In standard NTFS is 512 bytes per sector. I understood the more the better, so I started to convert my XP partition to 8Kbytes per sector. First I checked drive for errors several times with chkdsk/f - it was fine. Secondly put PM8 to convert. Computer booted and started ... checked the disk - everything was fine did some 2 things more and then - error !!! Something stopped the conversion.Can't use the drive anymore.And the disk I think must be formatted. But is there any way I could recover the data ? To the same disk prefferably. Ontrack file recovery offers to copy everything over to another disk but at the moment it's impossible. Could please anyone help ?