In order to remove a software RAID you can issue the following commands in the Rescue System:
mdadm --remove /dev/md0
mdadm --remove /dev/md1
mdadm --remove /dev/md2
mdadm --stop /dev/md0
mdadm --stop /dev/md1
mdadm --stop /dev/md2
After that, the drive can be formatted normally again (e.g. with ext3):
mkfs.ext3 /dev/sda
mkfs.ext3 /dev/sdb
The result can be checked with:
fdisk -l
The software RAID should be gone.
Then installimage can be used in order to install a new operating system.
If an OS is installed and software RAID is activated on the server, then purely running installimage and installing a new OS without software RAID won't work. The server won't boot in this case. [/ol]复制代码