Ubuntu
partman-base package

  1. Bug #569900
  2. Comment #18

Comment 18 for bug 569900

Revision history for this message
ceg (ceg) wrote : Re: mount: mounting /dev/md0 on /root/ failed: Invalid argument

If you did not re-format you may also see Bug #527401. (Other install issues in the comments also).

Generally, if your disks already have some preexisting superblocks on them (even though you deleted the partition) blkid, partman, mdadm etc. can get confused. When you recreate (similar) partitions they are redetected and md devices set up.