Hi and Welcome![QUOTE=Marylander;1995479]
I was installing linux on an XP PC and I am not sure what happened but my HD partitions changed[/quote]This is normal since Linux needs its own partitions on the HDD.
and I can not access all MY Documents as they are lost somewhere on the HD.
I moved this HD to be a slave and rebooted the PC with another HD.
Since any write attempt to that HDD may make things worse, connecting such a disk to a Windows system isn’t a good idea at all.
Is there a way to retreive my files from an unpartitioned area of this HD?
Restore them from your backup.
No backup? Then I’d suggest contacting a data recovery specialist like Ontrack or similar, if you aren’t experienced enough.
You might also create a 1:1 copy of the entire HDD (the Linux command dd is good for that, run from Knoppix or another Linux Live CD) for own experiments with the partition table.