SCO

You cannot dynamically resize file systems.
The best solution is to acquire another (4th) disk and create a second mirrored system drive. These drives can be up to 33gb. Even though 72gb and greater drives are available, I can say from personal experience that timing issues arise.
After you have installed the two new drives, run the daccf configuration software to create and intialize a new system disk.
Then boot the system and run:
#mkdev hd
enter the scsi information should be adapter 0, channel 0, id 1, lun 1
in divvy use the entire disk for one file system, name it u2 for now.
Create two new directories /home and /u2 permissions same as /u1
When you have re-booted the system, start scoadmin and go to Filesystems, add the file system ( /dev/u2 to /u2), and mount now.
Copy all of /u1 to /u2
Go back into scoadmin ->filesystem ->modify and
modify /dev/u2 to mount to /u1 directory, and
modify /dev/u1 to mount to /home

Re-boot, and restore u1 from the tape.
Rebuild your lonetar emergency boot diskettes.
Later if you wish you can go into divvy and rename /dev/u1 to /dev/home, and /dev/u2 to /dev/u1

You will get a reasonably good performance gain, and some peace of mind, as well by also replacing the original 4.3gb disks with 18's or 33.

Update: Am still running out of space. I put in place a 17GB HDD to do jgt's suggestions with a hitch though. It seems that I can't rebuild my kernel as since /stand is out of space.

Would booting up in single user mode enable me to delete this? Appreciate more inputs again. Thanks.

-r--r----- 1 bin mem 3489806 Oct 24 15:52 unix
-rw-rw-rw- 1 root sys 1152419 Oct 23 06:02 __A2
-r--r----- 1 root sys 3489114 Oct 16 16:05 unix.orig
-r--r----- 1 bin mem 1989021 Jun 7 1999 unix.safe
drwxrwxr-x 3 bin auth 48 Jun 7 1999 etc
-r--r----- 1 bin mem 2014460 Jun 7 1999 unix.install
-r-------- 2 bin bin 6471 Jun 7 1999 bootos
-r-------- 2 bin bin 6471 Jun 7 1999 dos
-rwx------ 1 bin bin 2458 Jun 7 1999 sfmt
-r-------- 1 bin bin 72662 Jun 7 1999 boot
-r-------- 1 bin bin 52327 Jun 7 1999 link
drwxrwxrwx 2 root root 32 Jul 27 1998 lost+found


bash-2.03# df -v
Mount Dir Filesystem blocks used free %used
/ /dev/root 3373036 3316270 56766 99%
/stand /dev/boot 30720 24674 6046 81%
/u1 /dev/u1 3373036 3316270 56766 99%



%disk - - - type=S ha=0 id=0 lun=1 bus=0 ht=mdac

%disk - - - type=S ha=0 id=1 lun=1 bus=0 ht=mdac

---------- Post updated at 09:09 AM ---------- Previous update was at 09:07 AM ----------

forgot to add this as well

bash-2.03# mkdev hd 10 0 0 1 1

Missing 'sdevice.d' file for host adapter driver '1'

Enter the prefix of the SCSI host adapter that supports this devi
or press <Return> for the default: 'alad'
Enter h for a list of host adapters or enter q to quit:

You can clean out some of the old kernels in /stand.
/stand is mounted in read only mode during normal operation.

Do this by:
#cd /
#umount /stand
#mount /dev/boot /stand
#cd stand
#rm (keep unix and unix.old, delete anything older, or gzip and copy to diskette)
#cd /
umount /stand
#mount -r /dev/boot /stand

We already habe successfullt removed those unwanted unix kernel files. We encountered another error in trying to do mkdev hd. Any more inputs? Thanks

%disk - - - type=S ha=0 id=1 lun=1 bus=0 ht=mdac

bash-2.03# mkdev hd 10 0 0 1 1

Missing 'sdevice.d' file for host adapter driver '1'

Enter the prefix of the SCSI host adapter that supports this device
or press <Return> for the default: 'alad'
Enter h for a list of host adapters or enter q to quit:

The Host Adapter parameters will be automatically configured
\nDuring installation you may choose to overwrite all
or part of the present contents of your hard disk.
\nDo you wish to continue? (y/n) \c
y
idmkreg: can not locate or open 'Sdsk/device.dat'
\nThe hard disk installation program will now invoke /etc/fdisk.\nEntering 'q' a
t the following menu will exit /etc/fdisk,\nand the hard disk installation will
continue. \n\nIf you wish to exit the entire installation at this menu,\npress t
he <DEL> key.\n
/etc/fdisk: cannot open /dev/rdsk/2s0 for reading: No such device or address (er
ror 6)
/usr/lib/mkdev/hd: [: : integer expression expected
/etc/fdisk failed.
bash-2.03#

The default device that mkdev prompts for, is the last device used (so likely the tape was added last.)
Change the host adapter to mdac.
The scsi details are adapter 0 bus 0 scsid 1 lun 1

did what you suggested jgt....can't makedev the device. went to /dev. found these devices.

Appreciate more inputs, again. Thanks.

bash-2.03# ls -lt *hd1*
brw------- 1 sysinfo sysinfo 1, 64 Jun 8 1999 hd10
brw------- 1 sysinfo sysinfo 1, 79 Jun 8 1999 hd11
brw------- 1 sysinfo sysinfo 1, 87 Jun 8 1999 hd12
brw------- 1 sysinfo sysinfo 1, 95 Jun 8 1999 hd13
brw------- 1 sysinfo sysinfo 1,103 Jun 8 1999 hd14
brw------- 1 sysinfo sysinfo 1,111 Jun 8 1999 hd1a
brw-r----- 1 dos sysinfo 1,112 Jun 8 1999 hd1d
crw------- 1 sysinfo sysinfo 1, 64 Jun 8 1999 rhd10
crw------- 1 sysinfo sysinfo 1, 79 Jun 8 1999 rhd11
crw------- 1 sysinfo sysinfo 1, 87 Jun 8 1999 rhd12
crw------- 1 sysinfo sysinfo 1, 95 Jun 8 1999 rhd13
crw------- 1 sysinfo sysinfo 1,103 Jun 8 1999 rhd14
crw------- 1 sysinfo sysinfo 1,111 Jun 8 1999 rhd1a
crw-r----- 1 dos sysinfo 1,112 Jun 8 1999 rhd1d
bash-2.03# ls -lt *hd2*
brw------- 1 sysinfo sysinfo 139, 0 Oct 27 07:22 hd20
brw------- 1 sysinfo sysinfo 139, 15 Oct 27 07:22 hd21
brw------- 1 sysinfo sysinfo 139, 23 Oct 27 07:22 hd22
brw------- 1 sysinfo sysinfo 139, 31 Oct 27 07:22 hd23
brw------- 1 sysinfo sysinfo 139, 39 Oct 27 07:22 hd24
brw------- 1 sysinfo sysinfo 139, 47 Oct 27 07:22 hd2a
brw-r----- 1 dos sysinfo 139, 48 Oct 27 07:22 hd2d
crw------- 1 sysinfo sysinfo 139, 0 Oct 27 07:22 rhd20
crw------- 1 sysinfo sysinfo 139, 15 Oct 27 07:22 rhd21
crw------- 1 sysinfo sysinfo 139, 23 Oct 27 07:22 rhd22
crw------- 1 sysinfo sysinfo 139, 31 Oct 27 07:22 rhd23
crw------- 1 sysinfo sysinfo 139, 39 Oct 27 07:22 rhd24
crw------- 1 sysinfo sysinfo 139, 47 Oct 27 07:22 rhd2a
crw-r----- 1 dos sysinfo 139, 48 Oct 27 07:22 rhd2d

bash-2.03# divvy /dev/hd10
divvy: could not open temporary node: No such device or address
bash-2.03# divvy /dev/hd20
divvy: could not open temporary node: No such device or address

---------- Post updated at 12:24 PM ---------- Previous update was at 11:55 AM ----------

additional info:

Tue Oct 27 09:18:07 2009
%disk - - - type=S ha=0 id=1 lun=1 bus=0 ht=mdac
%Sdsk - - - cyls=8750 hds=128 secs=32 fts=sdb
%disk - - - type=S ha=0 id=1 lun=1 bus=0 ht=mdac
%Sdsk - - - cyls=8750 hds=128 secs=32 fts=sdb

the command is
#mkdev hd

Also post contents of /etc/conf/cf.d/mscsi (don't need commented lines)

During POST, do you see a comment about 2 system drives found, or just 1
If you are only adding one drive, you still have to set it up as RAID 0.