Computer Hardware
You should never put floppy drives, hard drives, or even VCR tapes or cassette tapes on top of speakers (or near any other source of magnetism) because of:

EXE
RFI
EMI
IOU
FYI

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Computer Hardware
After displaying the directory of a floppy disk, a different floppy is inserted into the drive. The contents of the original floppy continue to display regardless of the director requests on the other floppies placed in the drive. You remove the drive in question and install it into your test system, and it does not exhibit the problem. You should next replace the:

Floppy drive ribbon cable
Original IDE controller
System's floppy drive device driver
None of these
System's power supply

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