Upgrading SCO: no root disk controller found

I have a HP Netserver LH Pro running SCO openserver enterprise 5.0.4, which is has to be upgraded to 5.0.5.  When I place the upgrade CD in it boots up, then comes up with the message

...
%adaptor 0xF800-0xF8FF 15 - type=alad ha=0 bus=0 id=7 fts=sto
%adaptor 0xF4FF-0xF4FF 15 - type=alad ha=1 bus=0 id=7 fts=sto
%tape - - - type=S ha=0 id=2 lun=0 bus=0 ht=alad
%cdrom - - - type=S ha=0 id=5 lun=0 bus=0 ht=alad
Warning: hd: no root disk controller found
...

If you continue, it allows a new install but not an upgrade.  How can I make it see the current install to allow an upgrade?
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syzygyAsked:
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fredericoConnect With a Mentor Commented:
go to
http://www.hp.com/cposupport/servers/software/lhprodrvsco5x.exe.html
and download the drivers. This is an executable file for "Win/Dos" and you will need to execute it.

Once you have, there is a readme in the files extracte, that will tell you what to do.
If not you can always come back and tell me what you have on the files, and well see what are the next steps.
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gurumaartenCommented:
Could it be that you might need to define a bootstring for proper initialization of your controllers??
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syzygyAuthor Commented:
Possibly.  I don't know that much about SCO; I can use it once it's set up, but have never had to install it before.
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syzygyAuthor Commented:
That seems obvious now.  I used the disks made from the Utility CD originally supplied - it worked fine.

Many Thanks.
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