The DEC Rainbow had an interesting boot loader. It knew the physical sectors of the io.sys and msdos.sys. so 2.0, 2.1 and 3.1 all were different since the file sizes were different. So version very much mattered.
Also, hard disks had smarter loader, but not by much. So if this isn't 100% you may be down the habit hole needed the exact right disk for this machine... Warner On Thu, Oct 17, 2024, 8:59 PM Fred Cisin via cctalk <cctalk@classiccmp.org> wrote: > I don't know your level of familiarity with DEBUG, assembly, etc. > > So, if you need more detail, then when I get a chance, I could write out > more detailed instructions > > > First step, is to confirm whether the DOS that is running is actually 2.00 > > If so, then we can work on making the DOS 2.11 FORMAT run under DOS 2.00 > > Be aware that 2.11 is an OEM version, and is sometimes heavily customized > for specific hardware. Ideally, you will want the MODE.COM that is > specific toyour hardware. > > -- > Grumpy Ol' Fred ci...@xenosoft.com >
