Sometimes we find that after mounting another system’s hard disk, we can’t do any action with him by the mmc. This is because the HDD has been marked with a special protected partition named “GPT”.

This partitions are often created when the disks have been part of some RAID configuration. It’s like the signature and does not matter whether software RAID or hardware controller. The fact is that in order to reuse them we need to invoke the always dreaded CLI.

From here we’ll use the diskpart command. The new fdisk. The follwing steps will help us to ‘zeroize’ the head of the HDD.

Open the CLI:

Start -> Run -> cmd
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Now run:

C:\> diskpart
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we’ll see the prompt change:

DISKPART>
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now we need to know which hdd we want to clean. So:

DISKPART> list disk
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From the list, we choose the correct id:

DISKPART> select disk 1
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and clean it:

DISKPART> clean
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Once finished, we can use the disk from the mmc.