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Can a partition have a UUID without a filesystem?

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Partitions are identified by uuid on the newer gpt partition table (compare to msdos partition tables which do not have uuids). In Linux gpt partitions also show up in /dev/disk/by-partuuid.

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Can you clarify this a little bit? The answer is - YES, if it is a GPT partition, NO if not? – Nils May 8 '12 at 20:42
msdos partitions do not have uuids, gpt partitions do. Normally this doesn't matter though, because you just identify the partition you want by the uuid of its filesystem. – joeforker May 8 '12 at 20:59

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