Late 2009 21.5 Inch iMac not updating to Snow Leopard 10.6.4

I recently took my Late 2009 21.5-inch iMac (1TB HD) to the Apple Store to get it fixed due to a hard drive crash. I got the hard drive replaced and I thought everything was back to normal. Today, I saw Apple had released a beta for FaceTime on the Mac. I downloaded this, started to install it, and it told me I was missing a critical security patch (2010-005). I ran software update, and it said all my software was up to date, so I went to apple.com and downloaded it directly. It started to install and when I got to the hard disk destination, it told me that my hard drive (Macintosh HD) doesn't meet the system requirements. Well, I looked up the requirements, and the only requirement was Snow Leopard 10.6.4. I went into about my mac from the Apple menu and saw that I was running 10.6.3. This confused me further because I had run software update, and I suspected software update would catch an OS update. Anyway, I went to apple.com to download Snow Leopard 10.6.4 directly since software update didn't catch it. I choose the combo pack first, and I didn't have any luck installing it. It did the exact same thing the security update did. I got to the hard disk destination, and it told me the volume didn't meet the requirements. I then tried the regular update and got the same results. Starting to get confused, I checked what the requirements were for Snow Leopard 10.6.4. The only requirement was to have Snow Leopard 10.6.3. This is where I don't understand what's happening. I am already running 10.6.3. Since that was the only requirement, shouldn't I be able to install it? Please help me out. I'm SUPER confused. Oh and sorry if I'm rambling a little. I'm trying to be as descriptive as possible to get this fixed. Thanks in advance.

Alright. I finally got 10.6.4 installed. I ended up reinstalling Snow Leopard from the install disk like originally planned. The problem was that when Apple replaced my hard drive, they preinstalled a Mac Mini version of Snow Leopard on to it which was up to date for that piece of hardware and is why software update didn't catch the update. However, since I have an iMac, it got confused because it was running a Mac Mini version of OS X, thus not letting me install 10.6.4. After I wiped the drive and installed from the disk, I ran software update, and, sure enough, the 10.6.4 update was there. I thought I would just share my findings for everyone out there with the same problem. And thank you baltwo for all of your help. I appreciate it.

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Is there any way to use a late 2009 21.5 inch iMac as an external screen for an early 2011 MacBook Pro?

Hi there,
I'm trying to work out if there is any way that I can use my late 2009 21.5 inch iMac (running OS X 10.6.8; mindisplay port) as an external or second monitor when connected to my early 2011 13" MacBook Pro (OS X 10.6.8; thunderbolt).
From what I've read online, I gather that I cannot simply connect the two with a minidisplay port to thunderbolt cable, as the iMac does not support target display mode. I know I can 'share screens', but this doesn't give me much of an improvement on size compared to just using my MacBook.
Are there any other potential work arounds I might have missed? Any suggestions (or even conclusive answers to suggest I'm wasting my time by continuing to think about it!) would be much appreciated.
Many thanks!

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Now, my iMac is so slow, and freezes up so much, that I basically can't use it.
If you have any peripherals connected to your computer, disconnect them. iMac still slow and freezes up?
How large is your hard drive and how much space do you have left.
Disconnect all peripherals from your computer. Boot from your install disc & run _*Repair Disk*_ from the utility menu. To use the Install Mac OS X disc, insert the disc, and restart your computer while holding down the C key as it starts up.
Select your language.
Once on the desktop, select Utility in the menu bar.
Select *Disk Utility.*
Select the disk or volume in the list of disks and volumes, and then click *First Aid.*
Click _*Repair Disk.*_
Restart your computer when done.
Repair permissions after you reach the desktop-http://docs.info.apple.com/article.html?artnum=25751
easyNAT thing I talked about earlier showed up in the processes, but it took up 0% of the CPU. *I still have absolutely no idea what that is.*
It's also a plug-in. Spotlight search your hard drive for easyNAT. If you download Find File or Easyfind, your search will be made easier. Both utilites can be found at Macupdate.
I've never downloaded anything like that
Anybody uses your computer besides yourself?
I was planning on taking it to the Apple store this weekend, but it would be preferred if I could fix it myself.
If you have Apple Care, give them a call. Let them do what you paid all that money for them to do.
If your iMac is still under its one year warranty, take full advantage of it before it runs out. Especially, if you do not have Apple Care.
Could it be a virus?
No. There are no viruses for os x.
Sorry I've been rambling for so long.
Rambling is good. The more details we have from you the easier it is to help with troubleshooting. So speaking for myself, thank you for rambing.

Ive just upgraded my late 2009 macbook, and things are not working properly. First of all, when I started the computer first time after installing Mountain Lion, some message advised me that some files were impossible to install.

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We're sorry.
We can't find the article you're looking for.
Please return to the Apple Support homepage.
Sigh.

Can I use my late 2012 model 27 inch, iMac as a Playstation 3 display?

Can I use my late 2012 model 27 inch, iMac as a Playstation 3 display? if so, how so? i just bought my imac 2 weeks ago and its the newest imac today

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Can any one help me to solve the problem?

Zap the PRAM and Reset the SMC, then try again.

I have a older MacBook I upgraded memory two 3 gb from its original two but it still will not let me update from snow leopard to maverick I have plenty of available ram does anyone know why

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http://support.apple.com/kb/HT4479
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MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)
MacBook Pro (13-inch, Mid-2009 or later), (15-inch, Mid/Late 2007 or later), (17-inch, Late 2007 or later)
MacBook Air (Late 2008 or later)
Mac Mini (Early 2009 or later)
Mac Pro (Early 2008 or later)
Xserve (Early 2009)
iCloud system requirements:
http://support.apple.com/kb/ht4759
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@ least turned if off for troubleshooting purposes.
turn home sharing off on both computers, and make sure
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turn home sharing back on on both Macs.
does it work ?
JGG

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My 2010 iMac will not boot in Snow Leopard, only Windows. Have tried reinstalling Snow leopard a few times and works only for a couple of minutes before freezing and doesnt reboot. Windows works perfect. Snow leopard just doesnt want to boot up past the Apple Logo. It was working fine one day and the next day it froze up and was able to reboot back into Snow Leopard but kept freezing. Now it doesnt load at all into Mac OS.
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Possible scenarios:
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2: Your not using the 10.6.3 SL retail disk but one from another machine which doesn't have the drivers for that machine.
3: Your optical drive is funky or some other hardware issues.
4: Your trying to install 10.6 onto a PowerPC based Mac, no can do.
5: Your not using a wired keyboard for boot key commands, have some other hardware conflicts.
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http://www.brokenhomeboy.co.uk/pierow/blog/2011/10/make-a-bootable-backup-snow-l eopard-install-disc/
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3: Mountain Lion 10.8 is reportingly coming out this summer and will not run on a lot of older Intel based Mac's because of heftier graphics requirements.
4: 10.6 has the widest range of current avaialble software and drivers for third party hardware.
My advice, stick with 10.6.8 and stay there, buy a new Mountain Lion machine after this summer. Skip Lion completely.

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Go to the website for your printer manufacturer and check if there are SL compatible drivers available for your model. This is not an unusual issue, and if the printer's not too old, the updated drivers should be there.
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At your end you can verify your connection is active and working. If you are using wireless then try using an Ethernet connection instead.

Acrobat Pro Not Working after Latest Update to Snow Leopard

After getting the latest update for Snow Leopard I get the following when Acrobat tries to boot:
Process:         AdobeAcrobat [157]
Path:            /Applications/Adobe Acrobat 9 Pro/Adobe Acrobat Pro.app/Contents/MacOS/AdobeAcrobat
Identifier:      com.adobe.Acrobat.Pro
Version:         9.0.0 (9.0.0)
Code Type:       X86 (Native)
Parent Process: launchd [77]
Date/Time:       2010-03-31 11:25:30.253 -0600
OS Version:      Mac OS X 10.6.3 (10D573)
There is more after this but the summary is that it doesn't boot. Is anyone having this problem also? And if so how did you fix it.? I have tried uninstalling and reinstalling Acrobat but with no success.
Thanks in advance.
David

BBfolgart wrote:
Hi Michael,
Thanks for your reply. However how can you upgrade when the program won't boot? I tried downloading again from Adobe but the version that comes over is 9.0. Is there anyway to force a load? Or anyway for Adobe to push me 9.3.1?
Regards,
David
First try removing preference and or .plist files for Acrobat. Then when you get working try this tip below that might help when you update the application and it fails.
I've come across this in these forums That may or may not solve the update issue for "some" people:
<http://forums.adobe.com/message/2692924#2692924>
see if you think. it helps.

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Try this Safari5.1 from the installer package
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Late 2009 21.5 Inch iMac not updating to Snow Leopard 10.6.4

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