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From: claus@nixhhs.UUCP (Peter Kahl)
Newsgroups: comp.os.minix
Subject: Booting MINIX AT from HD / Wrong CRC
Message-ID: <1324@nixhhs.UUCP>
Date: 6 Sep 90 12:41:36 GMT
Sender: claus@nixhhs.UUCP
Organization: Nixdorf Computer AG, Hamburg
Lines: 50


Hi,
since about three months I am running MINIX 1.5.10 on a PC clone. Thanks to
all guys who did lots of work in the past to make MINIX such an excellent
product.

I am also running MS-DOS 4.01 on my PC (no flames please) and I wish to boot
either MINIX or MS-DOS from my harddisk. My knowledge of MINIX and MS-DOS
is not very deep so far. Sometimes blue-eyed, I took the following steps:

- installed 4 partitions on my 120 MB harddisk, all partitions starting on an
  even cylinder, all partitions having an even number of sectors,
- copied MINIX Boot Floppy to /dev/hd2 (using dd)
- copied MINIX Root File to /dev/hd3 (using dd)
- made partition 2 the active one (with FDISK of MS-DOS and fdisk of MINIX, I
  tried both versions).

When I try to boot MINIX the system comes up with the message BETRIEBSSYSTEMS
FEHLT (= Operating System missing). The guy wo build my PC clone told me that
this message comes from the primary boot sector, which has detected that the
boot sector of partition 2 is invalid or does not contain a specific code in
the beginning of the code.

So, here are my questions (probably silly FAQs):

- What did I do wrong?
- Why is the floppy bootable, but the same code on the harddisk not?
- What is the way around this problem?

Did anybody solve this problem? I remember having seen some stuff in this
group written by Marcelo A. Ferreira Gomes, but the comments in the code were
Portuguese and the stuff got a little bit scrambled on its way through the net.

Any pointers to a solution of this problem will be appreciated.


BTW, on the way to 1.5.10 we only got one (!!) 

               wrong CRC for /lib/ibm/catchsig.s

Everything else seems to be correct. Can some kind soul please e-mail this
file? There were no answers to my last requests in the past.

Many thanks, Claus

Claus-Peter Kahl 		| Nixdorf Computer AG
Tel. +49 40/6371-2420		| Ueberseering 33
(...uunet!)unido!nixhhs!claus  	| 2000 Hamburg 60
    NERV: nixhhs!claus.eunet  	| West Germany