All I remember when I did this was that getting rid of GPT was tricky and fdisk/mbr using Win 95 boot disk didn't do it. CLEAN ALL seemed to do it faster than DBAN. Not sure I can be bothered to re-install Windows on a disk just to try it out again! Dave
I don't think entire disk cleanup is required to get rid of GPT. Filling with zeroes first few megabytes should be probably enough.
All I remember when I did this was that getting rid of GPT was tricky and fdisk/mbr using Win 95 boot disk didn't do it.
CLEAN ALL seemed to do it faster than DBAN. Not sure I can be bothered to re-install Windows on a disk just to try it out again! Dave