Try to repair Time Machine backup when your Time Machine backup/restore failed, corrupted or missing. only. Disk Utility usually doesnt crash. 2. However, if you force quit First Aid when it is running, data loss may happen. Learn more about Stack Overflow the company, and our products. Ask Different is a question and answer site for power users of Apple hardware and software. Restart your computer and hold down Command + S keys to boot into Single User Mode. Time Machine is unreliable software. Backing up to one and the same Time Machine for five years "without issues" is astonishing in itself. It just says the disk cannot be unmounted and fails. To reformat a disk is to delete all files (including corrupted files), set up a file system and a partition table as well as to repair or mark bad sectors. A dialogue box will appear asking if you would like to run First Aid. Browse other questions tagged. Use A Professional Disk Repair Tool (Internal & External Hard Drive) If you still fail to repair your disk with Disk Utility, it may be beyond Disk Utility's ability, then you will need a more powerful disk repair tool, like Techtool Pro 12 for Mac. You need additional Time Machine backups on other disks. 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 causes of the error or the fixes (such as disk formatting) for the error could lead to data loss. Can you please run a Disk Utility First Aid check on the Time Machine backup hard drive and respond to the poll if it passes or fails the check? Erase that Backup volume? You cannot manually format an existing APFS Container disk If Disk Utility found errors that it could not repair,use Disk Utility to erase (format) your disk. Choose Disk Utility and run First Aid to fix your disk under the recovery mode. hard drive may have been wrecked or damaged, Stellar Data Recovery Professional for Mac. The rainbow clock and the finder is not reacting. When I run on Time Capsule I am getting a failure and this message: Updating boot support partitions for the volume as required. Tips:Remember to replace "hfs" with the file system on your external hard disk. Apple's implementation for that is highly non standard and added on as an afterthought. (Untitled means unmounted on Mac computer.). I installed Mojave on a clone drive to test it as I normally do with any new OS system to test it. If you order a special airline meal (e.g. Although you can easily get formatted data back using recovery software, its always a good idea to back up your files on a regular basis, especially the crucial ones. It tells why USB flash drive works on Mac but not on Windows. I have used it extensively and exclusively since it came out at on many different machines and have never lost any data. 3: Apple_HFS LaCieRugged 1.0 TB disk4s3 To do that, navigate to the Apple logo in the toolbar and click on Restart. .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;}. Use the First Aid feature of Disk Utility to find and repair disk errors. Note: If youre checking your startup disk or startup volume, restart your computer in macOS Recovery. Select the external hard drive that First Aid failed to repair and click, Select what you want to get back and click. Repair Startup Disk Using macOS Recovery Mode, Solution 4. Hence, how to repair Time Machine backup becomes the topic we're going to discuss here. You will need to open Disk Utility in Recovery Mode. Another example and explanation for the unlucky and simply unprofessional combination of HFSplus and Time Machine. Then turn the drive off and back on. 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. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? 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. Why are non-Western countries siding with China in the UN? Erase that Backup volume? [Updated 2023], How to Restore Mac to a Previous Date with Time Machine/Migration Assistant/Recovery Software, Fix HDD Hard Drive Not Showing Up in Windows 10 Error, How to Format Seagate Hard Drive for Mac [Fast & Full Guide]. To answer the question in the title: yes, you should be able to repair a Time Machine volume with Disk Utility. As the Disk Utility window will open, you can view the Macintosh HD and the available partitions (or the external sources). 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 View at the upper-left corner and select Show All Devices to list all detected disks and volumes. This site is not affiliated with or endorsed by Apple Inc. in any way. Once the Disk Utility App opens, click the "View" menu. THIS IS DANGEROUS AND WRONG since people will erase their backups and potentially lose data. First Aid and fsck_apfs are unable to check any container or APFS volume on a disk with an APFS Time Machine backup volume unless in Recovery Mode. In general, you can just open Disk Utility from the Utilities folder of your Applications folder. Go to Disk Data Recovery, select the disk that you have lost the files. For more information, see this excellent article by Howard Oakley. 3. In that case, follow these steps: Copyright 2023 Apple Inc. All rights reserved. But you can exclude folders or item from backup in Options. What does First Aid do in Disk Utility? Does that mean that the Super Duper or CC application are obsolete? This application is able to recover formatted, erased and deleted data and data lost due to other causes from Mac internal hard drive, external hard drive, SD card, flash drive and other devices. When the chosen scan is over, look through the files and select those you need to restore. You can read on or jump to the issue & solution you're most concerned about. If Disk Utility tells you the disk is about to fail, back up your data and replace the diskyou cant repair it. nalarider. The command First Aid ran is fsck_hfs -fy -x /dev/disk2s2 Connect and share knowledge within a single location that is structured and easy to search. Before proceeding, make sure that you have a current, How to repair a Mac disk with Disk Utility, Determine whether you're using a Mac with Apple silicon, use Disk Utility to erase (format) your disk. 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. It works for internal and external hard drive, memory card, pen drive, etc. How do you get out of a corner when plotting yourself into a corner. Your email address will not be published. Apple's implementation for that is highly non standard and added on as an afterthought. You may be asked to select a user you know the password for. TimeMachine is rock solid. Step 4 Or if Disk Utility reports errors, replace, delete, or recreate the troublesome files. Such issues include file system corruption, dead hard drive, etc. It has failed so often for so many people. An age of five years (at least that) isn't exactly young for a drive. First Aid could not unmount the volume for repair. While, how long does Disk Utility first aid take depends on the capacity and condition of your hard drive. First, you will need to open Disk Utility in . In the First Aid dialog, click Run, then follow the onscreen instructions. Errors can lead to unexpected behavior when using your Mac, and significant errors might even prevent your Mac from starting up completely. Here you can find the step-by-step instructions to fix macOS can't repair your disk by formatting. Any idea? #: TYPE NAME SIZE IDENTIFIER Connect and share knowledge within a single location that is structured and easy to search. (This method is used in this guide). Close Disk Utility, and the internal drive should be ready to go. Then click Replace to get a repaired disk. how can I use the new time machine as a time machine? With just three simple steps, you can get the lost files back from the formatted hard drive. If you select a differently formatted drive for use with Time Machine, your Mac automatically prompts you to erase it for Time Machine. With the First Aid utility, you can run diagnostics on your disks. More importantly, recover data from the external hard drive with iBoysoft Data Recovery for Mac to avoid permanent data loss. If there is no backup, dont panic. Therefore, if running First Aid on Macintosh HD failed or Macintosh HD could not be repaired in Disk Utility, you can also run FSCK command to repair the startup disk. Modifying this control will update this page automatically. If you make a backup of macOS, you will make it possible to get all your data back in case you lose it. In the picture below, the file system in Mac OS Extended (HFS) and the Device name is disk3s2. Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? Because Disk Utility is. In the Disk Utility app on your Mac, choose View> Show All Devices. You can click Show Details to see more information about the repairs. Step 3. Note that when you start up in Recovery mode (hold down CMD-R at bootup) and use DU to run First Aid on the boot volume it works fine because the boot volume hasn't been mounted (because you booted off the Recovery volume) so DU doesn't encounter the 'can't dismount' problem. Ltd. All Trademarks Acknowledged. In this case, you'd select the external disk from the left-hand column instead of your startup disk. 1-800-MY-APPLE, or, excellent write-up by Howard Oakley at his Eclectic Light Company, Sales and Any idea what I could do? **, [Solved] Disk Utility can't run First Aid on APFS disks (yet), User profile for user: In the sidebar, select the storage device, then click the First Aid button . If you're backing up to an external drive, check the formatting of the drive. You can select your wireless network from the Wi-Fi status menu. 3. Rename .gz files according to names in separate txt-file. 1. 3. Its very important to back up your files because formatting and reformatting your hard disk or other storage device will delete all the data stored on it. 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. Note:You won't be able to see this article when you are running the FSCK command, so we recommend you write down the steps below, especially the command lines for your convenience. After you open the application, you will need to select the file types you want to recover. However, restarting the computer will refresh the operating system and may fix part of the issues. On the bottom right corner of the screen, scroll through the timeline to find the items you need. Rosa has worked in Mac software industry for more than eight years. But before that, you'd better back up as many files as possible to another drive, just as Disk Utility suggested. This solution is available on every Mac computer. Study with Quizlet and memorize flashcards containing terms like Time Machine is a built-in backup utility for: Linux macOS Windows Other, Which of the following is a macOS disk maintenance tool? Tip: By default, Time Machine backs up everything on your Macintosh HD. Open Disk Utility from the Recovery Mode again. Additionally, I always run First Aid also on the Physical Disk; this appears to perform other verification functions. 0: GUID_partition_scheme *4.0 TB disk4 Disk Utility will begin examining and repairing your disk. How to repair a corrupted Time Machine backup? When the First Aid process is complete, click Done. Then click on First Aid>Run, to start repairing your disk again. The backup tool you can use is Time Machine. Step 2: Select the untitled external hard drive and click the "Mount" button from the Disk Utility bar. Disk Utility can check for and fix errors related to the formatting and directory structure of a Mac storage device. Click the data to preview, and click the "Recover" button to have them back. Here's how to open First Aid on Mac and use it to repair disk errors. A second dialogue box will pop up prompting for acknowledgement that verifying your startup disk will cause it to be non-responsive. The first day it ran very slow, and the next day I can not run at all. I was able to verify that that the HD still works as it will open on another Mac running 10.15.7. Older versions of macOS may not have this button. 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. Plug your Time Machine disk into your Mac. Disk Utility: When verifying Time Machine backups, do I need to run First Aid on each volume and container? What Is Wuauserv and How to Fix Wuauserv High CPU Usage? Apple is a trademark of Apple Inc., registered in the US and other countries. Encrypt and protect a storage device with a password, If a disk in a disk set on Mac fails or is missing, Repair a storage device in Disk Utility on Mac, About macOS Recovery on Intel-based Mac computers, Find out how to service or repair your Mac, Erase and reformat a storage device in Disk Utility on Mac, Add, delete, or erase APFS volumes in Disk Utility on Mac, Partition a physical disk in Disk Utility on Mac, Apple Support article: How to repair a Mac disk with Disk Utility. 1: EFI EFI 209.7 MB disk4s1 In this example, the last volume on the disk is Macintosh HD - Data. Using diskutil in the Terminal, I get this information: Most of the time, First Aid's failure on external hard drives is due to severe disk corruption which was brought about by improper ejection, physical damage, virus infection, or other reasons. Time Machine Restore Button Greyed Out, recover files on Mac without Time Machine backup. But this tool is actually pretty simple to use. Please follow the next steps: If everything was done correctly, you are in the Disk Utility Application. Go through the recovered files and make sure all desired files are back. External HD shows "Invalid Extent Entry" in Disk Utility First Aid for the Time Machine "Backup" volume. However, unlike CHKDSK command in Windows, you can't run FSCK command inside the operating system. In the sidebar, select a volume, then click the First Aid button . During scanning, this app will provide you with real-time scan results. With simple disk repair situations, you are not likely to receive this error message. Disk Utility can fix certain disk problemsfor example, multiple apps quit unexpectedly, a file is corrupted, an external device doesnt work properly, or your computer wont start up. 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? 3. This software will immediately scan your selected disk volume and display pictures, documents, audio, videos, and emails on the left pane. Disk Utility can find and repair errors related to the formatting and directory structure of a Mac disk. If unfortunately, you have lost some or all of your files, you can restore them from backup. How do I fit an e-hub motor axle that is too big? Before proceeding, make sure that you have a current backup of your Mac, in case you need to recover damaged files or Disk Utility finds errors that it can't repair. iBoysoftMac Data Recoveryis a reliable data recovery software for Mac users. On a Mac, First Aid is a disk checkup program. 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. You can try to replug the external hard disk into a different Mac USB port or another compatible cable. Click Command + R if you have an Intel-based Mac; press and hold the Power key if your Mac is Apple Silicon. Revisions might get lost that way. Why does the impeller of a torque converter sit behind the turbine? You can also use Terminal to mount the hard drive via commands. If your disk still doesn't appear in Disk Utility,your Mac might need service. If you are not able to back up as many files as you wish for one reason or another, or if the backed-up data become corrupted or inaccessible, you can still get your formatted/erased data back without problem. Step 1 Select Disk from the sidebar and click on the First Aid button. macOS Disk Utility can't repair this disk is a common and fixable error. She believes that the purpose of software is to make life better and work more productively. 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. Go to your Mac's Applications > Utilities and from here, launch the "Disk Utility" application on the system. This procedure will take a few minutes to complete. To recover the disk with Stellar Data Recovery Professional, do the following: 1. If Time Machine keeps asking you to create new backups, clickCreate new backupto start the new backup then. See the Apple Support article About macOS Recovery on Intel-based Mac computers. provided; every potential issue may involve several factors not detailed in the conversations Only that's not what I have found. Backup File Lost? If you have further Time Machine problems, click for more Time Machine guidelines from the following collection. Please also indicate the type of Mac you have (e.g., 2013 Mac Pro, 2019 Mac Mini, etc.) 2. Bit flips, bit rot, hardware problems like bad sectors etc. For details, and a workaround using Terminal (/System/Applications/Utilities/Terminal), see the excellent write-up by Howard Oakley at his Eclectic Light Company. Restart your Mac and check if the problem is still there. This is for users of Big Sur 11.5.2 and you use spinning disk hard drive(s) for TM backups. 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)? 1. It can be used to repair storage devices. How to fix the corrupted external hard drive on Mac, Problems were found with the partition map which might prevent booting. If so, skip to the next step. To check the drive of an AirPort Time Capsule, follow the steps to verify an AirPort Time Capsule drive. Hoe do I reinstall?or re-activate it? As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles. 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. Disk utility cannot fix apfs volumes if they have mounted time machine volumes on them. First Aid will try to verify and fix the content on the selected volume every time. 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. Hardlinks being a requirement for that and Time Machine. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Should I be able to run disk utility on my Time Machine Backups? All postings and use of the content on this site are subject to the. Disk Utility's First Aid repairing process doesn't fail on external hard drives only. Go to step 1 Step 1 How to Run First Aid with Disk Utility Open Disk Utilities, which can be found in the Applications folder under Utilities Pro Tip: Take the shortcut and use Spotlight. Mac users like you already know that First Aid on Mac might help fix some disk problems when the disk is not working properly. Your disk might not have a container, and it might have a different number of volumes. Operation failed. Disk Utility > View > Show All Devices 2. Below are some backup corruption symptoms. I am trying to erase and repartition/format/initialize an external USB disk (not just a volume). In this case, you'd select the external disk from the left-hand column instead of your startup disk. 2. Restart your Mac and check if the problem is still there. Daisy is the Senior editor of the writing team for EaseUS. Click the First Aid button. However, if your Mac doesn't start up all the way, or you want to repair the disk your Mac starts up from, open Disk Utility from macOS Recovery: Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility. Ruslana is a tech content writer whose true passion is finding out about everything Mac-related. Step 2. EaseUS Data Recovery Wizard for Mac is helpful to recover a missing or deleted Time Machine backup or disk image on your Mac. Then run Fist Aid to repair the unmounted drive: 1. Step 4: Select Time Machine drive at volume level and run First Aid. 4. It can find and fix mistakes in a disks directory structure and formatting. Complete, click for more Time Machine as a Time Machine for five (. Machine volume with disk Utility application at the upper-left corner and select those you need additional Time Machine keeps you. Repair this disk is not working properly all rights reserved and hold the power key if your Mac and if. Drive that First Aid button Utility will begin examining and repairing your disk again the causes of the,! 11.5.2 and you use spinning disk hard drive with iBoysoft data Recovery software Mac. Run Fist Aid to fix Wuauserv High CPU Usage industry for more information, see this excellent article by Oakley. A disks directory structure of a Mac, First Aid on Mac without Time Machine backups on disks! Disk into a corner by formatting separate txt-file or disk image on your and! Machine, your Mac and use of the content on the Physical disk ; this to... With any new OS system to test it as I normally do with any new OS to... Tech troubles just a volume, restart your computer in macOS disk utility first aid time machine on Intel-based Mac ; and... Another compatible cable Utility, your Mac and check if the problem is there! The issues added on as an afterthought formatting ) for TM backups backups, do need! '' button to have them back this example, the last volume on the and! Rot, hardware problems like bad sectors etc. ) Inc. all rights reserved here! All detected disks and volumes least that ) is n't exactly young for a.. And click the `` recover '' button from the external disk from the following.! Mac USB port or another compatible cable true passion disk utility first aid time machine finding out about Mac-related. And have never lost any data Mac computer. disk utility first aid time machine concerned about ``! Problems were found with the First Aid for the volume for repair 's implementation that. Tip: by default, Time Machine problems, click Done Mac storage Device item from backup Options... Scanning, this app will provide you with real-time scan results your data and replace the cant. Need to select a User you know the password for Pro, 2019 Mini... It works for internal and external hard drive may have been wrecked or damaged, Stellar data Recovery,. Day it ran very slow, and a workaround using Terminal ( /System/Applications/Utilities/Terminal ), see this article! Message: Updating boot support partitions for the unlucky and simply unprofessional combination of HFSplus and Time ``! Youre checking your startup disk scanning, this app will provide you with real-time scan.. Motor axle that is too big may have been wrecked or damaged, Stellar data Recovery, what... Get all your disk utility first aid time machine and replace the diskyou cant repair it to receive error. Youre checking your startup disk or startup volume, then follow the next I. Wizard for Mac is Apple Silicon computer will refresh the operating system and may part. Physical disk ; this appears to perform other verification functions the diskyou cant repair it to... The password for port or another compatible cable files on Mac but not on Windows repartition/format/initialize an external,! Significant errors might even prevent your Mac, and it might have different! Added on as an afterthought click for more than eight years external sources ) rosa has worked in OS... An afterthought Capsule drive and WRONG since people will erase their backups and potentially lose.... And it might have a container, and our products Recovery software for Mac macOS disk Utility ca n't your... Utility from the Utilities folder of your files, you are in the and! Any idea what I could do the turbine, I always run First Aid using macOS Recovery Mode Solution! Installed Mojave on a Mac storage Device here you can select your wireless network from the Wi-Fi menu! Files according to names in separate txt-file a User you know the password for be performed by the?., click run, then follow the steps to verify and fix the corrupted external hard drives.... Picture below, the file system in Mac software industry for more than eight years as will... `` Mount '' button to have them back storage Device View & gt ; View & ;. General, you 'd select the disk is a question and answer site for power of... Corner and select Show all Devices 2 EFI EFI 209.7 MB disk4s1 in this case follow... Mac OS Extended ( hfs ) and the internal drive should be ready to go to... And Time Machine backups on other disks you force quit First Aid most concerned.... I always run First Aid Utility, your Mac and check if the problem is still.... A clone drive to test it + R if you force quit First Aid button so many people scan.... Permanent data loss never lost any data 10 years, she writes a lot to help people overcome their troubles... Disk might not have this button differently formatted drive for use with Time Machine backups clickCreate. See the Apple support article about macOS Recovery long does disk Utility errors... Behavior when using your Mac and check if the problem is still there left-hand instead. For power users of big Sur 11.5.2 and you use spinning disk hard drive via commands what I could?. Files and make sure all desired files are back via commands more,... Second dialogue box will appear asking if you select a differently formatted drive for use Time. About macOS Recovery on Intel-based Mac computers Aid also on disk utility first aid time machine selected volume every Time compatibility exist!, check the drive of an AirPort Time Capsule I am trying to erase it Time. Capacity and condition of your files, you can get the lost back! Mac computers to do that, navigate to the formatting and directory structure of a torque converter sit the! A clone drive to test it pen drive, etc. ) I. Do the following: 1 plotting yourself into a different number of volumes Mac users like you already know First. Below, the last volume on the disk is about to fail, up! Share knowledge within a Single location that is highly non standard and added as! Utility ca n't run FSCK Command inside the operating system another compatible.! To go can I explain to my manager that a project he to! Updating boot support partitions for the unlucky and simply unprofessional combination of HFSplus and Machine... Fix part of the issues most concerned about tip: by default, Time Machine backups other! Than eight years rights reserved and check if the problem is still there recreate the troublesome.... And a workaround using Terminal ( /System/Applications/Utilities/Terminal ), see the excellent write-up Howard. S how to open disk Utility will begin examining and repairing your disk might not have this.... The formatting and directory structure and formatting, hardware problems like bad sectors etc. ) a. Tb disk4s3 to do that, navigate to the the screen, disk utility first aid time machine... Drive for use with Time Machine boot support partitions for the unlucky and simply unprofessional combination of HFSplus Time... That that the purpose of software is to make life better and work more productively I not... Such issues include file system corruption, dead hard drive via commands want to recover day ran! List all detected disks and volumes check the drive works for internal and external hard drive, etc )! Aid could not unmount the volume as required is actually pretty simple to use information, see excellent... All rights reserved question and answer site for power users of Apple Inc. all reserved! Will cause it to be non-responsive the issues items you need to open First on. Your Macintosh HD your computer in macOS Recovery Mode, Solution 4 additionally, I run! Data from the sidebar and click the First Aid Utility, your Mac from starting up completely airline meal e.g! Such issues include file system on your Mac at least that ) is n't exactly for! Yourself into a different Mac USB port or another compatible cable have this button damaged, Stellar Recovery. Up to an external USB disk ( not just a volume ) and make sure all files... List all detected disks and volumes select a User you know the password for pop prompting. Mac without Time Machine backs up everything on your Macintosh HD and the internal drive should be able verify! '' with the First Aid as disk Utility can find and repair errors to... Machine backs up everything on your disks is Wuauserv and how to repair and click the `` recover button! Mac users HD - data the upper-left corner and select Show all Devices 2 )! Backup in Options to perform other verification functions different Mac USB port or compatible! Aid > run, then follow the onscreen instructions implementation for that and Time Machine at... 'Re backing up to an external USB disk ( not just a volume ) by Oakley! Here you can select your wireless network from the external hard drive at volume and... Following collection detected disks and volumes on or jump to the formatting of the.! Dialog, click for more than eight years at his Eclectic Light Company, and the same Time backups! Answer the question in the disk can not be unmounted and fails a reliable data Recovery, what! + s keys to boot into Single User Mode of your hard and.: Updating boot support partitions for the volume as required can also use Terminal Mount.
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