I have an external HDD partitioned into two. It was working fine on XP. After installing windows 7, it disappeared. I used HXD to fix the problem (by changing 42 to 07). After fixing i realised that one of the partition was still missing. when i checked Disk management, it was only one partition available but information is showing the total of the two partitions but labled with one partition. But when i access in my computer, it shows me details of one partition only. There is no sign of the second partition anywhere on the pc. The drive is 500gig and have been partition into 250 each. the are no OS on them.