Mac Pro cold boot failure rate at 50%

I have a Mac Pro dual 2.8 ghz quad core, circa 2008. Recently, I have been required to depress the power button to end a failed cold boot, then press again to boot, usually with success.
I do hear a chime, but in the failed situation, it never progresses to the login screen.
I've reset the pram a few times, this doesn't seem to fix anything, as the system always boots if you try enough times (knock on wood).
I've verified the s.m.a.r.t. status and the disk, it all reports back as fine.
I am writing this post from a "safe boot" hope to see if that works on the next cold boot.
Other posts on this forum suggest it may be a weak pram battery so I will try that, the computer is getting on in years. However a similar post on this forum was marked as answered because the problem reported stated it did not chime from the external speakers. I don't care about that! So here's a new thread about documenting and hopefully solving the actual problem.

I have a Mac Pro dual 2.8 ghz quad core, circa 2008. Recently, I have been required to depress the power button to end a failed cold boot, then press again to boot, usually with success.
Every hard restart freeze, and can guarantee you end up with
corrupt caches, corrupt file system, corrupt directory.
Safe Boot is not effective in such cases, fsck from single user mode has a better chance.
Booting from another hard drive, install your bought copy of Alsoft Disk Warrior to rebuild the directory (it has deep scavenge files also).
The longer you continue to do just Safe Boot and continue using it, the more trouble and less likelihood of being able to repair the drive.
SMART is not smart enough, it tells you about the past, not what could likely happen, or if you have had bad sectors and I/O errors.
Have bootable backup clones and a drive that is a clean Apple OS and drivers that isn't used except for repairs and maintenance. Don't rely on just Apple Disk Repair.

Similar Messages

  • 2006 Mac Pro Cold Boot Failure

    Hi all,
    I have problems with 2006 Mac Pro. It fails cold boot at 100%, first thing in the morning only. So I'm seeking expert advice.
    The spec is,
    Xeon 5355 2.66GHz x2 (Octo cores)
    ATI Radeon 5770(Apple Genuine)
    8GB Memory(4x1GB kingston, 4x1GB OWC)
    500GBx2 1TBx2 HDDs
    I disassembled and cleaned PSU and Fans, reapplying thermal pastes on CPUs and North Bridge a month ago.
    Then I booted, system froze at desktop, so I shut it down, reset PRAM & SMC. it booted normally but the upper riser card wasn't detected at all. I cleaned the slot contact and reseated DIMM modules. It was detected after that.
    Everything worked fine for a few days but then I got random kernel panics, reseated RAM, reinstalled Snow Leopard but still got random kernel panics. Then ran AHT for a couple of hours and got an error code 4MEM/6....
    I contacted OWC and they sent me a new set of memory modules. While waiting for the replacement, no kernel panics at all but DVD drive died as well as IDE cable, so I replaced both.
    I got the replacement RAM but past a week, MP fails cold boot every morning. Below is what's happening...
    (1) With Kingston Memory, CPU B error LED is lit, I press SYS_RST, one of DIMM LED is then lit (always DIMM A1). Or sometimes, Power-LED is blinking.
    (2) With OWC memory, boots normally, then kernel panic within a few minutes.
    (3) With OWC memory, CPU B error LED is lit, I press SYS_RST, one of DIMM LED is then lit (always DIMM B1)
    *(1) with new and old riser cards
    *(3) after replaced 2 riser cards
    Replacing riser cards didn't help. After these happen, I shut down by pressing power button for seconds and it boots normally without a hitch. Never get kernel panics nor system freeze. It means when it warms up, MP just works just like it should.
    Replaced so far,
    -- IDE cable (Apple Genuine)
    -- DVD drive (Optiarc AD-7200A)
    -- 4GB (1GBx4) OWC memory
    -- RTC battery CR2032
    -- 2 riser cards
    Is the logic board dead or PSU or memory modules are still bad?
    Any ideas?
    Thanks

    I have a Mac Pro dual 2.8 ghz quad core, circa 2008. Recently, I have been required to depress the power button to end a failed cold boot, then press again to boot, usually with success.
    Every hard restart freeze, and can guarantee you end up with
    corrupt caches, corrupt file system, corrupt directory.
    Safe Boot is not effective in such cases, fsck from single user mode has a better chance.
    Booting from another hard drive, install your bought copy of Alsoft Disk Warrior to rebuild the directory (it has deep scavenge files also).
    The longer you continue to do just Safe Boot and continue using it, the more trouble and less likelihood of being able to repair the drive.
    SMART is not smart enough, it tells you about the past, not what could likely happen, or if you have had bad sectors and I/O errors.
    Have bootable backup clones and a drive that is a clean Apple OS and drivers that isn't used except for repairs and maintenance. Don't rely on just Apple Disk Repair.

  • MAC PRO COLD BOOTS 5 SECONDS AFTER SHUTDOWN

    HELP!
    I've become very frustrated trying to fix this problem:
    1.) I shut the computer down like normal (from the apple icon in the toolbar, select shutdown, click "okay" on the shutdown dialogue box), and it appears to shut down (i.e. I hear the "click" as the power shuts off).
    2.) 5 seconds later (if I have not disconnected the power, or turned off the surge protector) it cold boots as if I pressed the power button.
    3.) Putting the computer to sleep produces the same results.
    I'm fine with killing the power after it shuts off with the power conditioner, but is that hurting the machine?
    -gwb

    djgardnsound wrote:
    HELP!
    I've become very frustrated trying to fix this problem:
    3.) Putting the computer to sleep produces the same results.
    Try a SMC reset which governs such things.
    I'm fine with killing the power after it shuts off with the power conditioner, but is that hurting the machine?
    Unplugging your Mac from it's power source causes the PRAM battery to discharge as it tries to maintain PRAM settings and the Macs clock. If you have done this before, or often cut power off to your Mac via a power strip or wall switch, your battery will deplete very quickly. You'll be replacing it often.
    If you never cut off power to your Mac, they can last 3 to 5 years (mine lasted 7).
    Dale

  • Mac pro cannot boot after upgrade to 10.8.3

    My Mac Pro cannot boot after upgrade to 10.8.3. Anything firmware I can reset or how should I do.
    I am using a early 2008 Mac Pro

    Can you boot into safe mode? http://support.apple.com/kb/ht1455
    If not, how about Recovery? http://support.apple.com/kb/ht4718
    If you can, run Disk Utlity and repair the disk. You can try rebooting normally, but I would just reinstall after quitting Disk Utility.

  • HT4818 Boot from laptop's Windows Hard Drive in Mac Pro via Boot Camp

    I have a work laptop that is on Windows 7.  It's a work hard drive so I don't want to mess with it (particularly as it's encrypted).  I basically want to use it on my Mac Pro rather than my piece of junk standard issue laptop when I'm working from home.
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    Thanks for the quick (and no nonsense) response!

  • Mac Pro 2006 boots into OS fine but graphics freezes on grey apple logo

    When I boot my Mac Pro it boots into Mac OS X fine. I can access it remotely and all seems fine however the monitor only displays the grey apple with the whit background. I know the graphics card isnt over heating because I have removed any dirt/dust and had additional fans blowing the card and it is running cool.
    does this mean the graphics card is dead? if so what can i replace it with as the machine is now 5 years old?
    the current graphics card is a GeForce 8800 GT.

    That last one is not a good sign. Kernel panic when starting from an installer DVD either mean you are using an installer version that cannot boot your model or there's a hardware problem.
    I'm thinking your original thought may be valid. It would be provable if you had another GPU to try, but if you don't then I suppose you should replace the one you have. Of those available the ATI 5770 is an excellent replacement choice for both performance and cost unless you want to look for a different replacement card on eBay.

  • I have put Windows 8 on my Mac pro, in boot camp, no I am unable to load drivers

    I have put Windows 8 on my Mac pro, in boot camp, no I am unable to load drivers to get it working as it should. I have tryed Winows 7 Con, in setup.

    Did you download the drivers to a FAT32 formatted USB drive per the instructions?

  • Mac OS X Boot failure... I cant Repair HDD with OS Disk,Shows Repair Failed. I cant backup my files from HDD. Backup failed. But I need my all datas from HDD. I dont want to format. Cant enter safemode also. anything else..

    Mac OS X Boot failure... I cant Repair HDD with OS Disk,Shows Repair Failed. I cant backup my files from HDD. Backup failed. But I need my all datas from HDD. I dont want to format. Cant enter safemode also. anything else..
    I installed XP @Bootcamp, I cant access my Mac HDD via XP..
    What I do??? Please help me.. please...

    You can try DiskWarrior (about $100).
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  • Mac pro wont boot or chime

    Mac pro wont boot or chime

    you don't know how to provide more details or what you have tried or are you just lost?
    What OS is on it? and this is a 4-drive 65 lb workstation and not a MacBook Pro notebook.
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    https://www.apple.com/support/osx/
    https://www.apple.com/support/quickassist/
    http://www.apple.com/support/mac101/help/
    http://www.apple.com/support/mac101/tour/
    Get Help with your Product
    http://docs.info.apple.com/article.html?artnum=304725
    TimeMachine 101
    https://support.apple.com/kb/HT1427
    Mac OS X & Mountain Lion Community
    https://discussions.apple.com/community/mac_os
    https://discussions.apple.com/community/mac_os/os_x_mountain_lion?view=discussio ns
    Recovery Mode
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    https://support.apple.com/kb/TS1367
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    MacBook Pro
    https://discussions.apple.com/community/notebooks/macbook_pro
    https://discussions.apple.com/community/mac_os?view=discussions 
    http://www.apple.com/support/macbookpro

  • Mac Pro Display flicker & failure to boot

    Hello people who are smarter than me.
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    Okay, so after doing all of the above, the computer still takes between 40 seconds and 1 minute or so to boot up, and the VersionCue messages still appear. However I discovered that the "kdcmond cannot retrieve..." messages disappeared after I disabled my ethernet connections. So at least I know that that had nothing to do with the extended boot-up time.
    I have heard that the more RAM you have, the longer it takes to boot due to the RAM count. Since I have 10 GB, maybe this is why?
    I've included the most recent Console messages below:
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    22/4/08 9:56:16 AM com.apple.launchd[1] (com.adobe.versioncueCS3) Unknown key: ServiceDescription
    22/4/08 9:56:16 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
    22/4/08 9:56:16 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
    22/4/08 9:56:16 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
    22/4/08 9:56:39 AM com.apple.SystemStarter[28] Starting Aladdin USB daemon
    22/4/08 9:56:39 AM org.ntp.ntpd[25] Error : nodename nor servname provided, or not known
    22/4/08 9:56:39 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[74]) Exited: Terminated
    22/4/08 9:56:39 AM com.apple.launchctl.Aqua[90] launchctl: Please convert the following to launchd: /etc/machinit_peruser.d/com.adobe.versioncueCS3.monitor.plist
    22/4/08 9:56:42 AM com.apple.launchd[82] (0x1011e0.VersionCueCS3monitor) Failed to check-in!

  • Mac Pro will boot but won't restart.

    When waking up or doing a soft boot my Mac Pro will chime and sound like it's booting but the display will never come on.
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  • Overall happiness with Mac Pro and Boot camp/XP

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    I love mine. Its quiet, launches native apps practically instantly (CS2 takes a few seconds longer), and performs all the system instensive stuff I ask of it quickly and without complaint.
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    Hey there everyone,
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  • Mac pro not booting up

    Help my mac pro will not boot up gray screen with apple logo and the loading icon keeps going round and round but nothing else happening. Iam running Lion OS X (10.7) Help please

    hello,
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    - removal of the physical RAM cards: no change
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