I'm just trying to put together a quick OS X tool for managing the 2
gb SD card that I'm using with my new and spiffy Trinity interface —
I've been informed by Colin that the cards use the standard B-DOS
layout, identical to the Atom, but I can't seem to find any
documentation on that. Can anyone point me in the right direction?
My sole observations to date from directly inspecting the SD card (via
its /dev entry) is that disk images aren't track interleaved as DSK
files are, and seem to start on 512-byte boundaries as you'd expect
but not at any particularly obvious higher level boundaries. If I
search for filenames that I know to be on disks then I can locate,
extract and interleave DSK-style disk images by hand but that's not
exactly a brilliant solution. The hex editor I'm using can't find the
B-DOS record names anywhere (at least in ASCII format).
I apologise if this information is somewhere obvious, but right now I
really can't find it. There's a lot of stuff about accessing the
storage through B-DOS, but that's not really very helpful for this
problem.
Oddly, Sim Coupe refuses to treat the card as though it were an Atom
image (by setting /dev/[r]disk1s1 as the location of the Atom drive
image as per the docs and the particular /dev entry my SD card ends up
with). I'm not sure what to make of that at present.
- B-DOS hard disk layout? Thomas Harte
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