Hey all over the last year, i went from Windows 7 to Windows server 2008 R2, and now back to windows 7. I'm using the same username and password in each. i have several hard drives with content that are supposed to remain completely separate from the OS, but had certain access restrictions on them. Today, i found out that a lot of my pictures from the last year are unable to be opened or viewed. They list S-1-5-21-(really long number here) as the owner, which i recognize as being the registry entry for a user on a previous install of windows. For whatever reason, these pictures, and several other files, are now locked down and can't be opened, throwing out an error saying they are corrupted or damaged. i know this isn't the case as a few of these files were opened up/added during the windows server 2008 R2 install. i've tried taking over as owner on some of these files, but it simply doesn't work. it's almost as if the file was encrypted with the owner info. i dare not change any more, less i loose access completely. i did have the sense to install windows 7 on the hard drive only after i made a backup of the previous drive, however i'm not sure if i can extract the user to gain access to these files again, and i am similarly not sure i can "reactivate" that drive to be able to run server 2008 long enough to fix the permissions. anyone have any ideas? This almost feels like an EFS issue.