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I have set up Windows 7 and Windows 8 dual boot. From Windows 8, users have access to my Windows 7 C:\ drive and all its files, including files in C:\Users\username\ How to take care of this?

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up vote 2 down vote accepted

You could go to Disk Management (search "Administrative Tools" on the Start Screen in settings, then choose Computer Management, then Disk Management), right-click the Windows 7 drive and choose Change Drive Letters and Paths. Remove all letters from this drive and it will become inaccessible.

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Try the following:

  1. Reboot in Windows 7 and log in under an admin account.
  2. Run the command prompt cmd as Administrator.
  3. Type the following commands

    takeown /F C:\Users\user_name /a /r /d y

    cacls C:\Users\user_name /t /g Administrators:F System:F (Type Y and press Enter to the prompt "Are you sure")

    cacls "C:\Users\user_name" /e /t /g "user_name":F

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Just change the security settings. Right click on the folder -> Properties -> Security tab

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