For future reference (hello Google!):
I've just experienced an extremely annoying problem when trying to access a removable hard drive from a new Windows 7 system. Long story short: when trying to open an image file, I got this error message:
"Photo gallery can't open this picture because you do not have permission to access the file location".
I was still able to copy the file(s) to another drive and open them, but browsing thousands of images, this was not a practical solution, to say the least. I was able to set permissions and access a single file at a time, but finding a way to change the ownership and permissions for an entire disk was surprisingly difficult. So, for future reference, here it is: I fixed everything by running the following two commands from an elevated command prompt (i.e. "run as administrator"):
takeown /R /F *
icacls *.* /reset /T /C
This will take ownership and permissions for all folders and files located below the current folder. Just make sure that the root folder (e.g. e:\photos or whatever) has the correct owner and security permissions. The solution - which worked perfectly - is described in more detail here: http://forums.techguy.org/windows-vista ... -need.html
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