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- Newsgroups: comp.unix.sysv386
- Path: sparky!uunet!maxed!ed
- From: ed@maxed.amg.com (Ed Whittemore)
- Subject: Re: ISC 3.0 multiple FDISK partitions?
- Message-ID: <BxMvFn.L5G@maxed.amg.com>
- Organization: American Micro Group, Ft. Lee NJ
- References: <BxKEKD.v0@ad4su1.rsre.mod.uk> <1992Nov12.062326.19981@timesink.chi.il.us>
- Date: Fri, 13 Nov 1992 02:40:34 GMT
- Lines: 75
-
- In article <1992Nov12.062326.19981@timesink.chi.il.us> mikebo@timesink.chi.il.us (Michael Borowiec) writes:
- >In article <BxKEKD.v0@ad4su1.rsre.mod.uk> druid%caercn@ajax.rsre.mod.uk (ad4su1) writes:
- >>On my hard disk I have three *real* partitions---i.e., created with FDISK.
- >>The first is for DOS, the second for ISC 3.0, the third is spare.
- >>I would also like to use the third partition for ISC, as a home partition.
- >>
- >>Is this possible?
- >
- >Yes, use /dev/dsk/0p3
- >
- >>
- >>It seems to me that ISC only ever looks at the first UNIX partition,
- >>which it divides into several of what it calls partitions. I am not
- >>able to re-FDISK at this stage and thus merge the second and third
- >>partitions.
- >>
- >>Can anyone suggest how I can make use of my third partition from UNIX?
- >>
- >> Regards and thanks,
- >> Mark.
- >
- >Here is the poop on using DOS fdisk partitions in ISC UNIX >= 2.2 from
- >the 2.2 release notes:
- >/dev/dsk/...
- >np0 Entire physical drive n
- >np1 1st fdisk partition on drive n
- >np2 2nd "
- >np3 3rd "
- >np4 4th "
- >np5 1st extended DOS partition on drive n
- >np6 2nd "
- >... etc, etc, through
- >np15 11th extended DOS partition on drive n
- >
- >Additional info:
- >ns0 Entire UNIX system partition on drive n
- > (not the entire disk as it meant in 1.x releases of 386/ix)
- >ns1 1st "soft" UNIX partition in the UNIX fdisk "hard" partition
- > (usually root)
- >
- >The spec changed from 2.2.x to 3.0.x in that:
- >/dev/dsk...
- >c0d0s3 <= 2.2.x syntax for Controller 0, Disk 0, Slice 3 (usually /usr)
- >c0t0s3 >= 3.0.x syntax for Controller 0, Target 0, Slice 3
- >
- >I had configured my 2nd fdisk partition as a 64MB DOS partition. Since
- >I didn't need it as a DOS parition any longer, I simply did a mkfs,
- >labelit and mount and, voila... I have a new 64MB UNIX partition I
- >mount as /dev/dsk/0p2. Works like a champ...
- >- Mike
- >
- >PS> Get 3.0.1 or 3.0 Update disk FD3.0S.3 to be able to mount DOS 4/5
- > (or Compaq DOS 3.31) partitions greater than 32MB under UNIX like:
- > mount -f DOS /dev/dsk/0s? /dos
- >
- This is very interesting, and appears to work with some disks as the
- first or second physical drives, but not all, or 3rd drives. But in some
- instances, while mkfs, and fsck seem to work, mount does not giving
- the error message:
-
- mount: /dev/dsk/c0t2p1 no such device
-
- We also get complaints from the disk controller:
-
- NOTICE: free block read error on Bustek 742 SCSI HBA Controller <bt742> DISK Target 2, LUN 0 partition 17
-
- Partition 17, hmmmm...:)
-
- Too bad. I suppose the advice would have to be--if it works for you
- great, if not...
-
- I wouldn't like to rely on this for file storage.
- --
- Ed Whittemore uunet!maxed!ed ed@maxed.amg.com
- American Micro Group, Inc. 201-944-3293
-