Simpler Navigation for Servers and Operating Systems - Please Update Your Bookmarks
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
If you have bookmarked forums or discussion boards in Servers and Operating Systems, we suggest you check and update them as needed.
Operating System - Tru64 Unix
Showing results for 
Search instead for 
Did you mean: 

OS upgradation from 5.1A to 5.1B

Regular Advisor

OS upgradation from 5.1A to 5.1B


I want to upgrade one of our servers from 5.1a to 5.1b I know, space in root, usr & var is a parameter to be observed before upgradation. Below if the "df -k" o/p from the server. Pl let me know, wheather this is ok or do i have to make any modifications before i start the upgrade. Quick response is highly appreciated.

# df -k
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/disk/dsk2a 182996 117593 47103 72% /
/proc 0 0 0 100% /proc
/dev/disk/dsk2g 6126163 920017 4593529 17% /usr
/dev/disk/dsk0c 25864323 6879332 16398558 30% /work
/dev/disk/dsk4c 25864080 6162099 17115573 27% /work2
/dev/disk/dsk1c 8620779 7757701 1000 100% /usr1
/dev/disk/dsk5c 8620779 3314254 4444447 43% /usr2

NOTE: /var is also in the user domain only( under /usr )

Thanks & Regards,
Joris Denayer
Respected Contributor

Re: OS upgradation from 5.1A to 5.1B


1) Space requirements depends on your installed subsets.
2) Space requirements depends on the type of upgrade you will perform (rolling, non-rolling). But in your case it seems to be non-rolling on a standalone system.

Anyway, before the update starts, the procedure will check if there is enough space to continue.

You can check also chapter 3.5.7 of following document

Now, seen the diskspace of / and /usr, there is certainly no problem in /usr.
I think that / will have enough space, but it is less sure. Before starting, check for corefiles, files in /tmp, multiple kernels, etc...

To err is human, but to really faul things up requires a computer
Ralf Puchner
Honored Contributor

Re: OS upgradation from 5.1A to 5.1B

why not using the installation documentation?
Help() { FirstReadManual(urgently); Go_to_it;; }
Mohamed K Ahmed
Trusted Contributor

Re: OS upgradation from 5.1A to 5.1B

The update Installation chapter have all the answers that you would need.
It is located online here:

Honored Contributor

Re: OS upgradation from 5.1A to 5.1B

Hi Ramesh

upgrade looks only for /, /usr and /var file systems. try to release some space under / since system need space to build kernel while upgrading (only 47MB available).

noproblem in others
never give up