Ask anyone who loves the Disk System...the FDS can be a bitch. It was never a very popular Famicom accessory for this very reason: There were too many errors!

Here is a quick list of the FDS error messages we all know and hate:

      Err. 01 = No disk card.

      Err. 02 = No disk power supply -- batteries and/or AC adaptor.

      Err. 03 = Disk card is write protected.

      Err. 04 = Disk card not authenticated (game maker ID).

      Err. 05 = Disk card not authenticated (game name ID).

      Err. 06 = Disk card not compatible (version ID).

      Err. 07 = Wrong side of disk card set in drive.

      Err. 08 = Disk card #1 wrong.

      Err. 09 = Disk card #2 wrong.

      Err. 10 = Disk card #3 wrong.

      Err. 20 = Screen data wrong.

      Err. 21 = Disk card header block (Nintendo-HVC) wrong.

      Err. 22 = Disk card header block #$01 unrecognized.

      Err. 23 = Disk card header block #$02 unrecognized.

      Err. 24 = Disk card header block #$03 unrecognized.

      Err. 25 = Disk card header block #$04 unrecognized.

      Err. 26 = Unable to write to disk card.

      Err. 27 = Block end mark seen but ends prematurely.

      Err. 28 = File ends prematurely during read.

      Err. 29 = File ends prematurely during write.

      Err. 30 = No space left on disk card (full).

      Err. 31 = File count in header and number of files on disk card do

                      not match.

      Err. 40 = Disk card is mess'd.