How to make bootable CDROM to format a raw disk?

Dears,

I really need to make a bootable CDROM that It formats a raw hard disk automatically.
I tried to use bootable Rescue disks but they attempt to mount a root partition on hard and with a raw hard they make an error and stop working.
I need a solution to do this by at most 10 MB on CD.
Please give me your detailed idea.
Best regards.

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