Mac comes preinstalled with an inbuilt tool – Disk Utility, which can fix various disk issues. However, it doesn’t mean it is almighty. It can fail too. This article will teach you what to do if it fails.
As we all know, all our computer data is stored on the computer disk. Therefore, if the disk malfunctions, our data will be in danger, such as PST corruption, Word document damage, etc. Fortunately, Mac provides users an inbuilt disk repair tool, Disk Utility, similar to CHKDSK on Windows. In general, it is powerful enough to fix the most common disk issues. Nevertheless, it can fail too. When you use it to scan and fix the disk but you receive errors like “Disk Utility can’t repair this disk”, you can follow the steps below to take effective actions to avoid further issues.
1. Back up data right now
Now that Disk Utility is incapable of fixing the current disk issues, it means that these issues are actually quite serious. In this case, first of all, so as to avert data loss, you had better back up your data as soon as possible. On Mac, you can recur to Time Machine to do backup effectively.
2. Run “diskutil” Command on Terminal
Aside from Disk Utility, you have alternative means – run “diskutil” command that can diagnose and repair drive volumes as well. You can first access Terminal on your Mac. To diagnose disk, type “diskutil verifyVolume/[drive identifier]” and press “Return”. To repair disk, utilize another command – “diskutil repairvolume /[drive identifier]”.
3. Run FSCK in Single User Mode
Assuming “diskutil” fails too, you can use FSCK (file system consistency check) to have another try. This will make great effects if the disk is suffering file system related issues. First, reboot your Mac and enter single user mode during booting. After seeing a command prompt, input the “fsck – fy”. After it completes, rerun it. And finally reboot Mac in normal status and run diskutil to check if issues persist.
4. Reformat the drive & restore data backup
Provided that both “diskutill” and FSCK cannot help you get rid of the disk issues, your last resort is to reformat the disk. In most situations, disk formatting can be effective enough to deal with disk problems. But after formatting, you will need to restore data from scratch.
5. Resort to third party service
The worst situation must be that even reformatting disk cannot make any effects. In this scenario, your last resort is to seek assistance from third party disk repair services. You should always keep cautious and only trust in reputable ones.
Shirley Zhang is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including SQL Server fix and outlook repair software products. For more information visit www.datanumen.com