Re: How do I check my SSD for damaged files?

On 11/12/24 2:48 PM, Your Name wrote:

On 2024-11-12 16:00:38 +0000, J Burns said:

I did waste 65 seconds running First Aid. I think the warning that it could take hours was hogwash, as was the recommendation that running it from Recovery would help. Sequoia isn't compatible with any Mac before 2018, and I guess the biggest internal drive is 1 TB SSD. How could it take hours?

 Disk First Aid can't repair some potential problems when booting and running it from the same disk because it needs to unmount the drive. Starting up from the Recovery partition and using that copy of Disk First Aid allows the usual boot drive to be unmounted if needed.
 It shouldn't take "hours", especially on an SSD, but can take a while if you have lots and lots of files and/or a huge capacity drive.
 

Apple's message says running from Recover would avoid leaving the computer responsive for long.
"Verifying the startup volume will cause this computer to stop responding. This may last for several minutes to several hours. To avoid this, you can run First Aid while in Recovery."
I don't understand. Besides, the last time Disk First Aid took long for me, it was a mechanical drive with countless Time Machine backups.