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FreeDOS on SBC188 (Announce)

posted by GizMo79, 12.09.2020, 22:06

> > then I inserted
> > floppy of freedos 1.2 and did sys c: from there ... the problem is
> > bootstrap from the floppies that load the kernel writing dots, it is
> > confirmed. While the floppies I boot write "FreeDOS Kernel -" They
> always
> > work. So can anyone explain the difference between the 2 different
> > bootloaders to me?
>
> I packed up several files to test in
> https://ulukai.org/ecm/test/2020-09-12--fd12test.zip. Each of
> the .com files in this zip's root directory has a different boot sector
> loader for a FAT12 (diskette) file system. You can use xxx.com
> A: to write the corresponding loader with automatic unit usage, or
> xxx.com A: /U 00 to write that loader but forcing to 00h the
> ROM-BIOS unit to boot.
>
> You can also use ifd12org.com A: /BO /B=boot.bin to dump the
> current boot sector to disk (the /B= option takes any valid
> DOS pathname). If you dump the boot sector that originally worked for you
> and one that doesn't, then upload them for us to inspect, we can be certain
> which loader you're actually using. (Per my other reply it isn't entirely
> clear.)

I did the tests like this:

1) I formatted floppy

2) I copied kernel.sys and command.com into the floppy

3) I applied the various bootloaders you gave me with these results:

ifd12nnc boot OK !
ifd12nnl print "R" and freeze
ifd12nuc boot ok !
ifd12nul print "R" and freeze
ifd12qnc boot ok !
ifd12quc boot ok !
ifd12org whrite dot and crash.


what other tests should i do?

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