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January 11, 2011


Rob, you saved a few people a trip to a chilly data centre with their winter woollies. Thanks.

If you install V7R7.2.0M1 (the "M1" refers to Service Pack 1, or MH01246, issued 8 Dec 2010) you shouldn't need to install the efixes at all, which are for the earlier release V7R7.2.0M0. No harm done if you try - you'll get a message to advise they're superseded.

Also, if you're looking to burn ISO images rather than the network installation method, the Power6 InfoCentre page ( has instructions. However, you may find the "Obtain the upgrade" link is broken. You can use IBM Fix Central ( Product Group - Power, Product - Firmware and HMC, enter your machine type and download the HMC firmware you need.

Rob, thanks, this was a big help on the first system I tried it on.

On the second, it would have been great. But upon reboot I got "kernel panic". Several attempts later, I made the trek over to the chilly data centre to see what was wrong and DOH, there was bootable media left in the drive that had nothing to do with the HMC. OOOPS.

The newest item on my check list it to ensure the media bay is empty :-)

Just used this to update my HMC from V7R7.1.0.0 to V7R7.3.0.0. It took 20 minutes. Then another 6 minutes to install the corrective service, followed by a reboot.

Finding the HMC updates for updating over the network is still a challenge, especially for the most recent version, as links seem to be broken.

Here's how I got to them for version 7R7.3.0.0:

Hi Rob,
Which account did you use to upgrade the HMC? Can we do it using hscroot? I think we cannot enter commands like ls -la /hmcdump and df with hscroot. Please advise it. Thanks.

If you log in to the HMC via ssh as hscroot, you should be able to run ls -la /hmcdump but you won't be able to cd /hmcdump. The restricted HMC shell doesn't have df, but you can use the equivalent monhmc -r disk (see

Interesting, good to know HMC level can be upgraded from one level to next.

Hello AIX Admins,

I am a Solaris/Linux admin but I want to get into AIX. My company has a p575 and 7042-CR4 in the recycle bin but there is no software on them.

I am told that the HMC works but it only boots to the BIOS. Is it possible to load the HMC to the current firmware if there's nothing there.

The p575 has no drives installed but I am told that it works also. What would I need to do in order to play with vio and lpars? Where does the license come from the HMC or server?

I guess I need information on how to get this running without any software on them in a nutshell.

Thank you

You should be able to use the HMC V7 Recovery DVDs for a new installation. As for the p575, not sure but I expect you'd need a PowerVM license which is installed on the Managed System (the p575) by a menu option in the HMC. I haven't done it before as all Power systems I've worked on have had the license preinstalled.

More details on initial installation here:

If you have a support agreement with IBM or are covered under warranty, you should be able to download VIOS and AIX installation media via

... and if your p575 genuinely has no disks at all - not even internal SCSI or SAS disks - you may still be able to boot the VIOS and AIX logical partitions from SAN by mapping a SAN LUN to a Fibre Channel adapter.

I have done this upgrade on over 20 remote machines. It works well. Before I do an upgrade, I always do a backup to dvd-ram and remote filesystem. It's a tar command. However, I want to point out a problem to the developers. If the upgrade fails, and I have had that happen twice, you cannot load a 7.7.3 backup onto a 7.7.4 machine.

For example, my 7.7.4 upgrade did not load the saveupgdata to the new 7.7.4 image. I now have to get media to go back to 7.7.3 to utilize my backups I took.

Thank you guys for all your help.

I'm in the process of trying to do my first network upgrade. I am going from V7R3.5.0
to V7R7.4.0 and looking for the correct way to perform this upgrade. I've seen where people have used both getupgfiles and updhmc. I've always been local to my HMC until recently so doing an upgrade was no issue just pop DVD in and done but now my HMC is a few states over. I am just a little confused about updhmc and getupgfiles. thx.

Joshua.. updating via network is the only way i want to update the HMC now. Never liked DVD installation and network allows me to do it from the office/home.

getupgfiles = the network images (ie.. in Rob's article the ones with the bzImage listing).. getupgfiles puts the files in the /hmcdump area during transfer and then they move to the hidden area for upgrading when you do the chhmc -c altdiskboot -s enable --mode upgrade.

The updhmc method I use for upgrading ISOs or Service Pack releases.

For 774.. which is what I am doing right now.. I do the getupgfiles to get my HMC from 773 to 774.. and then i updhmc with the SP1 and MH1302.



I agree with Sam.
I use this method to upgrade HMC's in Poland, Germany, Spain, and other locations, all from here in the US.
I avoid network routing and connectivity issues by copying the files from my software repository server here in the US to a local server managed by the remote HMC. I can copy the files to the remote server one day and upgrade the next. I have not had any problems with the getupgfiles command.
This process has worked for me with no issues.


Saved my skin again, Rob. I used this post to upgrade from V7R7.1.0 to V7R7.6.0. Thanks.

Good article. Today I did the upgrade of my HMC from V7R7.6.0.1 to V7R7.7.0.3 using this method. went well and no issues found. only glitch was downloading directly from IBM. It timed out. Hence I downloaded the images to my local FTP and then transferred it to HMC.

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