*BSD News Article 15733


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From: burgess@hrd769.brooks.af.mil (Dave Burgess)
Newsgroups: comp.os.386bsd.questions
Subject: Re: New DISK! Newer Than disktab!!! OH SHIT!!! HELLLP!!!
Date: 6 May 1993 10:20:47 -0500
Organization: Armstrong Lab MIS, Brooks AFB TX
Lines: 40
Message-ID: <1sbactINN2tt@hrd769.brooks.af.mil>
References: <haley.736682158@husc.harvard.edu>
NNTP-Posting-Host: hrd769.brooks.af.mil
Keywords: New Newer Newest Maxtor 7245AT

In article <haley.736682158@husc.harvard.edu> haley@scws5.harvard.edu (Elizabeth Haley) writes:
>
>I tried one way, a= whole disk (0-965),
>		 b= 902 - 965 (64 cylinders for swap)
>		 c= 0 - 399 (~100 Megs)
>		 d= 400 - 901 (The rest)
>
>Sizes and offset were computed by measuring the various cylinders
>times the sectors per cylinder, 496...
>
>Can someone suggest a method, or point me to a better source of info
>than man pages?
>

OK.  Here goes.

1.  This is covered in the FAQ.

2.  The a: partition is the primary partition.
    The b: partition is the swap partition.
    The c: partition is the amount of the disk used by 386bsd (swap and data)
    The d: partition is the entire disk.

3.  There are utilities that expect this map.  

4.  All numbers in the map are in 512 byte blocks.
400 Cyls for DOS, the rest of the disk for 386BSD.

a: Cyls 400-901 (/usr)
b: Cyls 902-965 (swap)
c: Cyls 400-965 (entire disk used by 386bsd)
d: Cyls   0-965 (entire disk)

If you take the numbers above and multiply by the number of blocks per
cylinder, you should get a reasonable map.  
-- 
------
TSgt Dave Burgess
NCOIC AL/Management Information Systems Office
Brooks AFB, TX