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Subject: True life story | FAQ how to install linux on hd
Date: Thu, 14 Nov 91 21:47:28 +0100
From: (Marc CORSINI)
In-Reply-To: Ari Lemmke's message of Thu, 14 Nov 1991 14:31:39 +0200 

Hello happy lunixers,
don't know if the subject is still under interest, but since the
title is clear u can easily trash it.
I'm not a Unix guru, nor a C guru, nor even a Msdos guru (but who
cares), and I do not have minix. Ok, now about my hardware:
a 386 sx, 2Mo Ram, 2hd one single bootable partionned Dos (120Mo)
and a 2 partitionned 40Mo (8 for dos, 32 for linux). Drive A is 1.44Mo
and B a 1.2Mo. To install once linux it took me 3days (36hours), to
reinstall it a second time no more than 1/4 an hour :-))
So i think that the following menu might be interesting (for future
linuxers), for others just have a look on (II.a.2 and III.):

I. image to diskette
a) First of all get the minix demo-disk on in
b) *don't forget* the rawrite.c program
c) rawrite the demo_disk on a formatted diskette (if u have trouble
like I had comment the error detection !!)
d) get the linux image on or any other place
e) rawrite them on /identical size/ diskette (either 1.2 or 1.44)
f) choose a partition on (one of) ur hd(s)

that's all for dos time

II. unix for i386 ....

a) boot on the minix demo disk
PAY ATTENTION this demo disk can ONLY access to the 1st disk so
a.1: if ur choosen partition is on hd0 (the first one) do
mkfs /dev/hdX where X is in [1..4] the partition *UNDER MINIX* are
a.2: u silly choosed a partition on the 2nd hd (hd1) in that case u
have to [thanks linus it was simple and efficient]

	1) Mount the linux root Image
	 -- if u use a 1.2 Mo drive do /etc/mount /dev/fdX /yyy
	 where X is 0 for drive A and 1 for drive B
	 -- if u use a 1.44 drive do /etc/mount /dev/PSX /yyy
	 where X is same as above
	 /yyy is the directory where u mount
	2) then Perform a mkfs 
	mkfs /yyy/dev/hdY
	where Y is in [6..9]

THAT's all for minix

b) boot on the linux bootimage, if all is fine (it should be), put the
rootimage disk ok.
c) now mount the partition:
PAY ATTENTION under *LINUX* the partition numbering is NOT the minix
one try a "backward" numbering i.e. either from 4 to 1, either from 9
to 5.
d) copy the files/directories (easy, there is a bash script in
INSTALL-0.10 on

III. How to change ur bootimage to access directly on hd

Simple if u take the C program in INSTALL-0.10 *AND* if u know that:

the device number to use
#define NEW_DEV is_partition_number_under_linux



OTHERWISE (* i was in that case *)

U HAVE TO CHANGE SOMETHINGS *only the diffs are pointed out* in what
follows (in french i would have said "inversion des bits de poids
forts et de poids faibles")

#define NEW_DEV 0x301  ---\      for DOS
#define NEW_DEV 0x103  ---	 for SUN/ALLIANT/...

		[identical part deleted]

	if (0xAA55 != *((unsigned short *)(tmp+510)))
	if (0x55AA != *((unsigned short *)(tmp+510)))

		[rest is identical]

IV Enjoy this UniX kernel

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