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Path: sserve!manuel!munnari.oz.au!hp9000.csc.cuhk.hk!uakari.primate.wisc.edu!ames!nsisrv!Pt!postmaster@hq.af.mil!rick From: rick@postmaster@hq.af.mil (Rick Weldon) Newsgroups: comp.unix.bsd Subject: Setting up bootable DOS pertition by hand Keywords: DOS Message-ID: <4500@hq.hq.af.mil> Date: 29 Jul 92 14:42:46 GMT Sender: news@Pt.hq.af.mil Reply-To: rick@hq.af.mil Organization: 7TH Communications Group Lines: 72 I want to be able to boot DOS as well as 386BSD from the HD. I haven't seen much discussion on this specifically. Most of the discussion seems to be around accessing DOS from 386BSD. My questions though are centered around getting DOS to boot. I tried to use the automated install script and it blew up. I did as the release notes suggested and used fdisk to create a DOS partion on the beginning of the drive, but install munged things, so I ended doing a manual install to the whole disk. I used Chris Demetriou's method to install everything on seperate partitions. Boot from HD-- no problem --all is well. Now what I want to do is set up that DOS partition by hand. I want to use the first 30Mb of the disk and leave the rest for 386BSD. I am assuming that I will have to write the disklabel by hand taking into consideration the DOS partition. So I am assuming something like this: wd0a 32 Mb into the disk -- to 37 Mb wd0b 37 Mb to 42 Mb swap wd0c whole disk wd0d 0 Mb to 30mb for DOS wd0h 42Mb to end of disk Now the fun part. 1. If I put DOS on to the first 30 Mb of the drive how does the boot image know where to go to boot 386BSD. I would assume that it reads the disklabel and then looks for the kernel image 32 Mb into the disk on the wd0a partition. Is this the case? 2. When I shutdown todos I assume that the shutdown program tweaks the boot image to tell it to boot DOS instead, Or simply makes the DOS partition active. If the latter is true all I should have to do is run fdisk and de-activate the DOS partition to get back to 386BSD. This is where things get hazy, I was hoping someone might be able to explain this a little better. Another words how do I get back and forth between DOS and 386BSD. I also remember reading that a lot of people were having trouble with the shutdown -to-dos script. A complaint that shutdown couldn't make dos bootable or something similar. Was this ever resolved? Any help at all would be appreciated. I was hoping for something like Chris Demetriou's step by step, but edited to include how to set up a DOS partition by hand. Please post here. I read this group all of the time |-). (Have you ever noticed that the people who want the most information from a particular group don't read the group. They always ask for any helpers to e-mail because they don't have time to read the news.) If anyone cares I'll put the whole thing together and post it. I have Chris's step by step. Thanks so much to Bill, Lynne and Chris Demitriou -- Rick Weldon I-NET Inc. (Pentagon, 7TH Com Group) E-mail: rick@hq.af.mil Phone: 703-695-5060