10.5.4 Jammed at spinning gear RAID

After installing the update from 10.5.3 to 10.5.4 the computer got stuck with the spinning gear. It is on a *RAID 1* mirrored array. I had to switch back to 10.4.11, on another RAID 1 set, and +repair the disks+ 10.5.4 was trying to boot from before it could start, restart, and finally boot. Safari 3.1.2 and iTunes 7.7 seem to be fine.

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Hey Guys i have a problem with my mac since last month and it wont boot up it freezes in a grey apple logo and and spinning gear any body know how to fix this?

Hey Guys i have a problem with my mac since last month and it wont boot up it freezes in a grey apple logo and and spinning gear any body know how to fix this?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into Recovery by holding down the key combination command-R at the startup chime, or from a local Time Machine backup volume (option key at startup.) Release the keys when you see a gray screen with a spinning dial. When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”
How to back up and restore your files
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
How to use and troubleshoot FireWire target disk mode
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Before reconnecting an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode.* The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
*Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode. Post for further instructions.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is damaged and the drive is probably malfunctioning. In that case, go to step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see above for instructions.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it produces. Look for the line "Permissions repaired successfully" at the end of the output. Then reboot as usual.
Step 6
Boot into Recovery again. When the OS X Utilities screen appears, follow the prompts to reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.
Step 7
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a backup.
Step 8
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested.

How to go to finder from blank grey screen with apple icon and spinning gear

My Mac desktop won't start up, it showed blank grey screen with an apple icon and spinning gear for ages. Due my computer is vintage so I would need to backup my user files before I could re-install OS X via NetBoot. My question is how can I access to the finder to back up my user folder from the grey screen. Thanks

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

Upgrade from 10.3.9 to 10.4.3 - Problems freezing/spinning gear

Hello and Happy Holidays,
I have an 867mHz Titanium G4 Powerbook w/1gig memory, and the stock 30 gig hd. Recently, I upgraded my OS from 10.3.9 to 10.4.3. Since then, I have had weekly freeze-ups and perpetual spinning gears at startup.
Specifically, the freeze-ups occur after the computer has been asleep over night (no joke intended) and awakened. The only way out of this freeze is to restart the powerbook, which then leads to a continuous spinning gear. After this, it becomes necessary to reboot from the Tiger cd, and repair permissions. Upon concluding this step, the computer is operational once again.
Significantly, in 10.3.9 the computer ran beautifully with nary a problem, so I must conclude that the problem is Tiger–not the Tibook. Anyone with some useful thoughts on this will be greatly appreciated. Thanks.
Glenn
PowerBook G4 867 mHz 1gig ram Mac OS X (10.3.9)

A Tiger upgrade over Panther hasn't been the best way to go.
Clone your exisiting boot drive to a blank external drive using Carbon Copy Cloner (visit their forums)
Next do a Erase w/Zero option your internal and reinstall Tiger fresh (c boot from installer cd and elect Disk Utility from the installer menu)
Update completely and then install Tiger ready apps from fresh sources.
Aviod using Migration Assistant, it misses copy protection and other things, copies blindly, take the time to clean house properly.
Install files from the clone and when your set then erase the clone and make a new clone from your optimal OS install.
Spotlight and Dashboard will take some CPU here and there and is easily disabled using software by searching Macupdate.com
Tiger 10.4.1 has tested to perform better than Panther 10.3.9 in User Interface and CPU (on some machines)

Mac Book Pro Mavericks OS 10.9.5 stops at apple logo with spinning gear.

After working fine for a year, suddenly I cannot get past the apple logo with spinning gear page,
Already tried:
1. safe mode-loading bar disappears 1/3 way through,
2. downloading/reinstalling Mavericks OS-took 4 hours, reboot led right back to same issue,
3. disk/permissions repair - same issue when rebooted
4. Resetting PRAM - heard second chime - same issue

The startup drive is failing, or there is some other internal hardware fault.
Back up all data on the drive immediately if you don't already have a current backup. There are ways to back up a computer that isn't fully functional—ask if you need guidance.
Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
Apple also recommends that you deauthorize a device in the iTunes Store before having it serviced.
*An SSD doesn't need to be zeroed.

OSX Lion, stuck on grey screen at startup w/ spinning gear.

i believe i have tried everything i could find, so any info is good.
about a week ago my 2009 macbook pro 15 inch stopped starting up, always going to a grey screen with the apple logo and spinning gear.
what i have done so far.
reset nvram
repair disk and disk permissions.
try startup with various combinations of periferials
i am obviously able to start into lion recovery, but my time machine backups are on the other side of the world.
when i do a safe boot if stops with two entrys of nstat_lookup_entry failed: 2
any help is much appreciated

You can do two things
1: Install Lion over itself via the Recovery, won't touch your files or most programs.
Any program has a kernel extension file in System/Library/Extensions folder, that will get kicked out. Thus those few programs won't work and require a reinstall of their software
2: Install Lion on a blank powered external Disk Utility > Erase with Zero + GUID OS X Extended Journaled formatted hard drive, hold the option key and boot from it, same named user, and then access your internal drive to recovery files, disconnect then do #1
 Cheat sheet to help diagnose and fix your Mac
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

Gray screen, apple logo and spinning gear hang at start up

after a lengthy round of "bejeweled", i let my imac fall into screen saver mode. when i tried to log back in, i tapped the mouse and the imac flashed as it does when actuated outside a dialogue without clicking the okay button, and immediately returned to screen saver. i then manually shut down and restarted to the gray screen, apple logo and spinning gear hang. i then inserted the leopard install dvd, manually shut down and restarted pressing the option key and selected the install disc. it booted as usual. i selected the language preferred, used the utility drop down menu and selected DU, then selected the hard drive and verify permissions to reveal a pop up "Error: The underlying task reported failure on exit. Permissions verification complete." i immediately selected repair disc, and breathed a sigh of relief with the notification "appears to be ok". then utilities/start up disc/macintosh hd/restart. still get the hang. i have repeated this process several times, also resetting the PRAM as well to the infinite hang. as a matter of fact, the gear has been spinning the entire time creating this post. needless to say, i am truly at a loss. SOS!!!!!!! Please!!!!! SEND LAWYERS, GUNS AND MONEY!!!!

i have perused some of the threads posted per this topic and decided to attempt an "archive and install." i also have a 620gig acomdata external drive with close to a carbon copy of my internal. a few short minutes into the install, the imac reveals a pop up stating it cannot install some files on the hard drive, contact the software manufacturer or restart and try to install again. the internal drive is a 160gig with only about 60gigs of room, so i tried to archive and install to the acomdata instead as it has 180 gig of free space. i get the exact same dialogue once again. restart and a third attempt only archive and install will not highlight, only first time and/or erase and install. further, start up disc shows only the install disc and network as choices. so i attempt first time install on both drives and get the same pop up message again. DU recognizes both drives although verify/repair permissions does not highlight, but not start up disc.
i'm trying not to become frantic, but my patience is threadbare. i am in desperate need of sound advice as to what i need to do.
thanks again in advance,
bradley

My iMac will not boot past the logo and spinning gear

My iMac will not boot past the logo and spinning gear (After a Rogue Amoeba update). I can't access the recovery disk I made on a flash drive. (Am I doing it correctly? - Hold down option while switching on? It just stays on the logo). What (if anything) can I do please?

If you installed Lion onto your machine, it should have created a Recovery HD (hidden from view, but visible in Disk Utility with its Debug menu enabled, under Show all Partitions).
That article states:
Note: In order to create an external Lion Recovery using the Lion Recovery Assistant, the Mac must have an existing Recovery HD.
Would I see the recovery menu (by holding down option on power up)
Yes.
if there was no recovery disc connected do you think?
Shouldn't matter, since your int HD is always connected.

My iMac will not boot up - held shift key - spinning gear does not advance - will not advance to home page??

My Mac will not boot up- advance to desk top- spinning gear keeps on going - white screen with apple logo only???
Held shift key - right after pushing power button

That is typically indicative of either a hard drive corruption or a hardware failure. What happens if you just let the Mac sit forever? Does it boot to a folder icon?
How old is your iMac? You may be able to run Hardware Diagnostics by booting up holding down the "D" key as well.

Brand new MacBook Pro doesn't get past grey screen (with spinning gear)

Hello,
I'm a new Apple customer - I bought a new 15" MacBook Pro during the Black Friday sale last week. Since purchase, I've installed the software I needed (Office, CS4) and have used it to browse the web and write emails.
Today when I tried to use it, I simply got to the grey screen with the Apple logo on it and the spinning gear device underneath - got absolutely no further.
I have done the following (running from mains adaptor - but the battery indicator is reporting 7 lights anyhow):
1. Boot from the OSX Install Disc, and run the disc repair utility. It reported no problems found. Restarted... same problem.
2. Boot holding down SHIFT to go into safe mode. Underneath the spinning gears, a progress bar filled up to 100% and then disappeared; leaving the grey screen, logo, and spinning gears. Nothing further.
3. Boot holding Option, P, R as per the manual to reset the PRAM. According to the manual there should have been a chime/beep - there wasn't. It just sits on the grey screen, logo, spinning gears. Nothing further.
Right now I've got a £1300 MacBook Pro less than a week old and it appears to have just packed up.
Am I missing anything here, or should I just return it?
Thanks,
Chris

Definitely take it back!
My friend bought a new iMac from the Regents St. store a few weeks ago, just before the update to the new models came out, and after a week she couldn't get it to boot. I felt very embarrassed as I had persuaded to her to switch to Mac after years of PC woes, so a broken mac after a week didn't look do me any favours. The genius guys didn't mess around, they took back the dead one and gave her a new one, this time she got the new version, they also threw in iWork free as a good will gesture. New one is running fine.
If you haven't already got Applecare, I highly recommend buying it within the next 12 months. I have needed it on a couple of occasions after the standard warranty ran out and the tech support has been brilliant, got me working again no quibbles.

IMac G5 doesn't go past grey screen with apple and spinning gear

I have an iMac G5 (Ambient Light Sensor) running Mac OS X 10.5.2 Leopard. Last night my computer froze while using QuickTime. I had to force shutdown the computer by holding the power button for 5 seconds after everything else failed.
Now it won't start. I hear the chime, the apple logo on grey screen appears and I see the spinning gear. But it stays like that indefinitely. I can boot with the Leopard DVD with no problem. I verified/repaired the boot disk. I verified/repaired the permissions. Everything is super fine. Made sure the selected startup disk was the correct one. I can even start up in FireWire Target Mode. I've resetted the PRAM and the SMU. Starting in single user mode also works.
How can I solve this startup issue. Are there things I could try before resorting to a archive install or clean install of Leopard. My HD is 232GB and I have 197GB of data.
Thanks for the help.

I opened the back cover according to the instuctions in the manual to check the internal battery (which is fine and strong according to my little battery tester). I followed the steps in the support article "iMac G5: Troubleshooting when your computer won't turn on". According to the LED, my power supply is fine. I turned on my computer with the back cover off using the internal power button. It turned on, chimed, did the usual SuperDrive sound and did a complete boot. I took a peek at the screen by lifting a corner cause it was laying face down on a soft towel on my bed. And I saw the user prompt asking me my password, and the galaxy theme desktop picture. So I turned this off and placed the cover back on. But it still won't start using the external power button. Thanks with all your help Miriam. I'm now gonna look for a solution with the external power button issue.

My iMacG5 will only boot to white screen, gray apple and spinning gear. Help?

My iMacG5 will only boot to white screen, gray apple and spinning gear. Help?
Also not totally sure if it's an Intel based computer, but that's what I recall. Any way to check, since I can't get to About This Mac window?
It's running on OSX Leopard 10.5.4
First symptom = running slowly - then it kind of froze with color wheel spinning - thought a forced shut down would help - help power button til off, then white screen, gray apple and spinning gear.
Have tried...
1. Turn off the computer by choosing Shut Down from the Apple menu, or by holding the power button until the computer turns off.
2. Unplug all cables from the computer, including the power cord.
3. Wait 10 seconds.
4. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer.
5. Let go of the power button.
6. Press the power button once more to start up your iMac.
Then try booting from your install disc again.
- No change
And...
Booting From An OS X Installer Disc
1. Insert OS X Installer Disc into the optical drive.
2. Restart the computer.
3. Immediately after the chime press and hold down the "C" key.
4. Release the key when the spinning gear below the dark gray Apple logo
appears.
5. Wait for installer to finish loading.
- The fan just got louder.
Thanks for your help.

You need to do an Erase and Install or an Archive and Install depending on whether the hard drive is OK or needs to be reformatted.
Start by booting from your Leopard DVD. The rest is just following directions.
How to Perform an Archive and Install
An Archive and Install will NOT erase your hard drive, but you must have sufficient free space for a second OS X installation which could be from 3-9 GBs depending upon the version of OS X and selected installation options. The free space requirement is over and above normal free space requirements which should be at least 6-10 GBs. Read all the linked references carefully before proceeding.
1. Be sure to use Disk Utility first to repair the disk before performing the Archive and Install.
Repairing the Hard Drive and Permissions
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 Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) 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. Now restart normally.
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. Do not proceed with an Archive and Install if DU reports errors it cannot fix. In that case use Disk Warrior and/or TechTool Pro to repair the hard drive. If neither can repair the drive, then you will have to erase the drive and reinstall from scratch.
3. Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When you reach the screen to select a destination drive click once on the destination drive then click on the Option button. Select the Archive and Install option. You have an option to preserve users and network preferences. Only select this option if you are sure you have no corrupted files in your user accounts. Otherwise leave this option unchecked. Click on the OK button and continue with the OS X Installation.
4. Upon completion of the Archive and Install you will have a Previous System Folder in the root directory. You should retain the PSF until you are sure you do not need to manually transfer any items from the PSF to your newly installed system.
5. After moving any items you want to keep from the PSF you should delete it. You can back it up if you prefer, but you must delete it from the hard drive.
6. You can now download a Combo Updater directly from Apple's download site to update your new system to the desired version as well as install any security or other updates. You can also do this using Software Update.

My mac shows a grey screen and spinning gear and nothing else. please help! i want my mac to work again :/

My mac needed new updates and after clickign update it soon told me there was an error and it froze. I then let it sit fo about 15 minutes adn nothign changed so I restarted it and ever since then all my computer will show is the grey screen and a spinning gear :/ can anyone help me with this problem?

I had the same issue, and I had recently backed-up my files (mostly because the mac was acting wonky before this even happened), so I did an erase and install. Then I ran through all the software upgrades and installed all of them. When I did a required restart (for the Mac OS X 10.4.11 update) it went BACK to grey screen with spinning ball. Talk about frustrating!
I think there is something weird going on with the iTunes update and the Mac OS X 10.4.11 update. But one can't be used without the other. So I'm not sure how to update everything safely and get an up to date system, without having all the problems I had before. So now I'm using Mac OS X 10.4.7 so I can have a stable system to do my work, but I can't run iTunes 7.0. I'm too scared to update OS b/c I can't waste another day re-installing everything (for like the third time).
I'm a pretty new Mac user (year and half) so this may sound really dumb, but any suggestions would be very welcomed. I may start a new thread instead of hijacking this one...

My imac starts up with a white screen, gray apple and spinning gear and is frozen on that screen. What can I do?

my imac starts up with a white screen, gray apple and spinning gear and is frozen on that screen. What can I do?

Start your iMac with the original DVD that camera with the system. Then open disk utility and repair your hard drive, also repair your permissions.

Imac won't start white screen apple icon spinning gear

imac won't start. when turn on, I just get a white screen with apple icon and a spinning gear below the apple icon. what should I do to get it started and fix the problem? Thanks.

See if any of the suggestions in this link help:
http://support.apple.com/kb/TS2570

10.5.4 Jammed at spinning gear RAID

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