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Mac Os X Fusion Drive Recovery

bisatageo1975 2021. 5. 24. 18:09

Fusion Drive, a storage option on some iMac and Mac mini computers, combines a hard drive and flash storage in a single volume for improved performance and storage capacity. If your Fusion Drive appears as two drives instead of one in the Finder, it's no longer working as a Fusion Drive. This can happen after replacing either drive of your Fusion Drive or using software to intentionally split them into separate volumes.

  • Jul 18, 2016  Once you get the new drive in you need to get to Internet recovery and start Disk Utility like I showed in my earlier post and it will offer to remake the Fusion drive. After that you will no longer see those two drives to chose from, but only the one Fusion drive.
  • Nov 19, 2019  There are a couple of ways to get around the problem, so you can check and repair your Mac’s normal startup drive. The methods include starting up from your OS X Recovery HD volume, or another drive that contains OS X. (Please note: If you're checking a Fusion drive, you must start up with OS X 10.8.5 or later.
  • It also depends on which version of the OS you're using to make the fusion drive AND the age of the Mac you're running. I don't know exactly if it is only in Mavericks of if Mountain Lion already supported this in the latest updates, but after creating a Fusion Drive the second hard drive actually contains a recovery.

Sep 06, 2019  The simplest way to install macOS or OS X on a new hard drive is by using Internet Recovery Mode. This mode is only available on Apple computers made after 2009 that were running OS X Lion or later. If your Mac is from before 2009 or never had OS X.

You can continue using the two drives independently or follow these steps to regain the benefits of having the single logical volume of a Fusion Drive.

Before you begin

If you're not sure that your Mac was configured with a Fusion Drive, or that the drive has been split:

  1. Disconnect any external storage devices from your Mac.
  2. Choose Apple menu  > About This Mac, then click Storage.
    • If you see a drive labelled Fusion Drive, your Fusion Drive is working and this article doesn't apply to you.
    • If you have a Fusion Drive that has been split, you should see two drives. One of them should be labelled Flash Storage, with a capacity of 24GB, 32GB or 128GB. The other should be at least 1TB.

Use Terminal to create a Fusion Drive again

These steps permanently delete all data stored on the drives that make up your Fusion Drive. Make sure that you have a backup before continuing.

If you're using macOS Mojave or later

  1. Turn on your Mac, then immediately press and hold Command-R to start up from macOS Recovery. Release the keys when you see the Apple logo or spinning globe.
  2. When you see the macOS Utilities window, choose Utilities > Terminal from the menu bar.
  3. Type diskutil resetFusion in the Terminal window, then press Return.
  4. Type Yes (with a capital Y) when prompted, then press Return.
  5. When Terminal indicates that the operation was successful, quit Terminal to return to the macOS Utilities window.
  6. Choose Reinstall macOS, then follow the onscreen instructions to reinstall the Mac operating system. Your Mac restarts from your Fusion Drive when done.

If you're using macOS High Sierra or earlier

  1. Turn on your Mac, then immediately press and hold Command-R to start up from macOS Recovery. Release the keys you see the Apple logo or spinning globe.
  2. When you see the macOS Utilities window, choose Utilities > Terminal from the menu bar.
  3. Type diskutil list in the Terminal window, then press Return.
  4. Terminal displays a table of data about your drives. In the IDENTIFIER column, find the identifier for each of the two internal, physical drives that make up your Fusion Drive. Usually the identifiers are disk0 and disk1. One of them should be 128GB or less in size. The other at least 1TB in size.
  5. Type the following command, replacing identifier1 and identifier2 with the identifiers you found in the previous step. Then press Return.

    Example: diskutil cs create Macintosh HD disk0 disk1

  6. If you get a disk unmounting error, enter diskutil unmountDisk identifier, using the first identifier you gathered previously. Then enter same command again using the second identifier. Then retry the command in step 5.
  7. Type diskutil cs list, then press Return.
  8. Terminal displays additional data about your drives (volumes). Find the string of numbers that appears after ”Logical Volume Group” for the volume named Macintosh HD. It's a number like 8354AFC3-BF97-4589-A407-25453FD2815A.
    Example:
    +-- Logical Volume Group 8354AFC3-BF97-4589-A407-25453FD2815A
    |
    | Name: Macintosh HD
  9. Type the following command, replacing logicalvolumegroup with the number you found in the previous step. Then press Return.

    Example: diskutil cs createVolume 8354AFC3-BF97-4589-A407-25453FD2815A jhfs+ Macintosh HD 100%

  10. When Terminal indicates that the operation was successful, quit Terminal to return to the macOS Utilities window.
  11. Choose Reinstall macOS, then follow the onscreen instructions to reinstall the Mac operating system. Your Mac restarts from your Fusion Drive when done.

Jun 12, 2020 • Filed to: Solve Mac Problems • Proven solutions

Do you know that mini heart attack you get when your Mac crashes or would not start? It is the worst feeling in the world, especially if you have a lifetime worth of work stored inside your machine. What should you do in these situations? As you are probably have been advised many times, backing up your data regularly is a great practice. For Mac users, setting up an OS X Recovery Disk would be beneficial when trouble strikes. For example, it is conducive to Mac file recovery while you find data lost.

What Is an OS X Recovery Disk?

Mac

The OS X Recovery Disk is a native but hidden recovery volume on your Mac hard drive. This feature can be used to start up your machine and perform emergency maintenance services such as repairing a corrupted drive by running Disk Utility, surf the Internet to assess the problem you might be experiencing or download any necessary updates. You can also use the OS X Recovery Disk to reinstall your operating system and restore lost data from Time Machine backup.

Part 1 How to Restore Mac with Recovery Disk Mac

Now that you know that your machine has a built-in recovery tool, you may ask 'How to use OS X Recovery Disk?' The feature allows you to do the following options:

  • Use Time Machine backup to restore your Mac.
  • Reinstall Mac OS X with recovery disk.
  • Get help online or check your internet connection.
  • Use Disk Utility to verify and repair connected disks.
Related: You can also use Disk Utility to resize volume on Mac.

Here is how to repair Mac disk and recover Mac with OS X Recovery Disk:

  1. To put your Mac into Recovery Mode, restart your machine and hold down the 'Command + R' keys on your keyboard simultaneously. Continue to do this until the Apple logo appears.
  1. When your Mac has started up, the OS X Utilities window will appear and prompt you to choose one of the four options listed above. (Note: if you do not see this, but instead see a login page, you will need to restart your Mac and do the whole process again).
  1. Click 'Disk Utility' and choose the drive you want to repair on your Mac. Open the 'First Aid' tab. To check the problem your Mac has, click the 'Verify Disk' button. Click the 'Repair Disk' button to start fixing this button.

Part 2 How to Create an OS X Recovery Disk

Since OS X Mountain Lion, everything went digital and maintenance-minded. Mac users could no longer depend on physical recovery disks to help them fix any problems on their machines. But what how can you access this hidden partition if something goes wrong with your hard drive? You can always connect your machine online and initiate the OS X Internet Recovery feature, but realistically, you may not always have an internet connection. This method will also not work if you had upgraded an old Mac to run on a newer version of OS X.

In these situations, having your OS X Recovery Disk easily accessible on an external USB drive or SD card would be beneficial. It is really simple. Read on to learn how to create OS X Recovery Disk that you can easily access anywhere, anytime. Before you start, here are some of the things you need to adhere to:

  • To create an OS X Recovery Disk, make sure that your machine is at least running on OS X Lion or Mountain Lion and that there is an existing Recovery System on its startup volume. If you have a newer Mac, use Internet Recovery to get the system online.
  • An external USB drive or SD card with at least 1GB free space.

Once you have made sure both requirements are duldilled, follow the following steps to create an OS X recovery disk:

  1. Download the Recovery Disk Assistant from the Apple website if you do not have it already in your Applications/ Utilities folder.
  1. Wait until the download is complete and double-click on the file which should be named 'RecoveryDiskAssistant.dmg'. This will create the Recovery Disk Assistant.appfile - drag it into your Applications folder.
  1. Attach an external hard drive or USB stick and launch the Recovery Disk Assistant. Agree to the terms and conditions and wait until the software detects your external drive.
  2. Select the drive you want to use to create OS X Recovery Disk. Click 'Continue'. (Note: all data in the selected drive will be overwritten so that the wizard can install the needed data to make the external hard drive or USB stick into a recovery disk.)

It will take some time for the process to complete. When the software prompts you that it is done, click on the 'Quit' button. Eject the new recovery disk and keep it in a safe place. You will be able to use the disk when you need it the most. It is also a good idea to update this disk regularly.

Part 3 How to Recover Data on Mac Hard Drive

How do I recover files on my Mac for free?

If you just want to recover deleted or lost files from Mac hard drive, you can rely on a free data recovery program to help you do that. For example, Recoverit Free Mac Data Recovery. This file recovery freeware for Mac is dedicated in recovering data on Windows or Mac computer. If you want to retrieve data from an external device, like external disk or memory card, connect it to your computer and the stored data can also be recovered.

Recoverit - The Free Software for Mac OS Recovery

  • Recover documents, photos, videos, emails and more from Mac hard drive.
  • Recover 1000+ types and formats of files in different data loss situations.
  • Scan and preview the files before you recover them from all storage devices.

Video Tutorial on Windows and Mac Hard Drive Recovery

This free hard drive data recovery software is easy to use and user-friendly. Watch the video and you can get 3 simple steps to recover your data from hard drive.

3 Steps to Recover Files from Mac Hard Disk

Download Recoverit Free Data Recovery and take the next 3 steps to recover Mac hard drive data for free right away.

  1. Select the recovery disk

To recover data from a Mac hard disk, please select the hard drive where you want to restore Mac data. Click the 'Start' button to move forward.

Mac Os X Recovery Download

  1. Scan the Mac recovery disk

Recoverit Mac Disk Recovery will start an instant and all-around scan on the recovery disk. All the lost, inaccessible or deleted files on Mac will be shown gradually.

Os X Recovery Disc

  1. Preview and recover data

Os X Recovery Download

Once the scan ends, all the scanned files will be listed according to the file formats. You can preview the files, select the wanted ones and click 'Recover' to get them back.

Fusion Hard Drive Mac

Having a built-in recovery solution is great, especially when you tend to lose or misplaced recovery disks. It would be great to learn how to use it and have a copy of it stored outside the machine so that you will be able to access it when you cannot do it straight from your computer. Fail to do it? Only want to recover data? Recoverit can help you. Download it and recover lost files for free.

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