Oracle VM and some Linux operating system installations can fail on some disk partitions because libparted does not handle some disk partitions correctly.
Oracle Linux 5.7, 5.8, and 6.1
Red Hat Enterprise Linux (RHEL) 5.7, 5.8, and 6.1
Oracle VM 3.0 and 3.1
Releases 1.0 and later
Do the following:
Ensure that the disk on which the virtual machine software or operating system will be installed is clean, with no other operating systems installed.
If necessary, use the dd command to clear the disk before installing the operating system.