When I attach the transfer cable to the 120GB hardrive it only shows it as a usb drive with 16GB of space. I checked the hardrive on my computer and it shows 120GB of space, how do I get it to show as a hardrive on my xbox?

at the command prompt type chkdsk X: /f /r where X is pen drive.If it doesn't work download the recovery tool here http://freeware-fix.blogspot.com/2013/04/usb-drive-is-unreadable.html

Check to see if your 120GB is Actually a 120GB, just slide it into a computer and see.

Broken USB device.

Solution here: http://vuorikoski.fi/lacie_usb.html

Tested and worked !

Yes, simply go to your settings and reformat it as a 120GB Hard-drive, the option should be there

Hello, verified if your hard disk is properly installed in the closure, don't forget to format your hard drive in NTFS. if your problem persist maybe need to check your USB connections in device manager.

If your computers are older and don't support USB 2.0 then you may be out of luck. Try it on a new computer.

Attach your harddrive to your computer via the cable that came with it.
Chances are it will be a USB connector.
Windows should recognise it and install the drivers automatically.
It will show up as a drive letter in 'My Computer'.

Plug it into a friend's computer (in the same cables as his main drive) (Turn the system off and pull the plug out first!) Tell us if it works there.

Data loss happens all the time for various reasons. That's why you need to learn how to use a CD burning program to transfer the pictures to CD's. If you don't want to burn often, get yourself a 16GB little flash drive at least.

goto Control Panel, administrative tools, Computer Management, Disk Management, If it pops up a new disk install wizard follow the directions in it. If not then find the new disk that has no partition on it, right click on that drive to create a partition, then right click on the drive to format it, if it hasent done so already.

I think you are using an 2.5" notebook hard disk drive into this external case which hasn't got an extra power supply.

Since you're using an USB1.1 connection this could be a USB1.1 issue, USB2 returns more power to the connected device, since you connected you harddrive too an USB1.1 port you might need an USB cable which you can plug into 2 USB ports.

By doing this one USB port will provide the power to spin the drive up (which needs a lot of power) and the other cable will be able to focus on the data transfer.

You can also check your disk manager, it could be the drive is requesting a drive letter that's aready in use by another device. Go to start -> right mouse click on My Computer -> manage -> storage -> disk management. If the device is within this list you might attach another drive letter to it by doing the following. Right mouse click on the disk -> Change drive letter and paths and there you change the current drive letter into another one.