topic Re: learning to install in Operating System - HP-UX

learning to install

Teck Sim — Thu, 13 Jun 2002 18:59:00 GMT

Current System Properties:

Processor: 1
Hardware: 9000/803/D220
Physical Memory: 128.1 MB
Swap Space: 256 MB
OS: HP-UX B.11.00 A

Current bdf:

Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 143360 75520 63672 54% /
/dev/vg00/lvol1 251285 28094 198062 12% /stand
/dev/vg00/lvol8 770048 172758 560978 24% /var
/dev/vg00/lvol5 770048 347557 396113 47% /usr
/dev/vg00/lvol4 102400 1199 94946 1% /tmp
/dev/vg00/lvol7 856064 63739 742941 8% /opt
/dev/vg00/lvol6 20480 1138 18137 6% /home

I would like to clean up this machine, and learn how to install 10.20 back to this machine, and then do a cold install back to 11 again.
Any suggestions at all as to what steps to take in order to down grade to 10.20?

I am quite new to the UNIX world, and please be patient with me.
Thanks in advance.

Re: learning to install

Sanjay_6 — Thu, 13 Jun 2002 19:06:11 GMT

Hi,

Just go ahead and do a destructive reinstallation of 10.20. When you want to reinstall 11.0, do a destructive reinstall of 11.0. Since you want to do a test, you don't have to preserve anything. A destructive install would be less time-consuming and more beneficial.

Hope this helps.

Regds

Re: learning to install

PIYUSH D. PATEL — Thu, 13 Jun 2002 19:09:18 GMT

Hi,

Cleanup is not required. Go ahead with the installation of 10.20 OS. You can do a cold install...there are no issues.

And again you can install 11.0.

downgrading is not possible ...you can always do an upgrade from 10.2 to 11.0 but there are lot of issues in it.

Fresh install is better.

Piyush

Re: learning to install

A. Clay Stephenson — Thu, 13 Jun 2002 19:35:14 GMT

I'm going to suggest that you kill two birds with one stone. While you could simply install 10.20 or 11x over your existing disk, now would be a very good time to also learn to use Ignite/UX.

Unless you have a very good reason to install 10.20, I wouldn't bother. The differences between an 11x install and a 10.20 install are trivial and the need to do new 10.20 installs decays exponentially with time. I think your time would be much better spent learning to recover systems with Ignite using make_tape_recovery - this does assume that you have a tape drive.

Food for thought, Clay

Re: learning to install

James R. Ferguson — Thu, 13 Jun 2002 20:32:09 GMT

Hi Teck:

I wholly agree with Clay. Download and install a copy of the current Ignite software. Create an 'make_tape_recovery' tape of your server. Then, to get you feet wet, recover your server from that tape as if something had gone badly wrong. Then, proceed to do a cold-installation. Part of the rationale is that you always want to have a current recovery tape to which you could fall back if your cold-installaton (or upgrade) failed.

Ignite software and documentation is availble here:

http://www.software.hp.com/products/IUX/download.html

The installation of ignite is simple, done with 'swinstall' and does not require a reboot. You can download and be making a recovery tape within 20-30 minutes.

To get you started down this road:

A standard tape archive of vg00 can be produced by using the following command:

# make_tape_recovery -x inc_entire=vg00 -I -v -a /dev/rmt/0mn

Don't confuse the '-i' option of the old 'make_recovery' with the '-i' option of its replacement, 'make_tape_recovery'. The '-I' option of make_tape_recovery is the *same* as the '-i' option of make_recovery. '-I' means cause the Ignite process to be interactive when booting from tape.

Regards!

...JRF...