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Does a CD-ROM drive also have a UUID like a hard drive? How do I determine what the UUID is?

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up vote 2 down vote accepted

No, they don't.

As this Ubuntu wiki says,

  1. all filesystems should be specified by UUID= or LABEL= for each partition.

  2. all physical devices should be specified by a symlink, like /dev/cdrom for a cd drive and /dev/disk/by-id/... for each physical hard drive.

To find the UUID of devices, run the following command:

sudo blkid
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