this post was submitted on 15 Mar 2024
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I use Arch btw

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Yeah yeah, we know you're special (lemmy.dbzer0.com)
submitted 7 months ago by [email protected] to c/[email protected]
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[–] [email protected] 17 points 7 months ago (3 children)

Are UUIDs built into the hardware, or something your computer decides on based on the drive's serial number and shit?

[–] [email protected] 33 points 7 months ago (2 children)

Uuids are part of the gpt (table) on the disk.

[–] Supermariofan67 10 points 7 months ago

You're thinking of partuuid, regular uuids are part of the filesystem and made at mkfs time

[–] [email protected] 3 points 7 months ago

Ah. Makes sense.

[–] [email protected] 28 points 7 months ago (1 children)

According to Arch Wiki they get generated and stored in the partition when it is formatted. So kinda like labels but automated and with (virtually) no collision risk.

[–] [email protected] 9 points 7 months ago (2 children)

I could have RTFM but you guys are more fun.

[–] Hexarei 4 points 7 months ago

It's fun to have people around who read the friendly manual

[–] [email protected] 4 points 7 months ago (1 children)

Yeah, you get the best Linux info when reading meme comments 😁.

[–] [email protected] 2 points 7 months ago

I tried a gentoo stage 2 or 3 like 20 years ago. I'm still good.

[–] [email protected] 6 points 7 months ago (1 children)

No. Since each partition gets its own UUID, it means it's generated by the OS on creation, no matter the number of partitions. On boot kernel will scan all UUIDs and then mount and map according to them, which is sightly less efficient method than naming block device directly, but far easier for humans and allows you to throw your drives to whichever port you like.

[–] [email protected] 1 points 7 months ago (1 children)

So if we swap drives about, the OS will see them as the same drive and/or partition?