I can't see that the installation of a Linux distro would truly corrupt a hard disk beyond repair.
Fdisking to remove the erroneous partitions, reinstating them again, and rebuilding filesystems on the partitions should bring the disk back to working order.
The latest "Red-Hat" version is now maintained by the Fedora team, who I believe have now released Core 2.
Head over to
http://fedora.redhat.com for links to the ISO mirrors.
Peace
ZB