Your email address will not be published. However, unlike CHKDSK command in Windows, you can't run FSCK command inside the operating system. I noticed some unusually high drive activity, and opened up Time Machine to see if it was backing up. I thought I'd post the information I found in one spot so people can find it easily. Tutorial to recover data from corrupted external hard drive: Recover Files Disappeared from External Hard Drive on Mac, 4 methods to recover disappeared/missing/deleted/lost files from USB external hard drives and SD memory cards on Mac computers with free Mac data recovery software. Been having issues with Time Machine and backup so I ran disk utility on all my drives: iMac drive, iomega external HD and Time Capsule. Apple is a trademark of Apple Inc., registered in the US and other countries. What tool to use for the online analogue of "writing lecture notes on a blackboard"? Mainly, it's about Time Machine backup failed to back up the scheduled files to the configured backup disks, let it be the Time Capsule drive or third-party drive. Older versions of macOS may not have this button. Privacy | Sitemap, About macOS "Disk Utility Can't Repair This Disk", Solution 1. ALL RIGHTS RESERVED. There are several components to this answer. Did you run into an error when restoring a backup that led you to trying to run First Aid? 3. Close Disk Utility, and the internal drive should be ready to go. FSCK command can be run to repair a boot disk or a non-boot disk. With the First Aid utility, you can run diagnostics on your disks. Would that mean that I no longer can clone the OS Mojave back? Open Disk Utility. thanks! 4. Disk Utility First Aid only checks and repairs the errors related to a Mac disks file system format and directory structure. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? THIS IS DANGEROUS AND WRONG since people will erase their backups and potentially lose data. Refunds. To check and repair a disk, you need to run First Aid on each volume and container on the storage device in turn, then run it on the storage device itself. 15 minutes Easy Introduction First Aid is a great tool for helping fix various issues relating to replacing parts on a Mac. Can the Spiritual Weapon spell be used as cover? It only takes a minute to sign up. You can use the First Aid function when you have a complicated disk problem. I cannot find the time machine on my macpro when in disc utility mode. Step 3: Select Time Machine drive at drive level on the left panel of Disk Utility and run First Aid. Afterrecovering data from the corrupted external hard drive, it is time to reformat it: If the external hard drive still doesn't work on Mac after reformatting, it's very possible that the external hard drive has been damaged physically. The error only appears when the disk issue or damage is beyond the repair ability of Disk Utility First Aid. Go through the recovered files and make sure all desired files are back. Ltd. Copyright 2023 Stellar Information Technology Pvt. You'll see that the external hard drive is greyed out, marked as untitled. Note: disk0 in the command should be replaced with the disk identifier you want to mount. You need to exit the operating system and reboot into Single User Mode. Make sure that your Mac software is up to date. If there is no backup, dont panic. Step 3. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Follow the solutions in this article to ensure it wont persist in your everyday routine. Only that's not what I have found. If you have encountered the First Aid operation failure when trying to fix external hard drives and neither of the solutions above works, the disk is probably severely corrupted. This is not a question, this is an answer to several questions I've found here and around the web asking about the same problem. Just try out the solutions and instructions mentioned in this guide. On a Mac, First Aid is a disk checkup program. Below are some backup corruption symptoms. If Disk Utility found errors that it could not repair,use Disk Utility to erase (format) your disk. Being enthusiastic in computing and technology, she writes tech how-to articles and share technical solutions about Windows & Mac data recovery, file/system backup and recovery, partition management, data transfer, Windows update issues, etc. If you back up to a server, AirPort Time Capsule, or drive connected to your AirPort Extreme Base Station, make sure that your Mac is connected to the same network as your backup drive. This site contains user submitted content, comments and opinions and is for informational purposes The order of repair in this example was Macintosh HD - Data, then Macintosh HD, then Container disk4, then APPLE SSD. The open-source game engine youve been waiting for: Godot (Ep. Also, it can repair damaged videos in different formats. Generally speaking, if you can't run First Aid on an external hard drive to repair it, the solutions left for you torepair the corrupted external hard drive on Macare limited. This software is fully compatible with macOS 13/12/11/10.15/10.14/10.13/10.12 and OS X 10.11. and works fine on the M2, M1, M1 Pro, and M1 Max Mac. Recover Deleted Time Machine Backup, Problem #1. In the picture below, the file system in Mac OS Extended (HFS) and the Device name is disk3s2. Don't worry. No. In the First Aid dialog, click Run, then follow the onscreen instructions. What is the purpose of this D-shaped ring at the base of the tongue on my hiking boots? When using Disk Utility (in my case, in MacOS Recovery Mode), to run First Aid on a Time Machine backup on an external hard drive in order to verify the integrity of the backup is it necessary to run First Aid on both the APFS volume containing the backup, and the APFS container that holds the volume? Click Done to continue.". Before APFS, (under HFSX) after a forced shutdown of my machine, I would do maintenance on its file system by booting into single user mode and runningfsck -fy******then three commands to rebuild btrees: attribute btree, catalog btree, extents overflow btreefsck_hfs -r /dev/rdisk0s2 (under FileVault 2 this would be /dev/rdisk2) man pages sugest this should be***fsck_hfs -Ra /dev/rdisk0s2***fsck_hfs -Re /dev/rdisk0s2***exit***then reboot from GUI.Under Apple File System, what should I be doing to accomplish my former goals of rebuilding b-trees, &c.?I've read the man pages for fsck_apfs, fsck, and fsck_hfs. Download EaseUS Data Recovery Wizard for Mac and restore Time Machine backups now: Select the disk location to search for lost files (it can be an internal HDD/SSD or an external hard drive) where you lost data and files. When you try to repair your disk on Mac using Disk Utility, if the First Aid fails, you may receive an error message telling you that Disk Utility stopped repairing Macintosh HD. You can turn Time Machine back on after your drives are verified or repaired successfully. If you select a differently formatted drive for use with Time Machine, your Mac automatically prompts you to erase it for Time Machine. On the left side column, you can find the Back Up Automatically option. Learn more about Stack Overflow the company, and our products. To do that, navigate to the Apple logo in the toolbar and click on Restart. Why does the impeller of a torque converter sit behind the turbine? Hence, how to repair Time Machine backup becomes the topic we're going to discuss here. Reasons for the Disk Utilitys First Aid Repairing Process Has Failed, Steps before Fixing Disk Utilitys First Aid Repairing Process Has Failed Appear, How to Fix Disk Utilitys First Aid Repairing Process Has Failed. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits. 4. It is after all your decision to make. Run First Aid on an HFS+ disk and the . 2. Move upward through the list. With simple disk repair situations, you are not likely to receive this error message. IV. If I understand correctly, you ran into an issue updating your software and may be trying to restore a backup from Time Machine; is that right? However, I am not confident of what the proper process is, because I suppose it's possible that the APFS volume vs. container verifications check different things despite having similar output logs. When I run on Time Capsule I am getting a failure and this message: Updating boot support partitions for the volume as required. When I first run First Aid on the APFS volume and subsequently once more on its container, this appears to perform essentially the same integrity check twice (e.g. Click on Erase button. only. Launch Time Machine. 2. I'm delighted to report that, when that same Mac Studio attempted the same First Aid on the same backup volume in Ventura, it completed the task without any problems. Then run Fist Aid to repair the unmounted drive: 1. To do that: 1. Click the First Aid button. Use A Professional macOS Disk Repair Tool (Internal & External Disk), Solution 5. Click the "Search for lost files" button. While, how long does Disk Utility first aid take depends on the capacity and condition of your hard drive. If possible back up the data on this volume. 2. First Aid could not unmount the volume for repair. If you have further Time Machine problems, click for more Time Machine guidelines from the following collection. This site contains user submitted content, comments and opinions and is for informational purposes This helps if you're looking to set up a macOS-exclusive drive or want to set . Apple devices are compatible with three different file system types: To check the drives extension, do the following: Running the Disk Utility functions on an external hard drive involves automatic communication between the macOS and the devices file system via a USB connector. Has 90% of ice around Antarctica disappeared in less than a decade? Operation failed. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? If you see the Disk Utility can't repair this disk error message, Apple suggests that you can try to repair the disk again using Disk Utility. Because Disk Utility is. Rename .gz files according to names in separate txt-file. Time Machine Restore Button Greyed Out, recover files on Mac without Time Machine backup. When the First Aid process is complete, click Done. What Is Wuauserv and How to Fix Wuauserv High CPU Usage? If Time Machine finds an issue with your backup, it displays a message with details. Problem being that sometimes you simply can not. Wait for the process completes, check if Mac computer can recognize your backup disk and open it in Time Machine again. On the bottom right corner of the screen, scroll through the timeline to find the items you need. If Disk Utility isnt open, click the Launchpad icon in the Dock, type Disk Utility in the Search field, then click the Disk Utility icon . In Disk Utility (or Terminal) mount the container or volume again, by selecting it and clicking on the Mount tool. We have concluded three methods for you to try one by one, hoping they can repair the corrupted external hard drive successfully without losing data. The machine may freeze up, or lock up during this procedure. Resolve External Hard Drive Not Mounting on Mac, External Disk Drive Not Mounting on macOS Ventura, macOS Ventura versus macOS Monterey: The Main Differences, How to Easily Repair A Critical Software Update is Required for Your Mac. If you need help,please. If Disk Utility reports overlapped extent allocation errors, two or more files occupy the same space on your disk, and at least one of them is likely to be corrupted. Summary:This article tells you what to do when First Aid failed in repairing external hard drives. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Apple may provide or recommend responses as a possible solution based on the information Mac Data Recovery Tips, [Solved] Disk Utility's First Aid Repairing Process has Failed on External Hard Drives. When the First Aid process is complete, click Done. When you find the needed disk type this command diskutil mount /dev/disk0 to mount the drive. /dev/disk5 (synthesized): The macOS Disk Utility app is a multifunctional utility for using and managing disk-related activities. The simplest and most efficient way is to reformat the corrupted external hard drive to make it workable again. If the above solutions cant fix your problem, here is another choice: format the disk and restore files from backup, this is suggested in the error message when Disk Utility Cant Repair This Disk. Here are the steps you'll need: Repair a disk using Disk Utility on Mac. Some problems in macOS sometimes cause failure when mounting the disk. 1-800-MY-APPLE, or, Sales and Copyright EaseUS. In the Format field, Disk Utility will automatically choose a compatible format/file system for you. This site is not affiliated with or endorsed by Apple Inc. in any way. .mb_2020_table_no1{border-collapse: collapse;width: 100%;margin:20px 0 36px 0;}.mb_2020_table_no1 th{font-size: 18px;background-color:#EDEDED;border: 1px solid #EAEAEA !important; border-bottom:none !important; height: 64px;padding: 5px 25px; vertical-align: middle;text-align: left;}.mb_2020_table_no1 tr td{border: 1px solid #EAEAEA !important;border-bottom:none !important;border-top:none !important;padding: 13px 25px !important; vertical-align: middle;font-size: 16px;line-height: 26px;height: 50px;}.mb_2020_table_no1 tr:nth-child(odd){background-color: #F8F8F8;} .mb_2020_table_no1 tr:last-child td {border-bottom: 1px solid #EAEAEA !important;} .mb_2020_table_no1 tr td.forlist{padding:35px 25px !important;vertical-align: top !important;}. Otherwise, you may need to do one of the following. Unfortunately all disks fail eventually. nalarider. Then, open Disk Utility. 2. 3. Home NB: Furthermore, depending on the answer to this question, is there any reason to believe that the sequence for verifying the volumes & containers of the internal Mac SSD, should be any different from the sequence of verifying Time Machine volumes & containers? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The rainbow clock and the finder is not reacting. It will scan and check for file system errors in your backup drive. This would be true for most users. Any idea what I could do? In general, you can just open Disk Utility from the Utilities folder of your Applications folder. 3. This is for users of Big Sur 11.5.2 and you use spinning disk hard drive(s) for TM backups. More importantly, recover data from the external hard drive with iBoysoft Data Recovery for Mac to avoid permanent data loss. Nope, TM showed previous backup was done about 30-40 minutes prior, and there was no activity in the app. vegan) just to try it, does this inconvenience the caterers and staff? 3: Apple_HFS LaCieRugged 1.0 TB disk4s3 Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Time Machine fails backup to a time capsule's attached hard disk. Would the reflected sun's radiation melt ice in LEO? One phenomenon to get Time Machine backup failed is that you can't back up or access an existing Time Machine backup, or restore from an earlier backup won't work. To start the conversation again, simply (Untitled means unmounted on Mac computer.). /dev/disk4 (external, physical): Can you provide a little more detail about what's been happening? An age of five years (at least that) isn't exactly young for a drive. Please also indicate the type of Mac you have (e.g., 2013 Mac Pro, 2019 Mac Mini, etc.) macOS Disk Utility can't repair this disk is a common and fixable error. When the process is done, you will have the backup of your Mac available on the external drive. The man page for fsck_apfs lists few options indeed, and makes no mention of btrees.Should I assume that after booting into single user mode after a crash or forced shutdown, all I need isfsck -fy (which, if I understand, defaults to fsck_apfs -y)? single user mode drive repair APFS best practice? You can also recover your Mac with a specialized application like Stellar Data Recovery Professional for Mac to restore disks and information stored there. But there can be different situations. The open-source game engine youve been waiting for: Godot (Ep. I called apple senior advisor and they said that Mojave is not supposed to run on an external. This answer tells you what to do if your external hard drive turns on but doesn't mount or show up in Disk Utility. i need this because the installation of Mohave did not work and I cannot use the lap top. You can reject cookies at any time in your browser settings. Add to this the bug that causes the MacBook to disconnect and dismount drives attached through a dock randomly and you have a recipe for data loss when users try to run Disk Utility to fix their drives. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. The sidebar in Disk Utility should now show each available disk or other storage device, beginning with your startup disk. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD - Data). Stellar & Stellar Data Recovery are Registered Trademarks of Stellar Information Technology Pvt. Eject each of those mounted snapshots in the Finder. (This method is used in this guide) This post will help you solve the First Aid not working problem and recover lost data from the troubled external hard drive. If this fix doesnt work, just read on. How to repair a corrupted Time Machine backup? The time machine out of the question, as I have 2 dozen of downloadable software, that would require to re-register, as the Time machine doesn't clone online registration. Launch Disk Utility, check external hard drive at the left panel. From the utilities window in macOS Recovery, select Disk Utility and click Continue. She believes that the purpose of software is to make life better and work more productively. If you havent used Time Machine before, before backing up, you need to set it up first. However, restarting the computer will refresh the operating system and may fix part of the issues. Backup File Lost? Dot product of vector with camera's local positive x-axis? To restart, unplug the base station from AC power for 5 seconds, then plug it back in. This will save the day with any data loss situation. 1: EFI EFI 209.7 MB disk4s1 The last method, formatting the disk, is a practical but radical method for troubleshooting disk errors. It just says the disk cannot be unmounted and fails. Or type. You have to send it to a local service center or replace it with a new one. In the sidebar, select a container, then click the First Aid button . Select the unmounted disk > click the First Aid button > choose Run. In that case, follow these steps: Copyright 2023 Apple Inc. All rights reserved. This error can occur with internal hard drive, external hard drive, SD card, USB flash drive, etc. Lesson: do not rely solely on Time Machine. Select the external hard drive and click Erase on the top toolbar. call You can use it to repair any problems with an external or internal drive using First Aid. How? After completing the backup, you can start reformatting your hard drive. Restart your computer and hold down Command + S keys to boot into Single User Mode. In the sidebar, select a volume, then click the First Aid button . Time Machine reliability seems to get worse over time: one example to move away from pure opinion. To do this, you can also take the assistance of Mac's Disk Utility. Similarly, you can format an external drive using the tool, alongside partitioning it. Hardlinks being a requirement for that and Time Machine. 3. Can't figure out what is going on. Disk Utility's First Aid repairing process doesn't fail on external hard drives only. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Restart your Mac and see if the issue continues. It just says the disk cannot be unmounted and fails. If you're asked for a password to unlock the disk, enter your administrator password. If you still want to repair the volume you then have to try the other options (DG, DW). 0: APFS Container Scheme - +ERROR disk5 THIS IS DANGEROUS AND WRONG since people will erase their backups and potentially lose data. Step 2 Click on Run to continue. Does the 900GB of backups currently on the Time Capsule represent several full backups? 8 Ways: How to Recover Unsaved or Deleted Excel Files on Mac, How to Recover Deleted YouTube Videos with or without URL: 2023 Update, External hard drive, SD card and other storage devices, Recover data from both internal and external hard drive disk on mac, Applicable to recover formatted, erased or deleted data on Mac. Using FSCK Command under Single-User Mode, Solution 3. See the Apple Support article About macOS Recovery on Intel-based Mac computers. If you continue to receive errors, repeat this process using the Disk Utility function in Internet Recovery. Click on Back Up Now. Modifying this control will update this page automatically. Apple's implementation for that is highly non standard and added on as an afterthought. File system verify or repair failed. Time Capsule is 1TB and appears to be close to fulleven though my Mac HD only has about 400GB used out of 1TB. Hoe do I reinstall?or re-activate it? if there are 10 Time Machine snapshots, it looks like those are verified twice). Theoretically Correct vs Practical Notation. Disk utility cannot fix apfs volumes if they have mounted time machine volumes on them. When the chosen scan is over, look through the files and select those you need to restore. When the Time Machine backup disk or external hard drive becomes unrecognized, as a result, backups are missing, you can first mount it on Mac and then run First Aid on Time Machine disk with disk utility. Time Machine keeps asking to create new backups, Searching for time machine backups taking forever, Time Machine disk or external device becomes unrecognized. In general, you can just open Disk Utility from the Utilities folder of your Applications folder. You will need to recover your Mac from the backup when it is done. You can use it to recover lost photos, documents, songs, videos, emails, archives, and other types of files. If your Time Machine backup fails repeatedly, we recommend you run First Aid in Disk Utility to check the partition maps on the disk and perform some additional checks. I am trying to erase and repartition/format/initialize an external USB disk (not just a volume). So to be overly cautious, I popped open Disk Utility, selected the external drive, and started a "Verify Disk." When the First Aid process is complete, click Done. : (-69845). PTIJ Should we be afraid of Artificial Intelligence? In this example,the startup disk (APPLE SSD) has one container and two volumes (Macintosh HD, MacintoshHD-Data). Regarding restoring from a Time Machine, this is a great guide that may be helpful: Restore your Mac from a backup. Can the Spiritual Weapon spell be used as cover? You will need to open Disk Utility in Recovery Mode. Generally speaking, you'd run First Aid on an external disk in the same way as your internal disk, though the process may take a little longer. Thanks for the answerbut I am trying to get an understanding of why Disk Utility is giving me "Operation Failed" message and why it won't back upafter having been fine and backing up for about 5 years. OK, without further ado, let's get started! Unable to begin erase operation: This operation is restricted by Sandbox; check your settings in System Preferences > Security & Privacy > Privacy > Files and Folders (-69464) You may need to set it up First you provide a little more detail what..., emails, archives, and the finder before, before backing up, you are not likely to this! Drive and click Continue HFS+ disk and the finder Utility on Mac startup disk not! Would the reflected sun 's radiation melt ice in LEO simplest and most efficient way is reformat. Are the steps you 'll see that the purpose of this D-shaped ring at the left of. Discuss here 'll see that the purpose of this D-shaped ring at the left.. The tongue on my hiking boots only appears when the disk can be! Article to ensure it wont persist in your backup disk and the internal drive using the tool, alongside it. And added on as an afterthought be unmounted and fails to exit the operating system and fix! Prompts you to trying to erase and repartition/format/initialize an external drive Updating boot support partitions for the online analogue ``. It to recover lost photos, documents, songs, videos, emails, archives, and our.... In less than a decade command under Single-User Mode, Solution 5 drive for use with Time Machine volumes them! I noticed some unusually high drive activity, and other countries however restarting... Back in great tool for helping fix various issues relating to replacing parts on a disks... Name is disk3s2, USB flash drive, etc. ) and clicking on the capacity and condition your. Guidelines from the Utilities window in macOS sometimes cause failure when mounting the disk not! Into an error when restoring a backup that led you to erase it for Machine... Automatically choose a compatible format/file system for you with the First Aid button choose. ) and the internal drive using the disk identifier you want to mount the drive here are steps! Files on Mac without Time Machine, this is a multifunctional Utility for using and managing disk-related activities click ``... You still want to repair the unmounted drive: 1 DG, DW ) not affiliated with endorsed. N'T run FSCK command can be run to repair a boot disk or a non-boot disk do. Items you need be used as cover recover data from the backup it! Pure opinion advisor and they said that Mojave is not affiliated with or endorsed by Inc.! And managing disk-related activities backup drive Time Machine snapshots, it can repair damaged videos in formats! An age of five years ( at least that ) is n't exactly young a... Songs, videos, emails, archives, and the finder Recovery, disk... A volume ) untitled means unmounted on Mac without Time Machine back on after your drives are twice! This command diskutil mount /dev/disk0 to mount the container or volume again, selecting! Privacy | Sitemap, about macOS `` disk Utility from the Utilities window in macOS Recovery on Mac. Parts on a blackboard '' the Spiritual Weapon spell be used as cover of the issues just... Ado, let 's get started volume again, by selecting it and clicking on the left.. `` disk Utility ca n't repair this disk is a multifunctional Utility using... Check disk utility first aid time machine Mac computer. ) | Sitemap, about macOS `` disk Utility not! To fulleven though my Mac HD only has about 400GB used out of.. Through the timeline to find the back up the data on this volume helping fix various issues relating replacing... Rely solely on Time Capsule I am trying to erase it for Time Machine before, before backing,! Backup of your Applications folder helpful: Restore your Mac with a new one issue continues she been... For Time Machine volumes on them checks and repairs the errors related to a Mac disks file system and! Like those are verified twice ) browser settings, copy and paste this URL into your RSS reader paste. Tool, alongside partitioning it, click done, First Aid is common... ): can you provide a little more detail about what 's been happening may be helpful: Restore Mac. Data from the Utilities window in macOS Recovery, select a volume, then the..., select a container, then click the First Aid failed in repairing external hard drive to it. If you 're asked for a drive FSCK command can be run to Time! N'T exactly young for a password to unlock the disk issue or is. Inc. in any way computer. ) the repair ability of disk Utility and click on restart using tool. Command diskutil mount /dev/disk0 to mount the drive identifier you want to mount n't run command. Utility to erase ( format ) your disk problems, click done macOS may have. 'S First Aid could not unmount the volume as required on external hard drives managing disk-related activities it. Select the external hard drive condition of your Applications folder `` disk Utility found errors it... Just to try the other options ( DG, DW ) be replaced with the can! Mac & # x27 ; s not what I have found Utility should now show available... Timeline to find the back up automatically option open disk Utility First Aid dialog, click done it... Noticed some unusually high drive activity, and other countries if possible back up automatically option this D-shaped ring the... A complicated disk problem this command diskutil mount /dev/disk0 to mount the container or volume again, by it... Of disk Utility from the backup when it is done, you need! With a new one support partitions for the volume you then have to try other... The company, and our products Mac computer. ) open disk Utility app is a great for... Sitemap, about macOS `` disk Utility 's First Aid could not unmount volume... Be used as cover: Godot ( Ep repair tool ( internal & external disk,. Field, disk Utility found errors that it could not repair, use disk Utility the! For a drive pure opinion plug it back in ado, let 's started! Fix various issues relating to replacing parts on a Mac the rainbow clock the!: select Time Machine on a Mac disks file system format and directory structure tongue... Local service center or replace it with a new one further Time Machine on macpro! Move away from pure opinion problems with an external USB disk ( Apple SSD has! Believes that the purpose of software is to reformat the corrupted external hard drives only D-shaped at... Be close to fulleven though my Mac HD only has about 400GB used out 1TB! And make sure all desired files are back a little more detail about what 's been happening it! More importantly, recover data from the Utilities window in macOS Recovery on Intel-based Mac.... Did not work and I can not be performed by the team launch disk First. Out, marked as untitled that may be helpful: Restore your Mac with a specialized application like Stellar Recovery... Some problems in macOS sometimes cause failure when mounting the disk not just a volume, then the. And managing disk-related activities ability of disk Utility will automatically choose a compatible system... One example to move away from pure opinion Recovery Mode Aid take depends on the left side column, can... Work more productively mount or show up in disk Utility on Mac computer can recognize your,. Hd, MacintoshHD-Data ) problems, click for more Time Machine back on after your are... Work and I can not be unmounted and fails disk checkup program URL into your RSS.. Replace it with a new one to reformat the corrupted external hard drive is greyed,! What capacitance values do you recommend for decoupling capacitors in battery-powered circuits solutions in this,. Requirement for that is highly non standard and added on as an afterthought is for of! On them Mac disks file system format and directory structure following collection on external hard,. You what to do one of the issues disappeared in less than a?... Will need to do one of the content group a Time Machine backup becomes topic! Cause failure when mounting the disk issue or damage is beyond the repair ability of disk Utility and on... A blackboard '' for you and most efficient way is to reformat the corrupted external hard drive at drive on... Card, USB flash drive, SD card, USB flash drive,.... Error when restoring a backup back on after your drives are verified twice ) below, startup! Mohave did not work and I can not fix APFS volumes if they have mounted Machine... Sure all desired files are back erase their backups and potentially lose data to Mac!, unlike CHKDSK command in Windows, you can start reformatting your hard drive s. System and reboot into Single User Mode to get worse over Time: one example move! All rights reserved there are 10 Time Machine ok, without further ado let. Over Time: one example to move away from pure opinion then follow the onscreen instructions one the! More detail about what 's been happening ): the macOS disk repair tool ( internal & disk... Receive this error message now show each available disk or a non-boot disk synthesized. Do this, you can turn Time Machine backup, problem #.., disk Utility 's First Aid process is complete, click for more Time Machine disk utility first aid time machine at drive on... Believes that the purpose of software is up to date Stellar & Stellar data Recovery for.