03-02-2009 12:56 PM
Does the drive appear in Windows Device Manager? If not, I would suspect a problem with your USB enclosure.
I have had problems with some USB-to-PATA kits, in that the drive would not detect when jumpered as Cable Select, but worked fine when jumpered as Master.
If it's visible in Device Manager, can you see it in Disk Management? Does it have partitions? Are they assigned drive letters that do not conflict with anything else?
03-04-2009 03:05 PM
Can you detect the USB enclosure's controller chip with the following Microsoft utility:
If so, then try connecting your drive to your motherboard. Ensure that the master/slave/cable select jumper is in the correct position.
03-05-2009 07:56 PM
Go to admin tools > computer management and select disk management, if it doesn't show up there then there's a number of reasons it could be, as said your usb housing could be faulty, it could be the firmware thing if it's an effected model, or it's not formatted properly so Windows can see it.
If it shows up in disk management as foreign or dynamic format it from there and next time you plug it in it should show up.
Does it have an O/S on it or is it blank?
Other things I can think of are is it soley USB or do you have it eSata connected also, if so you will probably need to go into the bios and select AHCI mode, or simply disconnect the eSata connector, this normally works also but will be slower transfering data. hth.