[all variants] UUID and Grub

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http://ubuntuforums.org – Q1. In /boot/grub/grub there are many references to a UUID. Where does grub get this reference? I would like to change the source and then run update-grub. I prefer not to edit the grub file manually because then when I do run update-grub the UUID will come back. Q2. There are some obvious drawbacks to using UUID's in grub and fstab, but what are the advantages for a home desktop user? I can't think of any but there must be some. pgmer6809 (Hardware)