I thought this would be a simply task of removing the hard drive and putting it a HDD caddie and attaching it to another computer
I have done this several times and it works perfectly.
I had full access to all saved data on all partitions.
Similar in on notebook with two HDDs.
I have Satellite A300 with two HDDs inside. On one HDD I’ve installed WXP and on another Win7.
Each OS can “see” saved data on other HDD.
Maybe is there some problem with HDD or with HDD caddie.
Have you tried to connect this HDD to other notebooks to see if the problem is the same?