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invalid checksum error installing Mac OS X update 10.4.3

I just downloaded all 109 Megabytes of Mac OS X update 10.4.3 Combo, and when I open the file, I get this message:

The following disk images failed to mount:Mac OS X 10.4.3 Combo

Reason: Invalid checksum

Posted on Nov 7, 2005 4:08 PM

Reply
13 replies

Nov 7, 2005 5:36 PM in response to Rod Hagen

Thanks Rod.

After looking over the other posts, I'm wondering whether it's just as well that I couldn't install it. I can't find any information that gives me assurance that the update won't do wicked things to my new iBook and require me to make complex repairs requiring high levels of expertise and external hard drives, neither of which I have.

Can anyone direct me to a source for clear directions enabling a casual user to safely install 10.4.3?

Nov 7, 2005 7:02 PM in response to Anthony Hertzler

Hi Anthony,

I've installed the 10.4.3 update on three computers - an imac G5, a PB 12 and an iBook g4 12", and on two external hard drives, without any problems at all.

Don't forget that this place is an "emergency" ward, and the apparent plethora of complaints and cocnerns is really very small compared to the total installation base for something like this. There are millions of Macs out there in the real world!

Try the following ten steps for trouble free installation:

1) Make sure you have plenty of free space on your hard drive. Don't try installing on a computer with any less than 5 gigs free - preferably more.

2) Download the "combo" version of the OS updater from http://www.apple.com/support/downloads/macosxupdate1043combo.html (the combo updater is usually the best bet, even though it is larger, because it helps overcome problems that might occur if an earlier update has gone badly, or if people have deliberately or indavertently messed around with their existing system related files)

3) If you don't usually leave your computer running overnight, then download and run a copy of the free "MacJanitor" or another program that can run the daily, weekly and monthly unix housekeeping tasks. These are normally run automatically in the wee small hours of the morning if the computer is on and awake, and there are ways of doing this without aditional software, but programs like MacJanitor make it very simple to do at a time suitable to you.

4) disconnect all peripheral devices - printers , external drives, scanners, etc etc, but leave the power adaptor connected. (don't want to risk running out battery while doing this sort of stuff)

5) check your hard drive before doing the update using Disk Utility while booted from your iBook or Tiger DVD (you can boot by putting the dvd in the drive and then restarting while holding down the c key , or by holding down the option key and then selecting the DVD as the startup disc before pressing the continue arrow ).

Once you have booted from the DVD select "Disk Utility" from the "Tools" menu on the menubar.

Now highlight your HD in the left hand panel of the Disk Utility window and click on "repair disk" (not repair permissions at this stage).

Disk Utility will check the directories on your drive and make any repairs necessary if it can. If, by chance, it says that there is a problem but it can't repair it, then don't continue with the update process, use your computer as little as possible. and post back here.

6) Once Disk Utility has given your drive a clean bill of health then use its other option "repair permissions"

7) Shut down your iBook completely. Start it up in the normal fashion (ie booting from the HD).


8) run the 10.3.4 Updater

9) restart your computer. This restart may take a little longer than usual - in my case one of my computers took a couple of minutes longer than usual, and I have seen some people reporting substantially longer periods of time - up to as much as 30 minutes, so be patient if necessary. The next restart will be normal.

10) Once you are sure everything is running fine, then you can plug your peripherals, if any, back in.

Then post back here and tell us how smoothly it went! 😉

Its a good idea to perform the tasks mentioned in points 3 to 6 every few weeks anyway, even if you aren't updating your OS.

One other sthing that may be worth considering is turning off any "background" virus checking software if you have it installed, as this can sometimes interupt, or slow down, installation processes. If you use it , remove AllumŽs "Internet Cleanup", too, which can cause problems under Tiger.

Cheers

Rod

Nov 7, 2005 7:13 PM in response to Anthony Hertzler

That sounds like super advice, Rod. Unfortunately it's too late for me. I did the upgrade last week and have been trying to recapture Spotlight and Finder search capacity ever since. I've repaired permissions any number of times. Even the genius at the Genius Bar had no luck making Spotlight find anything below the first tier. I've tried to reinstall the update but it won't go.

What can I do?

Nov 8, 2005 5:41 PM in response to Rod Hagen

Rod, this is finally something I can make sense out of.

This computer is my first Mac, and what I have been reading here has been reminding me too much of the Windows XP SP2 update, also a huge update which the automatic updater would find and cheerfully invite you to install, without informing you that you should only install it if you (1) are a power user who knows computers inside and out or (2) are not planning to use your computer after the update or (3) are prepared to spend three to five hours on the phone with a tech support representative learning how to do a clean install and hours more reinstalling all your third-party programs.

I will try this stuff, and if it doesn't work I can always come back here and cry some more. Thanks a million.

Nov 10, 2005 10:15 AM in response to Anthony Hertzler

I downloaded the two updates Gulliver recommended, and installed the smaller one, but the Java update didn't go, and I didn't feel like downloading it again.

So I downloaded and ran MacJanitor, repaired the disk, repaired permissions, downloaded the 10.4.3 updater again, and installed it. No problems. It took maybe a little longer on the first restart, that was all.

The great thing is that Help Viewer, which stubbornly refused to work properly in spite of all the advice I tried from this forum, is all better since the update. Thanks for your help. I am a wholly satisfied Mac convert once more.

invalid checksum error installing Mac OS X update 10.4.3

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