Select Drive > Open > Harddrive or Memorycard
We are going to backup the Xbox 1 emulator so you will still be able to play Xbox 1 games on the 360.
To do this select Drive > Backup Partition 2 and save the backup.
If you want to backup your profiles, saves, arcade games, demos, dlc and videos you basically want to dump your Partition 3 > Content folder, I had to dump a few folders at the time because Xplorer 360 had random crashes for me.
Now shutdown windows, disconnect your original 360 drive and connect the hacked 250gb drive.
When windows has loaded up again load Xplorer 360 Extreme again, remembering to run it with administrator rights and select Drive > Restore Partition 2 and select the backup you made from your old 20gig drive.
It is important you just close Xplorer360 after that, massing about with anything else will corrupt Partition 3.
Now
Download Xplorer 360 250gb Edition, this works fine with Partition 3 on 250gig drives, however
trying to modify anything on partition 0 or 2 will just corrupt the drive!! Trust me save yourself some time and don’t do it.
Also don’t use Xplorer 250gig edition on any other sized drive either, it will just corrupt the drive.
If you do corrupt you drive just connect it to your Xbox 360 and format it.
After you have restored any content you can now shut your pc down and put the 250gig drive in your 360’s drive enclosure, it might be an idea to test everything is working correctly before re assembling the enclosure.
The hacked drive: