If you don`t want others to access the different partitions and hard drives in your PC, there`s nothing better than using No Drives Manager. This small program can be downloaded for free, and hides the partitions and hard drives simply and effectively.
The program interface shows all the letters that could be your hard drives, and just by selecting one or more of them, it is possible to hide them in the Windows Explorer.
Despite being hiddden, No Drives Manager doesn`t block them, just deletes some entries from the Registry, so that system explorers won`t show them on-screen.
Just by highlighting any drive and pressing the No Drives Manager button you can show them again. Also, to avoid security problems you can password protect the program.