Matthew Ogilvie <mmogilvi_q...@miniinfo.net> writes: > I've recently been trying to get an ancient version of UNIX > I used to use working in qemu: > > Micoport UNIX System V/386, v 2.1 (ca 1987). > > I used this from about 1987 until about 1996, when I first > got Linux. [...] > I've also noticed some other problems that I have not yet > tracked down: > > ------- > Hard Drive Issues: > ------- > > I also encounter a couple of hard drive issues, which I haven't > investigated as carefully, nor attempted to work around: > > 1. It doesn't seem to recognize the hard drive geometry, even > if I use "-hdachs" and keep it carefully inside ancient > limitations. Note that at the time, hard drives did not support > self-identification commands for the geometry; you had to > configure it in BIOS. I also have some old notes from when my > dad was asking Microport about compatibility; apparently > they wanted to know the specific BIOS version in order to > decide about compatibility. Maybe UNIX is bypassing later > standards for looking up geometry, and trying to get it in > some non-standard way (straight from CMOS or something?)
Please run QEMU with -trace events=trace-events, where trace-events is a file containing the line "hd_geometry_*". Post results, along with your full command line. [...]
