You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Unrepairable Volume on Mac / Will updating to lastest OS fix issue or possibly crash system?

Volume /dev/rdisk3s2 was found to be corrupt and cannot be repaired


I tried in recovery mode and still gave me this. My question is I am on OS Monterey and if I go ahead and upgrade to Sequoia would that fix the issue or would it follow onto the new OS. Possibly create issues with the update? Or would I have to just reinstall Monterey?

MacBook Pro 16″, 12.7

Posted on Nov 14, 2024 3:30 PM

Reply
5 replies

Nov 15, 2024 6:32 AM in response to Shanman279

A macOS upgrade is not likely to fix an issue with an unrepairable volume, though I can't say it's impossible. But that volume doesn't appear to me to be one of a Mac's normal volumes but rather perhaps a Time Machine snapshot (though I could well be wrong, though my Monterey-running iMac lists no such volume). What problems are you having that has lead you to run Disk Utility?

Nov 15, 2024 8:24 AM in response to Shanman279

Yes, it's likely that you'll need to at least reformat the drive. Absent a hardware failure that's often the way (and the only way) to fix stubborn drive errors. If, however, your drive is formatted with Mac OS Extended, then Disk Warrior (not a free utility) might be able to fix it. If it's APFS, then there are no third-party utilities that can do repairs.


Regards.


Nov 15, 2024 8:13 AM in response to varjak paw

It's been hanging up and giving me an error that I have a corrupted volume and I need to reinstall operating system. It's been going on for about a month now. I did try to upgrade to Ventura and it would not get past about 2 minutes of installing. I might try to go back to a later date on my Time Machine and see if that works. If not, I guess will have to start from scratch.

Nov 15, 2024 7:28 PM in response to Shanman279

What are you doing that you are trying to access and/or getting error messages about a raw disk device?


You shouldn't normally be interacting with /dev/rdiskANYTHING unless you are dealing with direct memory mapped I/O and or bulk raw transfers to contiguous external storage (and even then, it's not a great idea regardless of people's opinions about the best way to use the dd tool).


/dev/rdisk devices are faster maps to a device, but /dev/disk is buffered and safer.

Unrepairable Volume on Mac / Will updating to lastest OS fix issue or possibly crash system?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.