Emax

Sorry about the self-followup, but I remembered that I forgot something.

On Sat, Jan 31, 2004 at 10:04:31PM +0100, Oernvi wrote:
> - given you have the emaxos.emx file available, as it can be found in
>   the files section of this group, it can be written with the dd(1)
>   tool. Since the layout of parts of the OS is a bit complicated, I used
>   the following shell script:

I could add the following detail: the layout is a bit complicated since
the OS is devided in three parts and located on three different regions
of the disk. Technically it is not necessary to write those three parts,
it works just as well to capture an entire disk image via

	dd if=/dev/fd0u800 of=emaxos.emx

Then, anyone can re-create such a disk with

	dd if=emaxos.emx of=/dev/fd0u800

The advantage is that the dedicated shell script is not necessary. The
disadvantage is that the resulting file is larger (well, 800 Kilobyte
:). It compresses quite well, though, to about 150 KB.

It would also possible to store the data in a file with holes in it, but
that'd be less portable to other operating systems.

I'm curious about exploring reading and writing banks, because I really
hate typing file names in EMX under DOS blindly... hope I can share good
news soon :-)

Peter

PS. Formatting fresh disks with 'fdformat /dev/fd0u800' might still be
necessary, and is a Good Thing because it will verify the disk.


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