*BSD News Article 9469


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From: niko@iastate.edu (Nikolaus E Schuessler)
Subject: * Disklabels - help please
Message-ID: <C06r9D.92q@news.iastate.edu>
Sender: news@news.iastate.edu (USENET News System)
Organization: Iowa State University, Ames, IA
Date: Fri, 1 Jan 1993 17:29:37 GMT
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Howdy. I'm trying to write a disk label onto a floppy (from
a non-unix os), which I could do if I knew what to write...

Here is a description of the drive (for 400k ug):

Tracks     Sectors/Trk
0-15           12
16-31          11
32-47          10
48-63           9
64-79           8

I guess the drive rpm is variable as well...

so, what should the disktab have in it? Should I make descriptive
disknames like 'floppy800' and 'floppy1440' and just know from the
type that this is the scheme?

I could do something like:

ns=10
nt=1
nc=80
se=512

so that calculations for total disk space would come out correctly...
(a disk doesn't really have cylinders... right?)

Also, what partitons should a floppy have? just an `a' or `c' partition
(making the others 0 length)? 

since sector size is 512 bytes and the disk is tiny, 
block size = 1k and fragment size=512bytes? Or does one still want them to 
be 8k and 1k (respectively) like the defaults seem to be?

-- 
Niko Schuessler               
Project Vincent Systems Manager              email: niko@iastate.edu
Iowa State University Computation Center     voice: (515) 294-1672
Ames IA 50011                                snail: 272 Durham