Imac won't boot after 10.6.8 update

Not sure where to start with this...
Just tried to boot after the latest 10.6.8 update and have the grey screen with the spinning disk.

I would suggest that you do the following as a start:
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
If the drive is OK then download the Mac OS X 10.6.8 Update Combo installer and reinstall the update. See if that resolves your problem.
If the above does not fix the problem then you will need to reinstall Snow Leopard:
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

Similar Messages

IMac won't boot after power outage

I got a power outage a couple of hours ago. And now my iMac won't boot. When I power it up, it gets pass the white screen with the apple logo. The screen than turns blue with a spinning cursor. The cursor spins for about 10-15 minutes and stops but the normal login screen never appear and it won't boot into the desktop either. I just got a blue screen.
I have boot into the install Disc1 and did the disk repair and premission repair but it didn't help.
Any idea?
Sidney

Oh man, what a disaster!
I tried to do an Archive and Install but the installation hanged at the end of disc 2 after running an iWeb script (according to the install log) with about one minute left. I have waited for two hours but it just hanged there with all the drives spin down.
To make the problem worse. There was no way to quit the install at that point because all the menu items were disabled. The only way out was to power off. But when I powered it back on, it booted right into install directly asking for the disc 2. If I put the disc in it will install again and hang at the same spot.
Disc 2 contains iLife. I know Apple wanted to make things simple but why can't they give me an option to skip it? After all, iLife was already installed.
I finally got it working by booting from disc 1 and did a clean install. It took me all night to re-download all the updates and reinstall many applications. Fortunately, I have my address book, calendar, and most of my works backed up to .Mac so it wasn't a total lost.
On the bright side. Now my iMac is working better than before. I used to have problem getting auto sleep to work but now it works perfectly. Safari also had problem accessing charts (but Camino was fine) in a few web sites like schwab.com. Now everything works.
Lenn and David. Thanks for all your helps.
Now I am looking for a better backup solution so that the recovery won't be this painful if disaster strikes again. Any suggestions?
Sidney

IMac won't boot after trying to migrate files to macbook?

While trying to migrate info from my IMAC to my Macbookpro all work froze on both puters. Macbook starts and runs alright. But my IMAC won't boot at all. Tried startup disc and it won't get past picking a destination because it doesn't list one. I made a boo boo hear and need help fixing this.

Drive Preparation
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install OS X.

IMac won't boot after power failure during 10.5.6 update

Help!
Tried to update last night and at something like 80% install, we had a power cut. iMac won't boot at all now - get to a grey screen which tells me to restart. Don't have a wired keyboard. If I did - what are the steps to get this working again.
I believe I have a good backup, but don't want to risk as all the family photos are on the iMac.
Thanks in advance.

Thanks for the help, but can't even get to a screen where I could type anything! I know I'm being dumb here.

Computer won't boot after installing latest iTunes update

Won't boot after the apple screen. Turns black and disk stops Help! Was running Mavericks.

Hi Neodoc,
Welcome to the Apple Support Communities! I understand that your MacBook Pro will not boot past the Apple logo. There may be a few troubleshooting steps I would recommend for this situation. The following article outlines the steps to perform to get this resolved for you.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
I hope this helps,
-Joe

My Mac Pro won't boot after installing the latest update

Im running the latest OSX on my mac and recenty did a small updated that i believe contain a few security thing and bug fixs but when restarting the machine after the update it would not boot again after the apple logo has appeard apple script is displayed on the screen contain what i think is boot script failing to run. I have been able to boot the system in safe mode. does anyone have and solution for this as i realy don't want to reinstall the OS
Thanks

The most common cause for "Won't boot after software Update" is Directory Damage that existed before the Update, but was made worse by adding files during the Update.
The most common cure for that Directory Damage problem is to boot in Safe Mode, which takes five minutes to repair the disk, then comes up demanding your username and password, even if you normally auto-login.
Rarely, third-party add-ons are made obsolete by an update. In this case, booting in Safe Mode (with few Apple extensions and NO third-party extensions loaded) works fine, even if normal mode does not work.
Have you tried normal mode again after your Safe Boot?

Imac won't boot after update

hi guys i am new to macs I bought this for my daughter and tried to update.The update said to hold the program button and push power,well now she won't boot up just a grey sreen and what looks like a file with a blinking question mark and a face..
I have a imac g3 400mhz with 256mb ram
osx and 9.2 i belive any help appreciated

The flashing folder icon is your iMac's way of saying, "where is my OS? I can't find an OS!" If this appears briefly and goes away, it's usually because the PRAM was reset recently. The 4.1.9 firmware does reset your PRAM in the process--but only if successful in its task. To fix this temporary hiccup, open the Startup Disk control panel and select the hard drive, then click Restart.
If this icon continues to flash, there are some steps you can try.
1. Reset the PRAM via Command (Apple)Option+PR at startup. Hold the keys down until the Mac chimes thrice. If your Mac starts normally after the third chime, end here.
2. Reinitialize the firmware. Enter Open Firmware mode (CommandOption+OF) and issue the following, pressing Return after each command:
reset-nvram
set-defaults
reset-all
If successful, the Mac should reboot itself. Stop here if this solves the problem.
3. If you have the iMac restore disc, or a disc with OS 9.1-9.2.1, boot it and run Disk First Aid from the Utilities folder to repair file structure errors. If you have DiskWarrior or TechTool Pro Classic, you will be able to do more thorough repairs.
4. If all of the above fail, you can reinstall OS 9 if you still need to do the firmware upgrades, but you should reinitialize the hard drive with Drive Setup if you also want a clean install. Drive Setup can be found in the CD's Utilities folder.
Nate

IMac won't boot after Lion install

I have an Intel iMac circa 2007/2008. I just installed OSX Lion on it. After installation, the computer would beachball frequently and eventually froze completely. I had to do a hard-reset as the system was completely unresponsive.
Now the computer won't boot up. It gets stuck at the grey screen with an Apple and a spinner at the bottom.
Please help; this computer runs my small business.

How much RAM is installed? Lion will run much better with at least 4 GBs of installed RAM.
I would guess you updated from Snow Leopard and that Snow Leopard was not in good shape. Reinstall Lion to see if this fixes things for you:
Reinstalling Lion
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alterhatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

IMac won't boot after iTunes Match - Get diskos2 i/o error. Help!

So after almost 24 straigth hours up uploading songs to iTunes Match, I woke up this morning and my iMac wouldn't boot. Gets stuck on the gray screen with the apple logo. I booted in verbose mode keep getting a "diskos2 i/o error." With a little googling some people say it's a bad sector and to erase and reinstall Lion others say it's a failing hard drive. Disk Utlity in Recovery Mode says the drive is ok. Any thoughts out there on what I should do? Thanks!

I am having the same problem. The machine loads just to the point when it says "Loading Mac OSX", then its non responsive for hours. The keyboard and mouse still work, but it won't move past that point.
When I try to repair the disk, it gives me an error message indicating that the disk cannot be repaired. I am bad at backing up my files, so I want to avoid a fresh reinstallation.
The worst part is I had just purchased Disk Warrior, and that won't boot up.
If no solutions are found, does anyone know a way that to initiate the computer in disk mode, so I can hook up another Mac to it, and save all the files?
-alfredo

IMac won't boot after ram upgrade

For some reason, my iMac late 2013 3.4Ghz quad core i5 won't boot with new ram modules added. New ram is exact same specs as original that came with the iMac. I've tested the new ones on their own in the iMac, and the system boots up fine. Same goes with just using the original ram. But when I put all 4 together, the iMac doesn't boot up. Not even the chime.
Combinations I've tried are:
1-Old
2-New
3-Old
4-New
No boot
1-New
2-Old
3-New
4-Old
No boot
1-New
2-Old
3-New
4-empty
No boot
1-Old
2-New
3-Old
4-empty
No boot
1-New
2-Old
3-Old
4-New
No boot
1-Old
2-New
3-New
4-Old
No boot
The only combinations that work are:
1-New
2-empty
3-New
4-empty
Boot good
1-Old
2-empty
3-Old
4-empty
Boot good
I just got off the phone with Apple, and they are saying all modules have to be the same size. ie. all 4GB or all 8GB. Can't mix and match sizes. Which is strange, because I've never heard of this. My Mac Pro has different speed ram modules, with different sizes in it. As long as I install ram in pairs, it runs like a charm. I've even heard the new iMacs don't have to have ram installed in pairs.
I'm wondering if slot 2 and 4 are maybe damaged? I haven't tried using just slot 2 and 4. To my understanding, you have to use 1 and 3 first. Can anyone confirm this?
Also, I've read a couple of people had to wait 30 seconds for the chime when they installed new ram in their iMacs. I didn't wait 30 sec to see if it would boot. Never heard of any Mac taking 30 sec to just chime in. lol Has anyone else experienced this? Is there a fix? Tx.

CLICKY CLICK---> iMac: How to remove or install memory
Or
Apple>About This Mac>More Info>Memory: Double click "Memory Install Instructions" at the bottom right of window.
my iMac late 2013 3.4Ghz quad core i5
Conflicting info. Your system profile shows: Mac Pro, Mac OS X (10.6.8). Please update/correct.

IMac won't boot after updates,have to reinstall loin from recovery drive

I have a 27" iMac running 10.7.1 and love it, but every time I do a software update it won't boot, it just goes to white screen with spinning gear forever! I let it set there for an hour and it never changed. I've tried restarting it but it just stops at that point,so I have to restart holding cmd-r to go to the recovery partition and have it reinstall loin,i've tried reparing the drive and perrmissions but it still wont boot unless i reinstall loin. I have five other macs running loin with no problem, so why just my imac?

Hopefully you have AppleCare. If so, call Apple to see if this if you are afflicted with the dreaded motherboard problem.
BTW, this area is for discussing iMac G4s. Since you have an iMac G5 you will probably want to make future posts in the iMac G5 discussion area.

G4 450 MP won't boot after 10.4.8 update

My main disk is a 160Go on a PCI IED card (acard)
After Software update did its thing, the computer won't boot on this disk.
It displays the apple logo, then nothing (no spinning thing). There are display artifacts (blanck line on top of screen, sometimes the grey background turns blue)
I tried zapping the PRAM, reinstalling the combo update, removing third partry cards to no available.
I tried plugging the disk on the integrated IDE channel (but I know my computer does not support disk larger than 120 Go)
Any one has an idea ?
G4 450 MP Mac OS X (10.4.7)

I verified and repaired permissions on both disks, updated the new system to 10.4.7 and ran Migration Assitant, which, aside from giving wild estimates of time remaining and not copying the Developer folder, did indeed work magnificently. Not going to bother with cloning back to the original drive.
Gulliver:
1)Umm, yes, I didn't bother repairing permissions before updating to 10.4.8, but the only way to know if that caused the problem is to try updating the new system. I'm not that curious. I think scb is not impressed with repairing permissions.
2)Removing 3 PCI boards and swapping the processor and then putting it all back together everytime there is a system update is not an option. Besides, if it doesn't work with the 3rd party hardware, then I wouldn't want to bother updating anyway. Next time, I'll try updating on another drive first.
Anyway, everything is running well again. Thank you for your help.

Early 2008 Macbook won't boot after 10.7.5 update?

Updated to 10.7.5, when it rebooted to do the install, there was an error message, and now the machine won't boot. Stuck on grey screen with spinning wheel.... reset PRAM, Disk utility says drive is OK... still no luck. ??
Looks like this has hit the news. Any update from Apple? I would take it to the apple store, but there's a mob becuase of the new iPhone, so..... yea.
Apple, please fix this. And bring back Google Maps to IOS while you're at it.

Updated to 10.7.5, when it rebooted to do the install, there was an error message, and now the machine won't boot. Stuck on grey screen with spinning wheel.... reset PRAM, Disk utility says drive is OK... still no luck. ??
Looks like this has hit the news. Any update from Apple? I would take it to the apple store, but there's a mob becuase of the new iPhone, so..... yea.
Apple, please fix this. And bring back Google Maps to IOS while you're at it.

Mac Pro new update won't boot after 10.8.2 Update 1.0

It just stays on the apple screen during boot after entering pw for account.
Its been over 5 min that it just stays in that screen. Anyone else seeing this after doing 10.8.2 Supplemental Update 1.0?

Reinstalling Lion/Mountain Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Powerbook G4 won't boot after 10.4.10 update

Hi,
Looking for help with the following problem. Last week, I updated my Powerbook G4 to 10.4.10 and since then the system fails to boot. The failure may or may not be linked to the update, but the timing is suspicious.
When I attempt to book the system, it hangs with the spinning daisy wheel at the gray screen with the apple logo. It won't boot from the Tiger install DVD; doesn't seem to get as far as looking for the DVD.
If I boot into single user mode and run fsck -fy, the command reports a number of block count errors when checking the catalog file and then fails while a "disk0s3: I/O error. Invalid key length (4, 20821).
I don't want to lose the data in disk if at all possible and I'd like to know;
(a) can this be repaired using a more powerful disk utility such as DiskWarrior?
(b) is this worth taking to the Genuis Bar for further work?
Thanks.

*Invalid key length* indicates a disk directory problem that should be fixable with DiskWarrior. To boot with the install DVD, pop it in, restart, holding down the C key. If that doesn't boot the machine, leave it in, restart, holding down the OPTION key, and see if it shows up when the Startup Manager finishes loading. If so, click on the DVD icon and click the right-hand arrow. The left=hand arrow will search for bootable disks, which it already did.

Imac won't boot after 10.6.8 update

Similar Messages

Maybe you are looking for