Since I last looked at DiskLock (sec review, May '90, page 97), Fifth Generation’s security program has made impressive progress. It’s still easy to use and sports some significant improvements.
To set up DiskLock, you start with an installer that places an INIT in your System Folder, You must also install the DiskLock DA, the program’s front end, and drag FolderLock, a bundled utility, onto your hard disk. Restart your Mac, and you’ll be prompted for the password that you specified during installation. You can't bypass this password prompt by starting up from a floppy.
The DiskLock DA lets you lock the drive when you leave your desk or shut down your Mac. You can configure DiskLock to auto-lock your Mac at shutdown, after an idle of a specified period of time, or if your Mac crashes. The DA also accesses FolderLock so that you can lock and unlock programs, files, and complete folders. You can set the DA to automatically close open files when you shutdown.
The main improvements in this latest version include the ability to do background processing (a spreadsheet can be recalculating while the disk is locked and you are on break), protection from the trashing of locked files and folders, and DES support for people patient enough to use this encryption method (DiskLock also supports proprietary — and faster — encryption methods).
On the negative side, the program is still not as integrated as it might be. You have to run a different bu tidied program to change the disk password or view the DiskLock log. You should be able to perform these tasks through the DA in much the same way that you access the file-locking controls of FolderLock.
DiskLock is basic in concept but probably more than adequate for most people. It doesn't offer customizable user levels, administrative functions, or a hierarchy of privileges, but it docs keep the contents of your hard drive private — and it docs so with ease.
Wasson, Gregory. (March 1991). DiskLock. MacUser. (pg. 88).