Comment 44 for bug 569900

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Alex Kuretz (akuretz) wrote : Re: mount: mounting /dev/md0 on /root/ failed: Invalid argument

32-bit Ubuntu 10.04 for me. I performed the same install on 500GB drives that I had done successfully on the Dell 860 with 250GB drives last night, and it failed with the Invalid Argument message. As strange as it sounds, the 500GB drives is the only common denominator. I zeroed and ran mdadm ---zero-superblock on the drives prior to performing the install.