I have an external HDD and several SSD. When I use WinXP all OK.
But I start use Win7 and when I move my storage from one computer to another I can not enter to directories and access to file which copied on another Windows.
Issue come from fact that SIDs become invalid on new host and coping process does not grand full access. So I restricted from getting access to files and directories!
I make workaround. But it is ugly all time run this scripts for any new copied files...
You can found my scripts at https://sourceforge.net/u/gavenkoa/utils/ci/tip/tree/win/uac/
Briefly:
cmd# takeown /r /f %CD% cmd# icacls %CD% /grant:r *S-1-1-0:(f) /t /c