Extract files from one or several Akai MPC 2000 (v)floppy images.
For more context, read the accompanying blog post.
The Akai MPC 2000 has a custom scheme for supporting long file names (LFN) on FAT12 filesystems.
Its implementation is different from vFAT and uses the reserved space for each record entry in the root directory index.
As a result, mtools and mount are unable to get retrieve the long file names associated with each file.
From a physically mounted floppy:
$ sudo python main.py --src=/dev/fd0
From a floppy image file:
$ python main.py --src=~/Documents/floppy_1.img
Floppies #1, #7 and #13:
$ sudo python main.py --src=/dev/sdb --floppy 1,7,13
Floppies #1 to #99:
$ sudo python main.py --src=/dev/sdb --floppy 1-99
From a physically mounted floppy:
$ sudo python main.py --src=/dev/fd0 --dest=/tmp/out_mpc_floppy/ -v
From a floppy image file:
$ python main.py --src=~/Documents/floppy_1.img --dest=/tmp/out_mpc_floppy/ -v
Those apply to USB drives Gotek-formated.
Floppy #1 from physically mounted USB drive:
$ sudo python main.py --src=/dev/sdb --floppy 1 --dest=/tmp/out_mpc_floppy/ -v
Floppy #1 from a virtual floppy of an image dump of a Gotek-formated USB drive:
$ python main.py --src=~/Documents/gotek_all.img --floppy 1 --dest=/tmp/out_mpc_floppy/ -v
Floppies #1, #7 and #13:
$ sudo python main.py --src=/dev/sdb --floppy 1,7,13 --dest=/tmp/out_mpc_floppy/ -v
Floppies #10 to #20:
$ sudo python main.py --src=/dev/sdb --floppy 10-20 --dest=/tmp/out_mpc_floppy/ -v
Floppy:
$ sudo dd if=/dev/fd0 of=~/Documents/floppy_1.img
Virtual floppy on Gotek-formated USB drive:
$ FLOPPY_OFFSET=1
$ sudo dd if=/dev/sdb of=~/Documents/floppy_$FLOPPY_OFFSET.img skip=$((FLOPPY_OFFSET*1536*1024)) bs=512c count=$((1440*1024)) iflag=skip_bytes,count_bytes conv=noerror
Whole Gotek-formated USB drive:
$ sudo dd if=/dev/sdb of=~/Documents/gotek_all.img
The script requires kaitai python module to be installed.
$ sudo -H pip install kaitaistruct
This script uses the excellent kaitai binary parser to extract the fylesystem metadata (file names and position in binary image) and then uses native python file operation to extract each file.