On Sat, Jun 25, 2016 at 08:33:31PM +0200, Helmut Jarausch wrote: > > So, I came up with root=UUID=uuid_number of the root file system. > > But to my surprise I now got a kernel panic > syncing: VFS: unable to mount root fs on unknown block(0,0) > > So, please tell me what I'm missing?
root=UUID lines are normally interpreted by the initramfs to find the right device to mount. If you don't use one, the kernel pretty much only supports root=/dev/<name> or root=PARTUUID identifiers (check kernel source file init/do_mounts.c:182,207 for details). You can find your PARTUUID using `blkid` or `lsblk -o +PARTUUID`.
