Put the drives in your PC and run the manufacturer's diagnostics on each one. You'll probably have to make a boot floppy to run the program from. Since you're running the program off a floppy it makes no difference what filesystem is on your hard drive.
Your dual drive Tivo will never boot if you remove one of the drives. It will always think there are supposed to be two drives installed and won't boot if it finds one missing.
You may be able to recover the recordings and copy everything over to a larger single drive. Check Hinsdale's How To for instructions or check out the mfslive.org website. Note that each one uses a different boot CD for their respective operations.
Your dual drive Tivo will never boot if you remove one of the drives. It will always think there are supposed to be two drives installed and won't boot if it finds one missing.
You may be able to recover the recordings and copy everything over to a larger single drive. Check Hinsdale's How To for instructions or check out the mfslive.org website. Note that each one uses a different boot CD for their respective operations.