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Yeah yeah, we know you're special (lemmy.dbzer0.com)
submitted 9 months ago by 0x4E4F@lemmy.dbzer0.com to c/linuxmemes@lemmy.world
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[-] PsychedSy@sh.itjust.works 17 points 9 months ago

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

[-] taaz@biglemmowski.win 33 points 9 months ago

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

[-] Supermariofan67@programming.dev 10 points 9 months ago

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

[-] PsychedSy@sh.itjust.works 3 points 9 months ago

Ah. Makes sense.

[-] lea@feddit.de 29 points 9 months ago

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.

[-] PsychedSy@sh.itjust.works 10 points 9 months ago

I could have RTFM but you guys are more fun.

[-] 0x4E4F@lemmy.dbzer0.com 5 points 9 months ago

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

[-] PsychedSy@sh.itjust.works 2 points 9 months ago

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

[-] Hexarei@programming.dev 4 points 9 months ago

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

[-] MeanEYE@lemmy.world 6 points 9 months ago

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.

[-] PsychedSy@sh.itjust.works 1 points 9 months ago

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

this post was submitted on 15 Mar 2024
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