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Received: by minnie.vk1xwt.ampr.org with NNTP id AA6581 ; Mon, 11 Jan 93 02:08:41 EST Path: sserve!manuel.anu.edu.au!munnari.oz.au!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!natinst.com!hrd769.brooks.af.mil!hrd769.brooks.af.mil!not-for-mail From: burgess@hrd769.brooks.af.mil (Dave Burgess) Newsgroups: comp.unix.bsd Subject: Re: 386bsd HELP laptop back to DOS 5.0 H/Disk prob Date: 13 Jan 1993 09:05:22 -0600 Organization: Armstrong Lab MIS, Brooks AFB TX Lines: 51 Message-ID: <1j1b3iINN973@hrd769.brooks.af.mil> References: <1992Dec11.163609.9644@ryn.mro4.dec.com> <1993Jan13.042929.28504@fcom.cc.utah.edu> NNTP-Posting-Host: hrd769.brooks.af.mil In article <1993Jan13.042929.28504@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes: |In article <1992Dec11.163609.9644@ryn.mro4.dec.com> ashley@gidday.enet.dec.com (STEPHEN ASHLEY) writes: |> HELP HELP, |> Fellow 386bsd people, I am in a bit of a bind and need help on |>this one. I tryed (for a lark) installing 386bsd on to my laptop tonight, |>it is a 386sx/16 olivetti V16. Anyway the install got creamed 3/4's of the |>way through the extract, I had to go to work. I took the laptop to work |>with me and decided to reinstall DOS 5.0 back on to the hard drive. But | ^^^^^^^ |>I can't get the thing to boot of the hard drive even after several 'fdisk' |>sesions and diffrent combniations of primary and extended DOS drives. I |>keep getting this message :- |> |DOS 5.0 command to overwrite master boot record: | | fdisk /mbr | |For non DOS-5.0 DOS-heads: | | Instructions in README and INSTALL documents. | | If that doesn't clear the MBR (it should), you may need to completely invalidate the master boot record by writing over the raw hard drive. The INSTALL.NOTES suggest "cat /386bsd >/dev/rwd0d". ANy file bigger than 8K should work. If you decide to cat something over your hard drive, you WILL need to re-fdisk and reformat. If you have the facility to low-level format the drive, that is also a reasonable solution. Since you are 'between installations', I would recommend the following to finish up (assuming you MUST use DOS :-( ): - From DOS try the fdisk/mbr to completely reinitialize the master boot record. - If that works, you are done. - Finish the BSD installation. Get the minimum on the system to get it to boot. - Use 'cat /386bsd... to overwrite the disk partition information and completely hose your hard drive partition table and Master Boot Record. - Reinstall your OS of choice onto your now completely confused hard drive. - You are done. TSgt Dave Burgess NCOIC AL/MIS Brooks AFB, TX