T o n g wrote: > I don't like using UUID, because, just as you said: > > "Warning: reformatting a partition normally changes the uuid, unless the > existing uuid is explicitly specified as an option when formatting. Thus, > commands such as mkfs (and its derivatives) and mkswap will normally > change the uuid, which in turn will change the udev-created symbolic link > in /dev/disk/by-uuid, which in turn may necessitate changes to /etc/ > lilo.conf. " If the system is reformatted then the uuid usually changes, true. But if the system is reformatted then you don't usually care because the entire world has changed. > Can I use something like root="ID=ata-IBM-DBCA-203240_HP0HPL43952"? I > remember nothing worked well, so I reverted to the (now troublesome) > "safe" /dev/sdXn. The ugliness of UUIDs is one of the things that makes using LVM look better. LVM uses UUIDs but keeps them internal so the user doesn't see them. $ cat /proc/cmdline root=/dev/mapper/vg0-root ro And in case your question wasn't answered here is an example using UUIDs for reference. $ cat /proc/cmdline root=UUID=aa136237-007c-94b1-a35e-080c409a800e ro Bob
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