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Punkyclown's picture
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Joined: 2017 Nov 9
Macintosh HD Locked?

Hi all, while trying to make some changes on my PowerBook 1400c I found the my Macintosh HD drive is locked. And I can find no way to unlock it, or why it's locked or how it became locked.  Is there someone out there who could help me on this issue? I am running MacOS 9.
Thank you
Brad Hansen

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natelifornia's picture
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Joined: 2010 Jul 29

I'm guessing you've already checked the Get Info box for the hard disk to see if you can uncheck it?

Punkyclown's picture
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Joined: 2017 Nov 9

Yes, of course I did.

MikeTomTom's picture
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Joined: 2009 Dec 7

Not sure if this still applies to Mac OS 9.x but check the Control Panels' "General Controls" CP to see if the settings for "Folder Protection" have been enabled (check box checked) for "Protect System Folder" and "Protect Applications folder". If so, uncheck theses boxes.

RogerWilco's picture
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Joined: 2018 Nov 19

I had this issue on my Power Mac after running Basilisk II with a version of the Mac OS that didn't support HFS+ (OSX and OS 9 could see each other's volumes), the solution I came to was simply that I had to backup, reformat, and reinstall.

Protocol 7's picture
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Joined: 2010 Aug 7

I think this is usually caused by a corrupt or missing DesktopDB file. Disk First Aid or any other repair tool should be able to fix it.

Punkyclown's picture
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Joined: 2017 Nov 9

Hello, I ran Norton Disk Doctor on my Mac, it found minor errors
and corrected them. The I load the 7.5.3 cd and made it my startup
device. Loaded the system then tried to erase my Macintosh HD drive
and received the message "The drive can not be erased because it is Locked"
Brad Hansen

24bit's picture
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Joined: 2010 Nov 19

Did you already try a low level formatting utility?
Be prepared for a long waiting time, if you get it going.
Be sure to backup any needed files before touching the hard disk.
http://macintoshgarden.org/apps/fwb-hard-disk-toolkit-253
http://macintoshgarden.org/apps/lido-756

SUM II may be worth a try too:
http://macintoshgarden.org/apps/sum-ii-symantec-utilities-macintosh

Punkyclown's picture
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Joined: 2017 Nov 9

Protocol7, 24bit, and All, thanks for all the great support. So I started from the System 9
cd, then Ran Disk first aid. After which while still in that app went to options chose "Erase"
and I was able at that point to erase my drive. So it was simple in the end just the right
combination of CD and function.
Brad Hansen

sfp1954's picture
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Joined: 2013 Dec 29

Don't forget.
If you initialize a drive HFS+ (using 8.0 Disk Tools/CD or above), it shows up as locked in 7.5.5 and below and cannot be accessed. You would need to go back and initialize it as standard HFS with whatever floppy or CD you used.