Repair a storage device in Disk Utility on Mac. Disk Utility can fix certain disk problems — for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have. Hey, so i've recently tried to update my OS using my 10.4 CD's. The installation ALWAYS fails during disk 2. Yesterday, somehow, I managed to open disk utilities and cancel the and delete the installation before (stupidly) starting another installation using the same original set of disks. If by 'PowerPC G4 (1.5)' you mean the Power Mac G4 Cube (5,1)-I cannot find a '1.5' in my Mactracker-then the highest system is OS 10.4.11. I would need more information on what computer it is, but I suspect you may be doom'd.
Disk Utility User Guide
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Disk Utility can fix certain disk problems — for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have.
Disk Repair Utility For Mac
Free Mac Disk Utility
If you run First Aid on a disk, Disk Utility checks the partition maps on the disk and performs some additional checks, and then checks each volume. If you run First Aid on a volume, Disk Utility verifies all the contents of that volume only.
- In the Disk Utility app on your Mac, choose View > Show All Devices.Note: If you’re checking your startup disk or startup volume, restart your computer in macOS Recovery, select Disk Utility in the macOS Utilities window, then click Continue. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD - Data).
- In the sidebar, select a disk or volume, then click the First Aid button .If Disk Utility tells you the disk is about to fail, back up your data and replace the disk — you can’t repair it. How to show the ruler on word for mac. Otherwise, continue to the next step.
- Click Run, then click Continue.If Disk Utility reports that the disk appears to be OK or has been repaired, you’ve finished. You can click Show Details to see more information about the repairs. Otherwise, you may need to do one of the following.
- 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. You need to check each file in the list of affected files. Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.
- If you can replace a file or recreate it, delete it.
- If it contains information you need, open it and examine its data to make sure it hasn’t been corrupted.
- If Disk Utility can’t repair your disk, or you receive a report that the First Aid process failed, try to repair the disk or partition again. If that doesn’t work, back up as much of your data as possible, reformat the disk, reinstall macOS, then restore your backed-up data.
If your Mac has a Fusion Drive and you see a flashing question mark or alert, see the troubleshooting section of the Apple Support article About Fusion Drive, a storage option for some Mac computers.
If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. For information about servicing your Mac, see Find out how to service or repair your Mac.
See alsoErase and reformat a storage device in Disk Utility on MacAdd, delete or erase APFS volumes in Disk Utility on MacPartition a physical disk in Disk Utility on Mac
Lost-in-Mac
New member
Hello all,
I am very new to the Mac world. That being said, my ancient ibook just had an update. once it rebooted i lost the top bar and no programs would open. I tried to reset the admin account using the procedure from this forum Change Mac admin password without the disk [Solved]. Now all i get is an attempt to boot( you can see the status bar) the a partial song , then the welcome screen flashes up the disappears, all while the pointer goes to the upper righthand coner. Then it repeats the song and flash. I do not have the OS cd. Any help would be appreciated.
Thank you in advance
I am very new to the Mac world. That being said, my ancient ibook just had an update. once it rebooted i lost the top bar and no programs would open. I tried to reset the admin account using the procedure from this forum Change Mac admin password without the disk [Solved]. Now all i get is an attempt to boot( you can see the status bar) the a partial song , then the welcome screen flashes up the disappears, all while the pointer goes to the upper righthand coner. Then it repeats the song and flash. I do not have the OS cd. Any help would be appreciated.
Thank you in advance