🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: comp.sys.acorn.tech
Article #571

Re: MFM Harddisc size

#571
From: gaspar
Date: Fri, 20 Nov 1992 16:35
45 lines
2309 bytes
In article <1992Nov19.090920.8363@csd.uwe.ac.uk>, r_voisey@garlic.uwe.ac.uk (R Voisey) writes:
> In article <1992Nov17.180524.42564@urz.unibas.ch>, gaspar@urz.unibas.ch writes:
> 
> |> > bigger than 50Megs you have to swap a link (to change sector size I think).
> |>                                / ^^^^^^^^^^^
> |> Could someone tell me what this means? 
> 
> |> 9 heads and when I enter that parameter I get a message that I might! 
> |> swap link 3 or something like that.
> 
[ text deleted]
   So, if you want to swap link 3 you have to take the lid off your
> machine, and find J3. 
[text deleted

> 
> Hope that helps

Yes it helped! Thanks. The jumper wasn't called J3 though. There are two 
jumpers next to the cables that go to the drive and they are calld PL8 and PL9.
I tried out every combination of setting and it worked with BOTH jumpers 
changed. Does someone (maybe from Acorn?) know if that's ok?

The problem wasn't solved completely because the drive should have 88 Meg
capacity. After formatting with 17 Sect/Track, 9 Heads and 1024 Cylinders
(The controller cannot cope with more that 1024, I think. The drive has 1073
cylinders), I had about 40 Meg free on the drive. Where is the rest???

I tried to format the drive with 32 Sect/Track and it worked. But this is
probably not advisable to do.
Any ideas?

> Bob
> 
> -- 
>   Robert J. Voisey  :  r_voisey@csd.uwe.ac.uk
>          -- Probug Software Developments --
> 162 Staplehill Rd, Fishponds, Bristol, Avon, England

laci
-- 

*******************************************************************************
*             Laci Gaspar, University Basel, Switzerland                      *
*******************************************************************************
Technical Details
Message-ID: <1992Nov20.173551.42574@urz.unibas.ch>
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!zaphod.mps.ohio-state.edu!rpi!ghost.dsi.unimi.it!univ-lyon1.fr!chx400!urz.unibas.ch!gaspar
References: <1992Nov16.103443.42555@urz.unibas.ch> <1992Nov17.105656.22343@csd.uwe.ac.uk> <1992Nov17.180524.42564@urz.unibas.ch> <1992Nov19.090920.8363@csd.uwe.ac.uk>

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!zaphod.mps.ohio-state.edu!rpi!ghost.dsi.unimi.it!univ-lyon1.fr!chx400!urz.unibas.ch!gaspar
From: gaspar@urz.unibas.ch
Newsgroups: comp.sys.acorn.tech
Subject: Re: MFM Harddisc size
Message-ID: <1992Nov20.173551.42574@urz.unibas.ch>
Date: 20 Nov 92 17:35:51 MET
References: <1992Nov16.103443.42555@urz.unibas.ch> <1992Nov17.105656.22343@csd.uwe.ac.uk> <1992Nov17.180524.42564@urz.unibas.ch> <1992Nov19.090920.8363@csd.uwe.ac.uk>
Organization: University of Basel, Switzerland
Lines: 45