How to dual boot Vista and XP using Dynamic Disks

Hello.,

Before when i want to dual-boot XP and Windows Server 2003 using two HDD, i
install XP in Disk 0 and then install W2K3 on Disk 1, and then o convert the
Disks to Dynamic Disks using each OS, and everthing work fine, both OS are
able to see the dynamic disks...

I start the same process install XP on Disk 0 and Vista Business on Disk 1,
then convert Disk 0 to Dynamic Disk using XP, then convert Disk 1 to Dynamic
Disk using Vista now in Windows XP Disk 1 failed to start and i can't import
it, there is a dmio error on System Log, and using Disk Management Console
and Diskpart i have a similar error and can't import Disk 1...

How do I solve this problem?

Thanks.,

Alex