Don’t worry, you can use alternative methods to repair your Mac external hard drive in case Disk Utility doesn’t work. But sometimes, Disk Utility’s First Aid fails to repair your external hard drive and the drive’s data remains inaccessible. Recover Inaccessible Data Using Mac Data Recovery Softwareĭisk Utility is a useful storage drive management software that allows you to perform the external hard drive repair task with ease by using First Aid. Use FSCK Command in Single-User Mode to Fix External Driveģ. Use FSCK Command in Terminal to Repair External Hard DriveĢ. This will install the version of OS X you had installed.Summary: In this blog, we’ll share a variety of alternative methods to repair your Mac external hard drive in case Disk Utility fails to fix the drive.ĭownload the free-to-try Mac data recovery tool to recover data from an external hard drive.
Click on the Apply button, then wait for the Done button to activate and click on it.Set the Format type to Mac OS Extended (Journaled.).Click on the Erase icon in Disk Utility's main window.When Disk Utility loads select the volume (indented entry, usually Macintosh HD) from the Device list.Select Disk Utility from the Utility Menu and click on Continue button.Immediately at the chime hold down the Commandand Rkeys until the Apple logo appears. Do you want to change from APFS to HFS+? If so, then do this:
If you need to reformat the drive then do so using Disk Utility. They do not require reformatting the drive. Why do you need to do this? Is the drive not working as is? Those items in the second pic appear normally. I'm no expert at this so I am relating what I have learned from others. I hope I haven't made this too complicated. It appears as any normal HFS+ volume would appear except that it also contains the Physical Store of the APFS volume on disk5s6. The other is an HFS+ volume on the same SSD, disk5. These are part of the larger SSD that has been "partitioned" into two volumes. The actual physical store consists of slices 1 to 4. This is the typical arrangement for an APFS volume. This is not the same as the Recovery HD volume that is just under 521MBs. There is a 22GB partition that contains a bootable volume. The VM volume is 2.1GBs in which there are various of these snapshots.
The disk8s0 is the storage space of the container. This is one partition of an external 1TB SSD that happens to be used for startup. The above is from my startup volume which happens not to be disk0 but disk8 on my computer. APFS creates four volumes:Ġ: APFS Container Scheme - +199.6 GB disk8ġ: APFS Volume High Sierra Recovery 22.0 GB disk8s1 You do have 21 snapshots that are kept in your VM volume.
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