Ole :
Don't stop now. Its getting interesting. Finish the
story...After low level, you have to Fdisk and DOS format with /s
switch etc.. :-)
Regards
Harsha Godavari
Ole Juul wrote:
>
> Hi Vrondi:
>
> You wrote:
> > So, Any thing anyone can explain to me about the
> > Seagate ST-225 Hard Drive would be wonderful. Thanks.
>
> This is one of the most common drives you are likely to
> encounter on older machines. (it's _my_ favourite) They
> work really well and don't quit easily. You will find
> these drives still in use. The encoding is MFM and there
> is a premium model (closer tolerences) which can be
> formatted to RLL. Ofcourse you can do that to the ST-225
> as well (try it as a learning experience) but you will get
> too many errors. I used to come across these in machines
> which were puported to not work. Hehe, what they didn't
> know is that you have to low level format them as part of
> a maintenance schedule. Usually, these supposedly non
> working drives are perfectly good. It's water under the
> bridge now as we can usually get good IDE drives for
> nothing which are much faster and less noisy.
>
> So: down to the nitty gritty .....
>
> 21 megabytes
> 4 heads
> 615 Cylinders
> 17 Sectors
>
> Access time is about 65ms ... so don't hold your breath.
> The jumper settings are easy: the pins nearest the narrow
> cable are junpered for drive select 1.... the next one
> over toward the wide cable is 2, and so on.
>
> Hmm, what else would one need to know?
> I suppose you know how to format these beasties? If not,
> here it is. You need an RLL controller card, remember this
> is before they put the card on the disk and called it IDE.
> The drive bios is on that card, so once it is formatted
> using that card, it may not run on another card without
> re-formatting.
> Unlike IDE drives, you have to first do a low level
> format. The routine for this is on the controller card.
> You run the program using debug. Like this:
>
> debug
> -g=c800:6
> - do whatever it says <g>
>
> Depending on the bios, it will ask you stuff like
> interleave (use default) and precompensation (use 300 to
> 614). You may also encounter another address. If c800:6
> doesn't work, try c800:5 or c800:ccc.
>
> Oh, yeah ... (you got me going now) hehe....
> Format it at the temperature and physical orientation
> you plan to use it at. This makes a difference in the long
> run. Anyways, I better stop before it starts to bore other
> people who have (less interesting) IDE drives. <G>
>
> Cheers,
> Ole Juul
>
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