WinXP NTFS formatted hard drive is "unallocated"
Howdy. I recently purchased a 500gb hard drive, hooked it up as the master (cable select on, plugged to end of IDE cable) drive on the secondary IDE channel of the motherboard then initialized and formatted it in WinXP SP2. Once this was done, the drive was recognized as "healthy, working" in WinXP and I copied around 50gb of saved files to it from my main 120gb (primary IDE of hard drive) drive. After the copying was finished, I double-checked that I had everything moved that I wanted and then shut down the computer. I then took the computer apart and rebuilt it using the same motherboard in a larger case with more air flow. I booted from the WinXP disk and deleted the partition on my old 120gb hard drive and reinstalled a fresh copy of WinXP. This worked well until Windows booted up and my 500gb drive was showing as "unallocated" in disk manager. Right-clicking on this disk in disk manager only gives me the "format/create partition" choice. The drive, as stated previously, was already formatted for WinXP with NTFS and has quite a bit of saved data on it, so I do not want to format it. Does anyone have any ideas as to where my data went to or how to get it back?
Thanks.