G4 won't boot past grey apple screen

Hi. I have been having the same issues with my G4 15". I'm frustrated. The whole thing started with stalling during applications. So I decided to reinstall my OS X 10.5. After reinstall, I copied my saved files from my "My Book" drive back to my hard drive. Stalling issues returned. I reinstalled again. still had some stalling issues, so I performed disk utilities. I repaired permissions. SMART status is verified. System still ran extremely slow. So, I followed directions on apple support for resetting the PRAM and NVRAM. After I did this, the computer won't boot past the grey apple screen. I have reset the PRAM and the NVRAM again. Still nothing. I rebooted up from OS install disk. I performed disk utilities repairing permissions and repairing HD. I did this for both my drive and the computers drive. I choose restart and again the grey apple screen. I have been trying to get this thing going for a week now. I'm near tears. Cornelius or anyone, can you help me? It says no errors are found, SMART is verified. But I can't get the computer to boot unless it is from the CD. Is the computer confused on where to boot from? Or is it shot? HELP ME PLEASE, before I play frisbee with my dear beloved mac!!!! It seems like this ALL started happening after I installed the update 10.5.8. I had ZERO problem prior to any software updates!!!

There have been report of some external drives/enclosures that do not work as a boot device. Not sure if the MyBook is in that category or not, just make sure that there is nothing else plugged into the Powerbook then try again.
Does the WD need its own power to be plugged into an AC power source? Try the other firewire port
I have one more question for ya... You were able to load OSX on this EHD using the OSX install disk in the Powerbook? And the installer saw the EHD with no problems?
If non of the above works try booting while holding down the x-key, this should force it to look for an OSX volume, not sure if it works the same on an EHD but worth a shot.

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Another G5 iMac won't boot past grey Apple screen!! HELP!!!

Last night I tried to put my iMac to sleep. it took about 3 times, and it finally went to sleep. Today I tried to wake it up but I got the little spinning disk, and it would not wake up. I could not restart it from the screen, so I pulled out the power cord as I have had to do a few times in the past with no problems. Today when I plugged it back in it got to the grey Apple screen, but no little progress circle. I waited & waited, nothing happened so I cycled power again. This time I got the progress timer circle, but again after about 20 minutes nothing happened. I then put the install disc in and booted from that. Tried verify disc, but it failed saying it could not un-mount the volume. Tried verifying permissions, but it seemed to get stuck with just a fraction left on the progress bar, so I quit & tried again (basically where I'm at now). I have also noticed that if I choose the "start up disc" (while running from the disc) the only thing that shows in a network icon. My HD does not show up as an option. For about the past 5 months I have noticed my HD has been a bit noisy. Kind of a whirling sound that seems to get louder then quiet down & repeat....not real loud, but loud enough so I have noticed it. I have been worried that something like this might happen.
update: while repairing permissions I just got a "Disc utility error" says Disc utility has lost it's connection with the disc management tool and cannot continue. Please quit and relaunch Disc Utility. This is the same message I got the last time I tried to run it. I also have an OSX Leopard install DVD...should I be starting from that disc, or the install disc that came with it? If I should be using the newer disc, how would I get the other disc out of the machine?
So....am I up the creek with out a paddle, or is there anything I could try?
any advise would be greatly appreciate as ALL my data is on my iMac and not this POS PC I have to use now.
Thanks,
Jeff

Using Target Disk Mode is an excellent, idea, you should be able to drag your data on to the new machine.
Let us know how you made out,

Powermac G4 (OS 10.4.11) won't boot past grey apple

1- My PowerMac G4 (running OS 10.4.11) won't boot past the grey screen with the apple. Any suggestions?

I found somewhere else how to hold down the mouse on starting, which opened the tray. I was able to startup with the disk, holding down the C and get to the Disk Utility window. Tried repairing the disk, but got this message:
Fist Aid failed:
Disk Utility stopped verifying "Macintosh HD" because the following error was encountered:
The underlying task reported failure on exit. <OK>
and in the info window it says,
"Verifying volume "Macintosh HD"
Checking HFS Plus volume.
Catalog file entry not found for extent
The volume needs to be repaired.
Volume check failed.
Error: The underlying task reported failure on exit (-9972)
1 volume checked
0 HFS volumes verified
1 volume failed verification
Sounds pretty ominous! Of course, the recommendation is that I backup everything , but how can I if I can't get to the desktop to back it up? (It hasn't had a lot of use for sometime, but is available as a film scanning station, and so that I can access scanned images on my iMac. I doubt that there is a whole lot on the drive that isn't backed up, but I would prefer to back it up for sure!)
Thank you again.

MacBook Pro: Tiger wont boot past grey apple screen w/ spinning gear, HELP!

Hey everybody,
I have a 1.83 Ghz MBP with 512 mb of RAM (lame I know). The other day someone was using my computer to burn a CD on iTunes when all of my programs began failing. On instinct I rebooted my computer to solve the problem. Alas, now I cant boot past the grey apple screen, and the gear is spinning away. Saddest part of the story is that I had time set aside to back up my computer the day after this happened . Anyway what is the best thing to do from here? I haven't made any moves to fix it yet really, so what is the best thing that I can do to try and get my files back?
Thank you,
Sam A.

Hi, I posted to you in yoour other thread.
I very much doubt Disk Utility or fsck will fix an +Invalid Node Structure+ error. That's a pretty serious error and DU is just not robust enough of a utility to repair it.
If Disk Utility can't fix it, you'll need a more robust utility for the repair. I would recommend DiskWarrior. It is the best at directory repairs. It rebuilds then actually replaces your old directory. I feel every Mac owner should have a copy. Make sure you get the disk so you can boot up on it to run repairs. You can also install it on another drive and run it from there to repair this one. DW works faster that way.
I use DW once a month to try and catch errors in my system from getting too far out of hand.
If you have a good backup, hopefully a clone of your system before you had issues, an Erase and Install will also rid you of this issue. But, beware! You will lose everything on the drive with this procedure. Let us know if you need help with that!
Cheers! DALE
p.s. If the +Invalid Node Structure+ is real bad, there's a risk even the mighty DiskWarrior will not be able to help. Normally it will come thru; it's only in the severe cases it won't be able to do it. If you don't have a backup, and need the data bad, it's worth the try!

Power mac G4 450 won't boot past grey apple

I took trusty old Power Mac G4 450 (PCI graphics) apart for a week to paint the office. I put everything back together as before including a lot of old SCSI peripherals, but when I start it up, the fans run, i get the chimes, but it will not boot past the apple on the grey screen. I tried a safe boot, disconnecting everything but monitor & keyboard, & resetting the pram. The battery was replaced about 8 months ago. It had been freezing a lot before this, & I considered replacing it, but all I need it for is to run an old SCSI flat bed scanner that I'd like to hang on to. Any ideas?

Hi-
Will it boot to the OS X install disc?
If so, use Disk Utility to "Repair Disk" on the start up volume.

Macbook won't boot past main apple screen

I was using my computer this morning (13" black Macbook that I've had since December) and it was working fine until I closed it to go get something to eat.
When I got back and opened the lid again, the screen was black, as if it was off, but I could make out the outline of the Apple logo in the centre. So I turned it off, gave it some time and turned it back on. Now it won't boot past the main Apple screen, where the little timer thing spins and spins and spins while apparently nothing else happens.
I left it alone for a couple of hours, thinking maybe it was overheated, but that didn't make a difference. I tried taking the battery out and restarting it, but that didn't work either. I called Apple, but my parents opted for Future Shop's warranty instead of Applecare, so they told me to search the website as "the issue is well-documented," since I have no tech support with them.
I've searched around to see where this is posted or if it's been answered a billion times before, but it's 35C in here, and my rage/frustration are ruining my ability to be rational, haha.
Anyone experienced this before / is there a resolution that doesn't involve me being without my computer (which is like sweet, sweet crack to me) for an undisclosed amount of time?
Thanks in advance,
Emy
Oh, and I'm not sure about the operating system version beyond that it's OSX and I regularly install whatever updates they tell me to.

Maybe Disk Utility can repair the disk this way:
-Search your installation DVD's.
-Insert the disc 1 and sthut down your Mac
-Start your Mac again while holding down the C key
-Now your Mac should boot from the CD, this can take some time.
-After a while you will see a installation screen where you can chose a language.
-Chose English and continue.
-Then click some time's next and agree with the "Software Agreement".
-Open Disk Utility. Top menu bar --> Utilities --> Open Disk Utility.
-Select your hard disk in the list of disks and volumes on the left side
-Go to the First Aid (tab somewhere on the right).
-Click the button to verify the permissions.
-Then Click the button to repair the permissions.
-Click the button to verify the disk.
-Then Click the button to repair the disk.
-Exit the Disk Utility

G5 wont boot past grey Apple screen and spinning cirlce

I cam in to work this morning and found my Mac on with fans blazing the the display just showing the grey Apple screen and spinning circle. I have it set to turn on before I arrive at work and it has been doing so flawlessly for all the years I've had it. When I shut down last night everything was working fine. Now this.
I've scanned some help forums but can't quite determine what the cause might be. Old battery on the memory card, a bad memory chip, ...I'm not sure.
As I said, things had been working flawlessly for years.
I've tried unplugging and re-plugging in the power cord (nope), resetting the PRAM (didn't work), Pressing the PRAM button on the memory board (again no), resetting things from Open Firmware (Using these commands: reset-nvram, set-defaults, reset-all -- no luck)and now have Disk Utility repairing permissions from the install DVD. That doesn't seem to be doing anything, it has been "Determining correct file permissions" from my startup disk for about 20 mintues now...usually it goes a lot quicker.
Any thoughts? This is my primary work machine and if I can't get it running I'm dead in the water. I'm accessing these forums from a PC in the office and would rather not have to, hahah.
Thanks.
(also, when running permission repair, do you repair the volume or the primary disk? I'm repairing the named sub-volume of the hard drive.)

(also, when running permission repair, do you repair the volume or the primary disk? I'm repairing the named sub-volume of the hard drive.)
I repair the hard drive that contains the Startup volume, unless multiple partitions are present.
In that case, only the startup volume.
Rather than "repair permissions", "Repair Disk" is what you should run on the startup volume.
Troubleshooting:
http://support.apple.com/kb/TS2570
http://support.apple.com/kb/TS1417
Reseating the RAM and graphics card may also be helpful.
If you get the machine started again, install Applejack for future help:
http://applejack.sourceforge.net/

Macbook won't boot past grey Apple logo.

Hello! My mother's unibody white MacBook will not get past the grey apple and spinning gear when you first boot up the computer. This was after she opened a link in an email from a friend who had her email compromised. Now I'm getting spam emails with the same link from my mother's hacked email, and her computer won't even get to the login screen. I took it to the genius bar only to be told it was likely HD failure, but the windows partition works without a hitch! What could this be? A trojan? Is there any way to retrieve data (really just pictures) before I attempt to reinstall OS X?
Thanks!

P.S. The one or two times it did get past the mentioned screen, it moved it horribly slow speeds. It took near an hour to get the spotlight feature to open!

MacBook Pro Won't Boot Beyond Grey Apple Screen - Mystery Partition Found

My MacBook Pro, which suffers from appalling overheating (94 degrees C in each core last week) won't boot beyond the grey apple splash screen. I booted from a Developer's disk and ran Repair Disk/Disk Permissions. Both verified AND said the repairs failed. The drive (as opposed to the volumes) said it had no valid files and thus couldn't be repaired even though it verified. I target-disked it to one of my G4s and took off a bunch of apps and lightened its load, waited a while and tried again--it's been grey screen gear turning for 20 minutes now. I have Remote Desktop but it won't respond to that. Of course, Windows XP boots up perfectly normally on its Boot Camp-created partition, dumbly unaware of the general chaos on the other side.
While I had the Disk Utility from the boot disk on, I noticed my partition scheme had changed somehow. The big partition with the system was now in position #2, set between #3 (Windows--formerly #2 of 2) and a new one of only 200MB called #1 which is formatted OS X Journaled. I didn't make that partition and it couldn't be erased. I think the cpmputer is looking in the #1 spot for a system and can't find it because some renegade partition with no brain has pushed its way to the front. How do I annihilate that thing and get on with it? How did it get there?
Has anyone tried that alter the Apple Blower/Fan hack said to turn the fans on permanently?
For the record, I'm in L.A. and the ground has been rocking and rolling for the past 3 minutes on and off.
MacBook Pro 2.0/2GB/100GB Mac OS X (10.4.8) TiBookG4 1.0/512K/60; PowerMacG4 Quicksilver 933/1G/160; PowerMacG4 450/512K/30

I called Apple's Tech Support and they had me do perform sevral procedures I had done already, none of which worked. They suggested that the mystery partition (which has since ceased to reappear in the Disk Utility's view of the partition scheme) was an anomaly caused by the still-Beta Boot Camp--nothing was said about Windows XP booting, but I think you're right because whenever installing Windows, it always reserves a small "free space" on the PC's drive for its own purposes. Anyway, I'mre-installing now but very unhappy to hear I have suspected all along--the overheating is killing the computer. I know this from experience because Ihad a Powerbook G4 with a at-that-time-not-yet-recalled battery that overheated to such an extent that it fried the logic board and the harddrive. After a year of arguing with Apple, they replaced the computer with this MacBookPro--and overheating laptop that also had its battery recalled, has already been sent back to Texas for over heating (they replaced the superdrive which of course had no effect on the heat issue) and now has hard drive problems. I have two old PowerMac G4s sitting here plugging along--maybe I'm over laptops. Thanks
MacBook Pro 2.0/2GB/100GB Mac OS X (10.4.8) TiBookG4 1.0/512K/60; PowerMacG4 Quicksilver 933/1G/160; PowerMacG4 450/1GB/100

Won't boot past grey logo screen

I have a refurb dual 2Ghz powermac G5. New in March 2006.
It will not boot past the grey logo screen. I have tried all of the regular stuff: reset pram, reset nvram, reset-all, pushed the PMU button, etc, unplugged; reset ram; removed and reset ALL cards/memory. And nothing.
When trying to boot in single user mode, it freezes when almost getting to a prompt.
I CAN boot to open firmware. Though booting from the OS X install cd yields the computer to freeze at the grey logo screen.
I am dual booting Gentoo Linux, and the curious thing is that if I select Gentoo at boot, the computer freezes when loading the kernel for Linux.
So it's not an OSX thing it seems like; probably hardware.
I ran the 40min extended apple hardware test from the PMG5 OS X disc which passed everything with NO errors.
I then booted the disc in target mode with my iBook, and repaired permissions: it said was all okay, nothing to fix.
I removed the battery, and placed it back in. The battery tests fine with my voltage meter-tester.
I am a PC technician, but am stumped in trying to get my powermac to boot. Let me know if you have any other ideas. Thanks,
Dual 2Ghz Powermac G5
1.5GB ram
stock Radeon 9600
stock 160GB hard drive
airport card
Dual 2Ghz Powermac G5 Mac OS X (10.4.6) Logic 7.2 Gentoo PPC

Okay my powermac is at the local mac repair center. All hardware checked out okay; the tech is unsure of the issue. He's pulling parts and going to see what part is failing. He thinks the power supply is freaking out and sending out too much voltage, causing the computer to freeze at boot.

Help: iMac won't boot past Grey logo screen with spinning lines

My fiance's iMac (intel based) running snow leopard (upgraded from Leopard a couple months ago) will not boot past the logo and spinning lines. This started after at attempting to restart after installing updates to Safari and iTunes.
When booting in verbose mode I get these lines:
Launchctl: Dubious permissions on file (skipping): /Library/LaunchDaemons
Launchctl: Dubious permissions on file (skipping): /System/Library/LaunchDaemons
Launchctl: Dubious permissions on file (skipping): /etc/mach_inid.d
AppleYukon2: Marvel Yukon Gigabit Adapter 88E8055 Singleport Copper SA
AppleYukon2: RxRingSize <= 1024, TxRingSize 256. RXMAXLE 1024, TXMAXLE 768, STMAXLE 3328
Then it just stops and does nothing.
I've unplugged everything except the apple keyboard and mouse. Ethernet is not connected.
She doesn't seem to have the original disc that came with the computer, but I do have the Snow Leopard upgrade disc.
What do I do? It won't boot in Safe Mode either, freezes at the same spot.
I'm not a particularly savvy Mac user as I recently embraced them when we moved in together.
Any help would be greatly appreciated

Repairing permission is not the first answer. Should try to run fsck and reset the PRAM
Start up your computer in single-user mode to reach the command line.
Note: If necessary, perform a forced restart as described in the Emergency Troubleshooting Handbook that came with your computer. On desktop computers, you can do this by pressing the reset/interrupt button (if there is one) or holding down the power button for several seconds. On portable computers, simultaneously press the Command-Control-power keys. If your portable computer doesn't restart with this method, you may need to reset the Power Manager.
At the command-line prompt type:
/sbin/fsck -fy
Press Return. fsck will go through five "phases" and then return information about your disk's use and fragmentation. Once it finishes, it'll display this message if no issue is found:
** The volume (name_of_volume) appears to be OKIf fsck found issues and has altered, repaired, or fixed anything, it will display this message:
***** FILE SYSTEM WAS MODIFIED *****
Important: If this message appears, repeat the fsck command you typed in step 2 until fsck tells you that your volume appears to be OK (first-pass repairs may uncover additional issues, so this is a normal thing to do).
When fsck reports that your volume is OK, typerebootat the prompt and then press Return.
Your computer should start up normally and allow you to log in.
Resetting PRAM and NVRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
Your computer's PRAM and the NVRAM are reset to the default values. The clock settings may be reset to a default date on some models.

IMac won't boot past grey startup screen

It's a 2008 intel iMac running ML and bootcamp with Win7
It was working fine yesterday then I tried to start Aperture. It bounced on the dock but wouldn't open.
I tried a restart and it just gets to the grey startup screen with the Apple logo and spinner
I can start it from an external drive and I just tried to start from Bootcamp and it starts and runs fine
I have repaired and verified the disc and it says it is fine
Something is stopping it booting into ML
Any ideas?
Allan

Thanks, I already tried most of those. I followed the other suggestions ( already failed safe boot) and when it got to " take it to Apple" I just restored it from Time Machine and it all works perfectly.
It would have been nice to fugure out why it wouldnt boot, something must have been corrupted.
I dont know if its anything to do with it, but when I got the restored system booted up and downloaded all my emails, there was an email in my outbox with no recipient field filled in but a link to some iffy website in the message field.( Something like burnt gate)
I deleted it.
Maybe my first Mac virus?
Allan

IMac won't boot past grey logo screen

20" iMac was acting very slow, to the point where I would get the rainbow ball if I opened the HArd Drive icon.
Revolted but couldn't get past the grey logo screen and spinning wheel. Tried a Disk Repair from the Snow Lep disc but it just froze up.
I restored from my Time Machine drive and 24 hours later it's still the same. Getting ready to bring it to the genius bar unless anyone has an idea!

HI Rob,
Check to see how much space is available on the startup disk. Right or control click the MacintoshHD icon. Click Get Info. In the Get Info window you will see Capacity and Available. Make sure you always have a *minimum of 10% to 15% free disk space at all times.*
If your iMac freezes before you can view that information, boot from your install disc like you did with disk repair only this time look at the bottom of the Disk Utility window. You'll see Capacity and Available.
Since you can't boot from the install disc, you could try booting in Safe Mode
If you can boot into Safe Mode, launch Disk Utility from the Applications/Utilities folder. You can verify the startup disk in Safe Mode, but you can't repair in Safe Mode but at least you'll know if there's a problem with the startup disk.
Carolyn

Start Up won't get past grey Apple screen

Trying to start my computer for first time in 6 days. When turning on it gets to Grey Apple logo screen and then a bar appears underneath, the bar doesn't fill and then the computer powers down. Please help.

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.
If you make it to the desktop, repair permissions-http://docs.info.apple.com/article.html?artnum=25751

Powerbook will turn on but won't get past grey apple screen

My powerbook will turn on but it will never get to the operating system screen where you enter a password. I don't know what to do and sometimes it will get to the all blue screen but not past that... Any help would be greatly appreciated. Also, is there anyway to get my files off of the laptop regardless? There are 3 weeks until my final exams and I have all my notes on my laptop. Any help is greatly appreciated.

If you can boot off the installation DVD, then your computer's fine, and there is something broken with the system software.
You could try re-installing Mac OS X (not a clean install, or an erase-and-install, but just an upgrade of the existing OS), but that may lead to having your apps broken, which may be more work for you.
Another thing to try is to hold the Shift key down whilst you are booting into the login screen. Doing this will disable the startup of some system extensions and daemons (StartupItems), which may get you going. However, if you can go to the login screen without too much trouble, try logging in with the Shift key down. That will stop Mac OS X from starting up items in your "Login Items" list in the Accounts system preferences.
This is the most useful tips I can offer short of re-installing Mac OS X on your computer.
Cheers!
--tonza

G4 won't boot past grey apple screen

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