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Hi, I have a test system that booted fine using "Legacy Bios? mode and using the following Kickstart snippet configured the disks correctly:- # Clear the Master Boot Record zerombr # Partition clearing information clearpart --all --initlabel # Disk partitioning information part raid.01 --fstype="raid" --ondisk=sda --size=500 part raid.02 --fstype="raid" --grow

...a function in my kickstart file that I run from the %pre script when I specify a keyword in the boot parameters. You'll want to do something similar... Stop logical volumes if present. Wipe filesystems with wipefs, and then stop the RAID volumes. Finally, wipe the disk partition table. wipedisks() { vgchange -a n test -b /dev/md/efi && wipefs -a /dev/md/efi && mdadm --stop /dev/md/efi test -b /dev/md/boot && wipefs -a /dev/md/boot && mdadm --stop /dev/md/boot test -b /dev/md/primary && wipefs -a /dev/md/primary...

...ile that I run > from the %pre script when I specify a keyword in the boot parameters. > You'll want to do something similar... > > Stop logical volumes if present. Wipe filesystems with wipefs, and then > stop the RAID volumes. Finally, wipe the disk partition table. > > wipedisks() { > vgchange -a n > test -b /dev/md/efi && wipefs -a /dev/md/efi && mdadm --stop > /dev/md/efi > test -b /dev/md/boot && wipefs -a /dev/md/boot && mdadm --stop > /dev/md/boot > test -b /dev/md/primary &&amp...