Package: debian-installer Severity: important Entries in the generated fstab are sorted by device name. They should be sorted by mount point name. For example, if you have /usr on /dev/sdb1 and /usr/local on /dev/sda3 (which was my case), in the generated fstab, /usr/local will be listed before /usr. In such a case, /usr/local will be mounted before /usr, which is something we absolutely do not want to happen.