Hi,
If you have problems I suggest you to use the free Killdisk.
This software will format your hard disk to a factory state...
So you are sure nothing from other OS (as master boot sectors .. etc..) stay behind.
I used it (for a other reason ... very pesky virus infection ..) and this work great Just be sure to follow instruction how to make the Killdisk boot disk and how use it ...
Active@ Kill Disk Hard Drive Eraser. Low Level Format.