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From: Alan <nuh-uh@nope.com>
Newsgroups: comp.sys.mac.system
Subject: Re: How do I check my SSD for damaged files?
Date: Mon, 11 Nov 2024 10:03:13 -0800
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On 2024-11-11 09:50, J Burns wrote:
> I used WIFI to migrate from an M1 Mac to an M4, both running OS 15.1. 
> Thunderbird still worked on the M1, but when I tried to launch it on the 
> M4, the system said it was damaged and should be discarded.
> 
> I downloaded and installed a replacement. Do files get corrupted in 
> migration? Is it possible that the App simply needed the install process 
> on the M4 to work on the M4?
> 
> I'm worried that somewhere an important word-processing, spreadsheet, 
> pdf, or jpg may be corrupted. If I next need it after 5 years, a good 
> copy may no longer be available. Time Machine disks don't last forever.
> 
> I want to know now if any files need replacement. Would Time Machine 
> detect bad files? Backups have gone smoothly.
> 
> How about Disk First Aid? Maybe I should run it on principle. It 
> suggests that I use Recovery because the computer will be unresponsive 
> for minutes or hours. I don't see the point of that advice. Won't my 
> computer also be unusable if booted in Recovery?
> 
> Do I need a third-party utility?

This is not actually about data corruption.

This is about either an extended attribute being set to "quarantine" the 
file.

Data files won't get this message, so you don't have to worry.