I get the same error that you have when I try to upgrade from centos 4.4 to 5. I haven't tried to a clean install yet. I did try a clean install on a VMWare machine and it gave me the same error.
Have completed two clean installs of CentOS 5 with no issues (other than permissions on ~/.ssh directory. One 32 bit system, one 64 bit. When I tried an upgrade from 4.4 on 64 bit system with two SATA drives in Raid 1 configuration, anaconda could not mount the root partition /dev/md1. The error message suggested it was because the partition was not formated which is obviously not correct.
Any thoughts appreciated. Thanks in advance.
B.J. McClure
CentOS 4.4, Linux 2.6.9-42.0.10.ELsmp x86_64 19:37:58 up 10 min, 2 users, load average: 0.10, 0.19, 0.14
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