HI I CONNECT TWO HDD ON SAME OS WINDOWS XP PROFESSIONAL . BOTH ARE DETECT BUT SECOND HDD HAS THREE DRIVE BUT IT SHOW ONE DRIVE. WHEN I TRY TO OPEN SECOND HDD DRIVE ITS GET THE ERROR DRIVE IS NOT FORMATTED FORMAT THE DRIVE. THANKS IN ADVANCE
More aboutdetect show drive
Get some Partition recovery program and some data recovery program if the former does not work, like GetDataBack.