Possible PUTR bug?

Just an update... I spent an entire long afternoon wrestling with that old PC, trying to find some combination of HDD jumpers and BIOS settings that would allow the XP hard drive to boot with another drive attached (either on the slave connector or the secondary channel with the CD-ROM removed). No dice. So I had the bright idea to use Minitool's Partition Wizard, and shrink my Windows partition so there'd be room for a newDOS partition. But it won't even run (probably because I have only 64 MB RAM on that box). Grrr. It's unbelievably slow anyhow, so more SDRAM on order, which is really cheap these days. I'd get a newer PC for the workbench, but need to keep the old motherboard because there are a couple of devices (including a PB-10 PROM programmer) which are ISA slots. So, this has become a Windows/PC (ugh) project instead of just being able to play with my PDP-11...