Error 0x0000007b when run post-fba image boot made with El Torito

Hi.

I'm running the test on Virtual Server 2005 on p4 3.2 HT and 1GB RAM.

I have a problen. I developed an image to boot on CD.

When I run the phase pre-FBA the image boot correctly and i run the command
"efwmgr" and "ewfmgr c:" correctly.After i run "etprep /all" correctly too.

After power off the 'virtual server 2005 machine" and i have done the
changes as is indicated in the help of XPE Sp2. I have deattached the HD and
i have selected boot from CD as Primary master but in the POST-FBA boot, the
system crash with the error 0x0000007b.

I understand that my image is correctly because pre-fba phase running ok, I
think.

when I run the pre-fba i had as: primary master the HD and as primary slave
the cd and in the phase post-fba i have as primary master the cd ONLY.

Any idea?

regards.