SSD corruption after Sequoia 15.3 install on 2019 iMac 5K i9

[JUMA55]

As I have done with every version of Sequoia, I booted from a USB drive, reformatted my internal 2TB SSD, installed 15.3 and restored my data via Time Machine. At that point running Disk Utility it reported no issues. But after a few days running Disk Utility showed problems.

If I run First Aid at the top, I get this:

Running First Aid on Container disk3, and similarly with Macintosh HD - Data, I get issues with some of the Time Machine Snapshots:

Then First Aid tells me the disk is corrupt and needs to be repaired, then I get Performing deferred repairs, skipped the repairs, need to clear bad flags and found orphans. Running First Aid again or later yields similar results.

If I reformat and restore, I get this same problem. Is it possible for an SSD to get physically corrupt or is a program on my iMac causing this and how do I figure out which one? Drive Dx shows no problems and 93%of lifetime left.

Thank you.

 

[Brian33]

If it were me, I'd boot into Recovery and use Disk Utility there to attempt the repair. In your screen shots, DU does seem to indicate that it can repair while booted from that startup volume, but maybe this is an edge case that needs to be done booted from a different volume.

Also, I've seen the advice to use DU Repair from the bottom up -- first on the volume(s), then on the container(s), and last on the top-level device. Oh -- Apple says this too: https://support.apple.com/en-us/102611

For each device that you're repairing, start by selecting the last volume on that device. In the example above, Macintosh HD - Data is the last volume....

(That page also suggests repairing from Recovery.)
Good luck!

 

[JUMA55]

If it were me, I'd boot into Recovery and use Disk Utility there to attempt the repair. In your screen shots, DU does seem to indicate that it can repair while booted from that startup volume, but maybe this is an edge case that needs to be done booted from a different volume.

Also, I've seen the advice to use DU Repair from the bottom up -- first on the volume(s), then on the container(s), and last on the top-level device. Oh -- Apple says this too: https://support.apple.com/en-us/102611



(That page also suggests repairing from Recovery.)
Good luck!

Thank you for the help. Let me back up a few things, and I'll try your suggestion and report back.

 

[JUMA55]

If it were me, I'd boot into Recovery and use Disk Utility there to attempt the repair. In your screen shots, DU does seem to indicate that it can repair while booted from that startup volume, but maybe this is an edge case that needs to be done booted from a different volume.

Also, I've seen the advice to use DU Repair from the bottom up -- first on the volume(s), then on the container(s), and last on the top-level device. Oh -- Apple says this too: https://support.apple.com/en-us/102611



(That page also suggests repairing from Recovery.)
Good luck!

I tried your advice and got the same results.

The folks on the Apple Support Communities say my corruption problem is likely a serious hardware issue somewhere.

Thank you all for the help. I guess it's time to trade this iMac in on a new one. I got nine years on my previous iMac, and I was hoping to get longer than five and one-half on this one. But apparently this is not to be. Rats!