Subject: RE: Partitions
To: RiscBSD Mailing List <port-arm32@NetBSD.ORG>
From: Daniel Blueman (5) (CURRICULUM) <5DBLUEMAN@qeliz.ac.uk>
List: port-arm32
Date: 02/04/1997 09:32:00
Hi,

On 4/2/97 'kle@swe.gppm.de' wrote:
>is there anybody who knows, if it is possible
>to partition a 3GB drive (2GB used) for RiscBSD
>without backing up the RiscOS files ? I would like
>to have 1 GB partition for RiscBSD.
>For DOSes there is a tool available, for RiscOS too ?

This is not possible since you need to use !HForm to alter the
RiscOS partition size. It could be done by altering all the disc
map and the like, but this would be *far* too complex.
For DOS there is a util lurking around which can be used to
repartition the harddisc without losing information, but I don't
recommend this.

>Another problem is my SCSI DEC drive and Acorn SCSI Version1
>controller. Together they work very slow although the drive is
>very fast and the controller can transfer data up to 2 MB/s.
>But together they have a DTR from approx. 300kb/s writing and
>500kb/s reading. Changing interleaving factor and reformatting
>brought no positive results. Does anybody know what's wrong ?

The current problem is that the kernel polls (checks) the interface
every so often, to check if there is any pending data. This means
it does not use the interrupts generated by the card. The card
also supports DMA transfer, which is being worked on ATM.
Hopefully soon a kernel will appear with the relevant code in it.


Thanks,
Daniel Blueman