David Hrbác wrote:
are those disks totally empty or there are some partitions? Try to look at them with fdisk. BTW sometimes Anaconda fails on disks with partitions. Deleting partitions helps before install, sometimes I have to "create a new empty DOS partition table" with fdisk
or my old standby, boot the centos cd to single user mode, and execute
dd if=/dev/zero of=/dev/sda bs=1024 count=1024
this zeros the first megabyte of the disk, wiping all traces of partition tables. power cycle to clear the state of -everything-, *then* boot the installer...