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On Wednesday 15 Jan 2003 6:35 am, [EMAIL PROTECTED] wrote:
> Hi,
> I've been given some floppies which are apparently Amiga/Commodore.
> According to one www reference I found, it's easy
> to read them. You just
> dd if=/dev/fd0a of=myfile.adf
> and get 880k bytes of ADF.
[...]
> Another web site reckes I should try fdutils. I did, but
> the results suggest that I need non-PC hardware.
What hardware platform are you trying to read them on ?
The general concensus seems to be that it is very hard to persuade a PC floppy
drive to read an Amiga floppy disk. However, there is some software that make
it possible to do so from DOS if you have two 3.5" floppy drives.
See the website for it at:
http://www.oldskool.org/disk2fdi/
For information on other possibilities see:
http://cloanto.com/kb/3-118.html
Also see the FAQ on the Amiga floppy format that goes into excruciating detail
about the way data is layed out and encoded on an Amiga 3.5" at:
http://www.nondot.org/sabre/os/files/FileSystems/AFS_info.txt
My guess reading between the lines on all this implies that the people who
wrote DISK2FDI are using the fact that DOS doesn't try and interefere in
hardware access to prod the PC floppy controller into just raw reading the
floppy and pulling out the MFM encoded data from that.
Looking at my /dev/floppy directory (using devfs) I can see the following:
brw-rw---- 1 chris floppy 2, 0 Jan 1 1970 0
brw-rw---- 1 chris floppy 2, 84 Jan 1 1970 0u1040
brw-rw---- 1 chris floppy 2, 88 Jan 1 1970 0u1120
brw-rw---- 1 chris floppy 2, 28 Jan 1 1970 0u1440
brw-rw---- 1 chris floppy 2, 124 Jan 1 1970 0u1600
brw-rw---- 1 chris floppy 2, 44 Jan 1 1970 0u1680
brw-rw---- 1 chris floppy 2, 60 Jan 1 1970 0u1722
brw-rw---- 1 chris floppy 2, 76 Jan 1 1970 0u1743
brw-rw---- 1 chris floppy 2, 96 Jan 1 1970 0u1760
brw-rw---- 1 chris floppy 2, 116 Jan 1 1970 0u1840
brw-rw---- 1 chris floppy 2, 100 Jan 1 1970 0u1920
brw-rw---- 1 chris floppy 2, 12 Jan 1 1970 0u360
brw-rw---- 1 chris floppy 2, 16 Jan 1 1970 0u720
brw-rw---- 1 chris floppy 2, 120 Jan 1 1970 0u800
brw-rw---- 1 chris floppy 2, 52 Jan 1 1970 0u820
brw-rw---- 1 chris floppy 2, 68 Jan 1 1970 0u830
So no 880K option there. You could just try and read it using if=/dev/fd0 and
see what happens. :-)
Unfortunately I don't think I've got any Amiga floppy disks left anymore to
experiment with. :-(
good luck!
- --
Chris Samuel Wollongong, NSW
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