Web-N00b

Sometimes its a big problem to install OS on hdd’s after hardware raid. Because hdd contains RAID metadata and OS can’t be installed.

To remove RAID metadata, do following:

dd if=/dev/zero of=/dev/sda bs=512 count=20 – removing first 20 sectors of the drive

then check number of sectors via command fdisk -s /dev/sda

dd if=/dev/zero of=/dev/sda seek=(number_of_sectors – 20) bs=1k – removing last 20 sectors of the drive

or

dd if=/dev/zero of=/dev/sda seek=$(( $(fdisk -s /dev/sda) -20)) bs=1k

Do this on all drives with RAID metadata