Hi,

i have set up an md (raid1) device. it has two hard disks.

Something has gone bad on the disks, such
that whenever I do a raidstart or mkraid, it
says 
  raid set md0 not clean. starting background reconstr.. ..

what can I do to clean my md device.
I don't have any important data on my disks and don't mind even
reformatting both of them.. 

mkraid --really-force also is not helpful .
i have tried destroying both hard disk partitions using fdisk 
and doing a clean raid setup, still it starts the background
reconstruction.

also what is the command to do a low level format of the harddisk
in linux?

thank you for your help..

Regards,

Kartik Paramasivam

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