TQ for your concern. but this is not the case.
ubercake :
In explorer, you have to change the view to 'Show hidden files, folders, and drives'.
Open windows explorer
Press the alt key to make the menu you're used to seeing (from XP) visible
Click 'Tools'
Click 'Folder options...'
Click on the 'View' Tab
Under 'Files and Folders' in the lower window, uncheck the 'Hide protected operating system files (Recommended)' box
Under 'Hidden files and folders', choose the 'Show hidden files, folders, or drives'
Click the 'Apply to Folders' button and you will be prompted as follows:
'Do you want all folders of this type to match this folder's view settings?'
Click 'Yes'
Click 'Ok'
Above will give you access to see files and folders.
but this might be helpful to unlock the locked folders.
ubercake :
To see things in the 'Documents and Settings' folder or 'Users' folder, you have to grant members of the local administrators group full control access to the folder under the security tab for a folder's properties.
Now, i think this is the proper answer for locked folders.
■How to Take Ownership in Windows 7
■1. Locate the file or folder on which you want to take ownership in windows explorer
■2. Right click on file or folder and select “Properties” from Context Menu
■3. Click on Security tab
■4. Click on “Advance”
■5. Now click on Owner tab in Advance Security Settings for User windows
■6. Click on Edit Button and select user from given Change Owner to list if user or group is not in given list then click on other users or groups. Enter name of user/group and click ok.
■ 7. Now select User/group and click apply and ok. (Check “Replace owner on sub containers and objects” if you have ■files and folder within selected folder)
■8. Click ok when Windows Security Prompt is displayed
■9. Now Owner name must have changed.
■10. Now click Ok to exist from Properties windows
■Once you have taken the ownership of file or folder next part comes is Granting Permissions to that file/folder or object.
■How to Grant Permissions in Windows 7
■1. Locate the file or folder on which you want to take ownership in windows explorer
■2. Right click on file or folder and select “Properties” from Context Menu
■3. Click on Edit button in Properties windows Click ok to confirm UAC elevation request.
■4. Select user/group from permission windows or click add to add other user or group.
■5. Now under Permission section check the rights which you want to grant i.e check “Full Control” under the “Allow” column to assign full access rights control permissions to Administrators group.
■6. Click Ok for changes to take effect and click ok final ok to exit from Properties window.
■Now you can access files of folder in windows 7 with full permissions and take full control.
n this is answer to the system files such as application data nearly as zander1983's answer
■Microsoft does not explain to the user that many of these files and folders which are seemingly locked and do not come up in third party search engines are actually "Hard Links." (i.e. symbolic links, or junctions.)
■It is my understanding that they are very similar to shortcuts with more power. So I can't open "Application Data" because its not there! It is a junction to C:\ProgramData, put there for older programs that reference XP's old path.
an answer from a customer and microsoft's support engineer
Thanks ubercake & zander1983
Now. how do i select the best answer? hopefully there's an explanation with the 'XP's old path references'