[ghost] changed drive letters in Win 7 after Ghost 11.5 on triple boot system

[BatchFile]

I've made up a triple boot, 3 partition image for the machines in one of our labs that is used by adult education so that the students (most of which are over 70) can use whichever OS and / or Office version they have at home, so we've got XP, Vista and W7.

 

XP (sysprepped) and Vista (not sysprepped but given an "imaging" name) work absolutely fine once mini setup runs on XP and screws the boot settings, I fix it with bcdedit /import, and I log into vista to give it a new machine name and disconnect / reconnect to the domain.

 

BUT

 

7 doesn't fare so well, despite being fine on the machine I've taken the ghost image of the whole disk off, it sits at "please wait" for half an hour or so then invites you to log on. From there it decides it's not activated, won't let you activate it, then it dies. On investigation it seems that it's changed the drive letters, somehow so that nothing works once windows has started. It seems that in Win 7, it calls the boot disk C, when on the machine it came from it's E.

 

How'd you fix that without messing up the other two OS's then? I've tried DiskPart (having booted to a safe mode command prompt) and it won't do it as it's the boot disk . I don't want to boot PE and do it in case I screw the other two up... any ideas??

[BatchFile]

Less wordy rephrasing of the question:

 

How do you change the drive letter of the boot disk in Windows 7?