Date: Fri, 11 Aug 89 09:59:48 PDT
From: Brian Bechtel <blob@apple.com>
To: info-mac@sumex-aim.stanford.edu

LockDisk is a cdev that changes your system disk (the one from which
you boot your Macintosh) to read-only status and back to read-write.
Your disk maintains this status even if rebooted.  This can be handy in
many ways:

*       CD-ROM discs are read-only.  You can test such things as
		Hypercard stacks to make sure that they run on
		read-only media.

*       You can't get a virus infection on a read-only disk.

*       Kids can't (logically) destroy your hard disk.  No promises on
		physical efforts...

*       Trade shows.

LockDisk cheats and goes behind the Finder's back.  Use it with a
certain sense of caution.  Poorly written programs get very upset if
they are run on a read-only disk.   They can crash.

This ISN'T Apple-sponsored software; I wrote it on my own time.  Don't
blame them for my bugs.

--Brian Bechtel		blob@apple.com		"My software, not Apple's"



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