I have a Jtag Xbox 360 with the last Freeboot, and bought a 640 Toshiba 2.5" HDD.
I made this steps:
1. First I connected my original 20 GB HDD to PC and copied the contents of partition 3 (with Xporer360).
2. Then I plugged the new 640GB HDD (FAT32) to the 360 and formatted from the dash.
3. The Xbox360 formatted it without problems and appeared as the original but with the new size.
4. Finally I turned off the Xbox to connect it back to PC to copy the folders "content", etc ... and it's no longer detected.
The 360 does't detect it.
Windows does't detect it.
Linux does't detect it.
And the BIOS does't detect it.
Is there any way to fix the problem?