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You are here: MacNN Forums > Software - Troubleshooting and Discussion > macOS > MacCrash None Others Permission Issue

MacCrash None Others Permission Issue
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Fresh-Faced Recruit
Join Date: Apr 2013
Location: England
Status: Offline
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Apr 11, 2013, 07:51 PM
Hello Everyone, Can anyone helped me pleeeeeeease?

I just learned how to crash my mid-2007 Black Macbook by switching ''Others'' ''Read Only'' permissions to ''None'' via the Mac HD Info window after foolishly presuming that it might avoid the machine being hacked due to a Yahoo account of mine having been hacked recently.

I've been going round in circles for the past few days trying to figure how to re-set the 'Others' permissions back and have gone through all the standard procedures I could find but kept getting the same outcome, i.e,

The machine boots chimes then a grey screen displaying the apple icon appears
then the screen turns blue and the wheel turns round - then disappears for a second - then comes back again and endlessly repeats like it's stuck ...?

I've tried booting from the orig install disc (Leapard OSX 10.4) and neither that or re-setting the perimeter ram or booting in safe mode or trying to boot the macbook in Target mode to boot from my (pre intel) G5 tower - via fire wire worked. Just keep getting the Grey/apple icon screen then the blue screen and turning wheel.

Today I found this excellent (macnn) site and a discussion about the problem I'm experiencing



While I was trying to get my head round the discussion and unix code - I thought I should try removing one of the 1GB ram chips from the black macbook to check if that made any difference?

I removed a 1GB ram chip, put the battery back, then I started up the macbook and after the chime I pressed: option control s the screen turned black and what I think is called the terminal or the shell window appeared and white text scrolled down the page -

yippee signs of life

can anyone advise what I should type to cause the ''Others'' option to revert back to

''Others Read Only'' Please?

The Black Macbook is running Leapard OSX 10.5.8 (after updates etc)

Clinically Insane
Join Date: Nov 1999
Location: 888500128, C3, 2nd soft.
Status: Offline
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Apr 12, 2013, 05:11 PM
Just pressing and holding "s" upon boot chime should bring you to that black screen with the white text, a.k.a. Single User Mode.

When you're there, type

mount -uw /
And hit return (there's a single space before the slash; it's important.

then type

chmod o+r /
and hit return.

That should do it.
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