Xbox 360 External Hard Drive 120GB GameStop Premium Refurbished
No, will not work get this one instead https://www.gamestop.com/video-games/xbox-360/accessories/memory/products/xbox-360-internal-hard-drive-250gb/10101886.html
0 way you can do this. Only way to access all of your progress is if you saved it to the cloud.
If it is a slim, you got the wrong one. If you have the fat one it is located on the left of the xbox horizontally.
Yes, and the install size is 6.9GB. If you choose not to install the whole game, the mandatory install is 3.7GB.
You can't. The 360 slim has a different type of hard drive with a different connector.
Yes, if they are saved to the hard drive.