Re: DOS 3.3 File Manager calls - stomping on Track 0, sector 0

["Alex Freed" <alexf@mirrow.com>]

"josephoswaldgg@hotmail.com" <josephoswald@gmail.com> wrote in message
1166639037.605282.109950@t46g2000cwa.googlegroups.com">news:1166639037.605282.109950@t46g2000cwa.googlegroups.com...
>
> > Except... track/sector 0/0 is overwritten with a repeating sequence of
> > (0x00 0x00 0xff 0xff) bytes.  Is there a common trap I'm falling into
> > here?  Code below...
>
> Don't know what trap this might be, but that byte pattern looks
> something vaguely like the volume free-sector map.

Or uninitialised DRAM. Turn the (Apple) computer on with no disks, go to
monitor
and dump some memory that was not written to. Say at $2000. It will look
much like
that.

-Alex.