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AppleJack 1.6 for Snow Leopard System
AppleJack has been updated to work with Snow Leopard with the release of version 1.6.

In a nutshell, AppleJack is a command-line utility and series of scripts for running repair tasks in Single User Mode when a bootable startup disc in not available. It's great for those times when all you get is a blue screen and no GUI startup, and need to troubleshoot and repair the problem, but left your complete CLI reference book in your other suit.

To use it, bring up Single User Mode by holding down Command-S at startup and then when the prompt is available type applejack. Use the menu provided or select 'auto pilot' to perform all of the basic tasks, such as filesystem and permission repair, cache clearing, and more. There is an 'Expert mode' available by typing 'x' at the AppleJack prompt to do more operations on the hardware and user accounts. Documentation is provided in a Man page; type man applejack for that.

This version supports 10.4 and up. Since Apple usually changes things under the hood with each major OS release a tool like AppleJack has to be updated for compatibility, so older versions didn't function properly in 10.6.

For more details, there was an excellent review of the previous version on Macworld. This will give you a good feel for this tool.

[crarko adds: I tested this, and it works as described. I swear by AppleJack, and am delighted it's finally 10.6 friendly. Just remember it needs to be installed before you have trouble, and not after the fact.]
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AppleJack 1.6 for Snow Leopard | 11 comments | Create New Account
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AppleJack 1.6 for Snow Leopard
Authored by: appleman_design on Jul 13, '10 08:23:09AM

Nice product.. save me all kinds of troubles in the past...



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AppleJack 1.6 for Snow Leopard
Authored by: agentx on Jul 13, '10 08:33:59AM

Great news a very useful tool that has been missed on Snow Leopard.



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AppleJack 1.6 for Snow Leopard
Authored by: horkstow on Jul 13, '10 09:36:50AM

I love AppleJack. It has got me out of several difficult situations, and serves as a reminder that poking around below the GUI is not as difficult or frightening as you might think.



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AppleJack 1.6 for Snow Leopard
Authored by: asmeurer on Jul 13, '10 10:29:17AM

Another tip: When you install it, choose customize and select memtest. This will install a memory testing tool, which can be accessed from the expert mode.



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AppleJack 1.6 for Snow Leopard
Authored by: gmachen on Jul 13, '10 02:09:06PM

Applejack says repair disks, in the *plural.* Does that mean it will automatically repair all attached external disks? Repairing anything but the bootup disk is difficult to do manually with fsck, involving determining the volume mount name with other commands. Is Applejack doing all of this?



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AppleJack 1.6 for Snow Leopard
Authored by: Thomas_U on Jul 14, '10 01:14:52AM
on the sourceforge-applejack-forum the developer has already clarified that disks (plural) is a typo that he has corrected: disk. https://sourceforge.net/projects/applejack/forums/forum/271611/topic/3769264

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AppleJack 1.6 for Snow Leopard
Authored by: gmachen on Jul 14, '10 08:37:37AM

Thanks, Thomas U. Actually, the thread you mention was started by me yesterday, right before I came here with the same issue. (I suppose that, strictly speaking, that makes me guilty of the breach of netiquette known as cross-posting, but in my defense I wouldn't have done so had not this thread greeted me upon my arrival here on the same day; I think this question is of such importance and of particular interest to readers here that you all otherwise may have missed it.)

I urge everyone to follow Thomas U's link, because the developer in his reply moreover goes beyond the call of duty and spells-out the complete procedure for determining all external hard disks extant and how to make fsck repair them while booted in single-user mode. Very handy to have in one's bag o' tricks.

Edited on Jul 14, '10 09:13:09AM by gmachen



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AppleJack 1.6 for Snow Leopard
Authored by: DCJ001 on Jul 13, '10 06:43:06PM

I'm sure that Applejack does not repair any attached external disks.

Although, if anyone disagrees or has any additional information to add, please feel free to do so.



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AppleJack 1.6 for Snow Leopard
Authored by: sjonke on Jul 14, '10 07:18:42AM

I nearly jumped for joy when I saw this was released. Peace of mind in a box right here. It's repaired problems for me on many an occasion in the past. Every Mac should have it.

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AppleJack 1.6 for Snow Leopard
Authored by: er3l on Jul 20, '10 04:45:13PM

HUZZAH! if you don't know, applejack is a great first line utility that clears up a lot of the small things that start going 'off.' i've been using it for several x's.



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AppleJack 1.6 for Snow Leopard
Authored by: prepressking on Aug 22, '10 02:14:23AM

Applejack F&%$@in' rocks! I have been able to fix countless problems with this excellent tool. It should be included as an installable option on the OS X OEM Install!!! Thanks for this! It's the best!



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