Can't boot from a split mirrored disk set

[markzz]

The is the situation.
I have a running DL380g3 server with a pair of 36GB disks in a hardware mirror.
If I remove disk 1 and reboot the server I accept the "prompt with an f2 to OK continue in intrum recovery mode" If I then decide that I need to return to my original disk 1, I would shut the server down, remove Disk 0 put disk1 in and reboot the server. I'll again be prompted to and accept "intrum recovery mode" with f2 but the server will fail to boot or recognise the bootable System.
If I warm boot the server it may or may not boot report that disk 0 appears to have been replaced and boot.
This has only occured since integrated controller 5I bios version 2.56.
The previous version 2.38 (I think) did not do this and behaved correctly allowing you to split a mirror and boot of either.
Is this an issue that HP are aware of??? Is there some tweek I'm missing to prevent this.
Thanks guys...
This

[Uwe Zessin]

I have tried to answer the question in the following thread as it is in no way HP-UX / LVM related.
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=594295

[Tim D Fulford]

You say the root disks are mirrored using "hardware mirror", I suggest you say how, using wath type of hardware VA74xx, EVAxxxx EMC...

Regards

Tim

[Uwe Zessin]

Tim,
he is apparently talking about a SmartArray controller in his ProLiant server.

[markzz]

This is correct, the raid controller is a Compaq Smart Array 5I which is integrated on the DL380g3 system board.

[Tim D Fulford]

Mental not to self ... Read The F...ing Question...

oops, did I just say that out loud?

Tim