AppleJack
AppleJack
1.6

4.5

AppleJack free download for Mac

AppleJack

1.6
13 July 2010

Troubleshooting/repair utility.

Overview

AppleJack is a user friendly troubleshooting assistant for Mac OS X. With AppleJack you can troubleshoot a computer even if you can't load the GUI, or don't have a startup CD handy. AppleJack runs in Single User Mode and is menu-based for ease of use

Using AppleJack, you can repair your disk, repair permissions, validate the system's preference files, and get rid of possibly corrupted cache files. In most cases, these operations can help get your machine back on track. The important thing is that you don't need another startup disk with you. All you need to do is restart in Single User Mode (SUM), by holding down the command and s keys at startup, and then typing applejack, or applejack auto (which will run through all the tasks automatically), or applejack auto restart (which will also restart the computer automatically at the end of the process)

What's new in AppleJack

Version 1.6:
  • Snow Leopard compatibility [feature 2845796] (Thanks again to Steve Anthony)
  • Improved limits on output from syslog to STDOUT
  • Simplified startup of services on Leopard and Snow Leopard
  • Fixed bug in creation of user account lists in Snow Leopard where system accounts would show up
  • S.M.A.R.T. status verification is now being done in the expert mode. I still want to implement this using smartmontools, but for now diskutil will do.
  • Blessing of Mac OS X System folders on attached volumes is now possible. This is a primitive bless, ie, it does not create boot files, but simply blesses the chosen System folder and (optionally) sets it to be used for startup on next launch

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213 AppleJack Reviews

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Dklawless
09 October 2009

Most helpful

AJ Users (all thousands of you), Having used this application for years I can recall numerous times that this untility has save me countless hours of work. I just visited the developers site to find out he is in the same pinch as he was with the move to OS10.5. He is strapped for money to develop the update to Snow Leopard . Listed as FREEWARE he will accept donations. Please consider a donation to help him. It won't take much to fund a solution. EX: an external hard drive and Snow Leopard. The link is: . R/ Deaner
Like (17)
Version 1.5
artie505
21 January 2019
Even though Applejack appears to still clear caches, I'm skeptical about the job it's doing, because Apple has added, deleted, and moved caches over the years. I'm sure it's doing something, but I doubt that it's what people think it's doing.
Like (1)
Version 1.6
artie505
21 January 2019
Although Applejack's website links to SourceForge for v 1.7, SF delivers v 1.6. Anybody know what's up with that?
Like (1)
Version 1.6
Eric•Woehler
22 July 2017
Just installed 1.7b as per posting etc below, working under Sierra 10.12.6 - but unable to repair permissions (I suspect framework MIA due to Apple) and removing the swapfiles function doesn't work, but deep clean still deep cleans and other functions also working, so was glad I spent the 15 minutes getting this installed (1.6), upgraded (1.7b) and working. Longest time was spent triple-checking script attributes/permissions with BatchChmod to make sure I didn't have to re-login as root.

Instructions below by sickteddybear re installing and replacing 1.6 with 1.7 very good.

Just type 'applejack' in singe user mode (cmd-s) after the system text has fllled several screens and choose from specific options (1-5) or run 'Auto'.

Once done, hit 'r' to restart your Mac. sweet!
Like
Version 1.6
1 answer(s)
headgap
headgap
11 October 2018
Perhaps a stupid question. Why doesn't someone put up the modified version 1.7 for download?
Like
Zarquon
25 November 2016
Just tested under macOS 10.12 Sierra after installing the 1.7 update described below by SickTeddyBear, and it works great. No need even to type in the path; simply type "Applejack" in Single User Mode, and everything works as expected, except for Repair Permissions, which is no longer needed anyway.
Like
Version 1.6
3 answer(s)
zorino
zorino
23 July 2017
Hey, where can I download 1.7 update ?
thx.
Like
Zarquon
Zarquon
04 February 2018
As I said, see the instructions below from sickteddybear.
Like
Zarquon
Zarquon
04 February 2018
Or not, as those instructions seem to no longer work.
Like
kbootsyb
07 October 2016
I ran Applejack. To run parts 3 & 5 to clean the Cache and the memory, you need a apple password. I bought the computer used and don’t have the Apple ID or Apple ID’s from the previous owner or owners. Can I get around this so I can run these two parts of the program? Thanks…
Like
Version 1.6
Svenster
01 April 2016
This really is an amazing product. 6 years after it ceased being updated I found myself in a situation where my laptop running OSX 10.11.4 and my mouse arrow lost its ability to left click on anything. rendering the input unavailable. No input devices had left click functionality. Not the Trackpad nor any usb mouse connected to it. And this was the issue across all logins. It was a bit of a problem. Now I was a seriously heavy user of AppleJack also on every computer i have managed. But I haven't even booted into it with this OS before. So I fired it up and run the remove cache routine and checked for corrupt preferences and asked it to reboot. And it did and the issue was resolved!! Quite an amazing product.
Like
Version 1.6
fwilkinson
02 November 2015
shit
Like
Version 1.6
1 answer(s)
darkwing52
darkwing52
30 November 2015
I forgive you your ignorance. Applejack still has significant value. I maintain dozens of Macs. Even up through El Capitan it is easy and convenient and effective.
Like (3)
Tlance
10 October 2015
Still works on El Capitan! (Not performing permissions step.) Must enter path yourself at prompt: /private/var/root/Library/Scripts/applejack.sh
Like (1)
Version 1.6
2 answer(s)
artie505
artie505
04 January 2016
AppleJack can't possibly be doing a good job in any version of OS X since the developer announced that he could no longer keep up, because there have been many substantive changes to the names and locations of caches, as well as new caches in obscure locations and with names that wildcards couldn't begin to catch added to the mix.

I've always considered deep cache cleaning to be AJ's most important feature, and without it, it's not AJ any more, and I think that anybody who's taking it at its original face value is fooling hirself.
Like
lalicata
lalicata
15 January 2016
I must be really stupid but how to use applejack in deep clean mode system 10.10. I KNOW to enter the path, but then how do I get it to shift to AUTO (deep clean mode)? I have never known how to do a deep clean mode manually but that is also OK. And, If I put the applejack.sh file at the root of the "root" user, do I need to type the whole path? (I tried but could not get applejack to load so thought I missed something.) Thanks for listening.
Like
Ward
16 March 2015
I just discovered I overlooked installing AppleJack on my new iMac running 10.10..2. I'm now faced with choosing between the formal 1.6 release from 2010 or the "untested and unreleased" 1.7 update offered by Negritude on Oct 28, 2013 (see below). Which should I pick?
Like (1)
Version 1.6
Penguirl
22 February 2015
Applejack and DiskWarrior were my go to utilities, I even skipped 10.7 just so I wouldn’t lose the use of Applejack. Now many people are saying that it still works through 10.10 but I have to wonder if it is completely safe and here is why: I remember with each new upgrade (vs update) version of OS X would be followed by an update to Applejack. I never upgraded until the corresponding v. of Applejack was released. And after 10.6 the developer said (paraphrasing here) he could not keep up with all the under the hood changes with each new version of OS X so he was going to stop development of Applejack. So if the developer couldn’t keep up with the continuous changes in OS X for whatever reason, and ended development for that reason, how can it possibly still be safe to use?
Like (2)
Version 1.6
1 answer(s)
Tlance
Tlance
12 March 2015
Simply because no one has bothered to tweak it so the bit of code (that lets you get to applejack) loads at startup doesn't mean it's not safe. Surely you have at least one, preferably several, backups. Go ahead. try it. I've been using it on several machines with no issues.
Like