When you upgrade a previous version of Windows to Windows 8 with the format+clean install option, you might have a “nice” surprise of being unable to access the files you previously saved on another partition of your hard drive. By default, Windows OS locks the permissions to the previous owner of the files. What you have to do is change the permissions for the respective files while logged with the Administrator account.
Here is a simple tutorial on how to do this task.
1. Right click the drive or the folder you want the security permissions changed.
3. Click the Security tab on the dialog box.
4. Click the Advanced button as shown below
5. Select the user you want to change the permissions in the Advanced Security Settings panel and click Edit. In case no Edit button shows up, click the Disable Inheritance and click Convert Inherited Permissions Into Explicit Permissions On This Object.
6. Give yourself full-control over the folders and files as shown below.
Now Windows 8 changes the permissions for the files and folders you selected; this process could last longer so don’t turn off your computer or close the dialog box while in progress.
Did this work for you? Please comment if you encountered any difficulty.