I think your only hope of doing this with check boxes is to find a file manager with the feature. You should be able to remove read only attribute on all files on a drive from the command line using an administrator command prompt. Just CD to the root as in
CD \ <enter>
attrib -r *.* /S <enter>
But obviously I'm not going to test it on my system since there's a couple hundred thousand files to mess with if something goes wrong.
If you have more than one partition in the command prompt just enter the drive letter
with a colon to change drives
to go to drive f etc..