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I denied all the permissions for users(Mypc\users) group in security tab for one of my drives. My drive is inaccessible now, even in Administrator user thesecurity tab is in invisible too. how can I grant the permission again to my drive??

Edit: Drive D: and E: enter image description here

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You need to take the ownership first to Administrators group before you can have access to the permission list. –  Jay Oct 20 '12 at 8:52

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up vote 1 down vote accepted

Try this:

takeown /f <drive> /r /d y


icacls <drive> /grant administrators:F /T
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I tried it but it just works for one of my drives. for the other drives (D:,E:) I encounter access is denied error.I run command prompt with Run as administrator. –  Raymond Morphy Nov 16 '12 at 21:32
What type of drives are D and E? –  Keith Nov 19 '12 at 13:46
They are NTFS drives. what to do?? –  Raymond Morphy Nov 19 '12 at 20:55
Ensure that you use these commands from a command prompt using Run as Administrator –  Bryan Nov 19 '12 at 21:33
I use these commands from a command prompt using Run as Administrator'. but I encounter Access is denied` error. –  Raymond Morphy Nov 20 '12 at 20:06

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