My original question was:
I have attempted without success to use a HP Surestore 2600fx Optical drive
on a dec3000 running Digital Unix 3.2C.
The FAQ suggests to try these commands:
newfs /dev/rrz#x /dev/rrz#x
disklabel -rw /dev/rrzXc unknown
I have successfully used the newfs command on other drives, and it has
so far worked perfectly.
However, the disklabel command returns an error:
Unknow device type "Unknown"
Has anybody had any success using these drives ?? Can the problem perhaps
be due to the fact that the sector size is 1024 ??
I received the following answers:
---------------
>From Knut.Hellebo_at_nho.hydro.com Fri Oct 11 06:02:32 1996
Try 'disklabel -rw /dev/rrz# RZXX'
---------------
>From kurt_at_physik.tu-muenchen.de Thu Oct 10 18:22:32 1996
disklabel -wr /dev/rrz*c type
where type is one of the types in /etc/disktab. If have never heard about
the possiblity to specify the type "unknown". I think you will have to
create an entry in the file /etc/disktab (eg: surestore ....) and then
issue the command
disklabel -wr /dev/rrz*c surestore
---------------
>From alan_at_nabeth.cxo.dec.com Thu Oct 10 17:40:06 1996
Digital UNIX doesn't support sector sizes other than
512 bytes. An application using a raw device can
code around it, but the file systems won't behave
reasonably. When disklabel can't find a disktab entry
of the specified name, it queries the device mode pages
that store the geometry. These are part of the SCSI-2
standard, but not all devices support them. I guess
the HP is one of these.
---------------
>From ssides_at_goblin.wr.usgs.gov Thu Oct 10 17:18:25 1996
>From what I've been told and have seen my self. The sector size of 1024
is a problem. There are a couple of companies out there which sell software
to handle such problems. The one I know of is:
Tracer Technologies Inc.
800/872-2370
----------------------------
The 1024 sector size seems to be the problem. So one option
seems to be to find the appropiate third-party software.
I found out that HP supplies the cartridges with sector sizes of
512 as well, but with approx. 10% less capacity.
Thank's for the help
Alex Trangeled
Alex Trangeled
Saclant Undersea Research Centre,
La Spezia, Italy
(Email: trangele_at_saclantc.nato.int)
Received on Fri Oct 11 1996 - 17:25:49 NZDT