blue screen after startup and system hangs

When I run these commands I am asked for my password, which I do enter. Upon return, it says it couldn't complete the task of disabling. I have correctly changed the line to my directory (ask I see yours is posted). The terminal is acknowledging that I want to disable so the command is sound, but it simply says it cannot be disabled.

This thread has been inactive for almost four years. Many helpers avoid "tag-on" questions and some who responded here no longer participate. Please start a new thread being sure to show your Mac's model, sub-modle and Mac OS version. In Apple Support Communities the best action is ALWAYS start a new thread if you have a question or problem.

Start a new thread and have to repeat all of the info already shared here again? As a long time tech support specialist for software I was a moderator, we would ask users to avoid creating new threads.

I already have found an answer on a different forum where I did jump in which is the right thing to do.

I suggest locking this thread if you wish others to not respond.

I also tried reinstalling the OS - no luck there either.

What is safe boot?

http://support.apple.com/kb/ht1564

I'd look at what extra is added to a normal boot over safe boot.

Did you reformat your harddrive. Maybe you have a corrupt hd. Could you try running off an external hd?

Big mystery to me!

Robert

Hopefully, it is a hobby to figure this out.

I looked over the apple page on safe boot. Must be a problem with a driver.

Here is what apple lists.

Starting up into Safe Mode does several things:

• It forces a directory check of the startup volume.
• It loads only required kernel extensions (some of the items in /System/Library/Extensions).

Ok. Maybe some extenstion is causing the problem. What is the source of the DVD? Maybe there is a problem with the DVD. Got the right version? Maybe you should buy Leopard & try it.

In Mac OS X v10.3.9 or earlier, Safe Mode runs only Apple-installed startup items (such items may be installed either in /Library/StartupItems or in /System/Library/StartupItems; these are different than user-selected account login items).

Oh, Mac OS X is migrating away from the RC files. Tiger is mostly away but not all.

• It disables all fonts other than those in /System/Library/Fonts (Mac OS X v10.4 or later).
• It moves to the Trash all font caches normally stored in /Library/Caches/com.apple.ATS/(uid)/ , where (uid) is a user ID number such as 501 (Mac OS X v10.4 or later).
• It disables all startup items and login items (Mac OS X v10.4 or later).

You got a new account so there shouldn't be any login items.

Mac OS X v10.5.6 or later: A Safe Boot deletes the dynamic loader shared cache at (/var/db/dyld/). A cache with issues may cause a blue screen on startup, particularly after a Software Update. Restarting normally recreates this cache.

You can manually delete this. There was some thread where a guy was playing around with this in Tiger.

This is an interesting line. Mabye you can get BDAqua's attention on this. He did some investigation. I seem to recall. Someone did. You might want to email BDAua's & tell him about this thread. He's good.

Taken together, these changes can help resolve software or directory issues that may exist on the startup volume.

Safe Mode in Mac OS X v10.5 or later also disables Quartz Extreme (hardware accelerated graphics). Applications that depend on Quartz Extreme will not open, and the Mac OS X menu bar will appear solid even if "Translucent Menu Bar" is enabled in Desktop & Screen Saver preferences.

You running Tiger? This is an interesting point.

--------------------------

What is the source of your DVD. Maybe you have the wrong one. Could you try Leopard. You can still get it from Apple.

Should work after a fresh install. Should be all new software without any corruptions. Hardware should be OK. Maybe Quartz Extreme or an extension would invoke new hardware.

I thing most of this startup stuff is in scripts. Might be able to track down what the safe boot switch is & where.

Good Luck.

Hello, Robert asked I drop in. 🙂

I'd say it is very likely the Graphic card/VRAM issue when Quartz & other video things are enabled. I'd say the odds are 93.4875%. 😉

Not certain which kext, but see this great post by themachead on how to list the extensions in Safe Mode with System Profiler then compare to the extension folder!

http://discussions.apple.com/thread.jspa?messageID=10161377&#10161377

The link is giving me an error. A search gives me these two links:

https://discussions.apple.com/thread/2122396?answerId=10055817022#10055817022

seems to be a summary of the above thread:

https://discussions.apple.com/thread/2129989

system profiler.

the blue Apple icon > About this Mac > More info…

goto the hardware section. Scroll down and click on software then extensions.

Here are my extension in a normal boot in 10.4.11 on a iMac g3 600.

Send me an email if you want it in plist format. It's a big file & I'll have to trim it.

Robert

Great work Robert, not sure when I last checked my link, but since ASC I try to check them all!?

Send me an email if you want it in plist format. It's a big file & I'll have to trim it.

To whom do you speak, btw, your eMail isn't showing to us in your Profile. 🙂

I do not check my links either. I wait for people to complain😀

An email address now appears. I was marvelling how little spam I get on the account. We will see.

Robert

Your going to have to figure out how X selects what extensions to load.

maybe a post to

https://discussions.apple.com/community/mac_os/mac_os_x_technologies

I do not know how Mac OS X selects what extensions to load. Is there a list?

Here is a hint:

here is the flag OSBundleRequired. Now where is it?

http://lists.apple.com/archives/darwin-development/2002/Dec/msg00083.html

Here is an overview of the boot process for 10.3. Notice it was written 2003. Tiger will be a little different. I think Tiger uses more plist in the startup process. I'd guess the extension process is too early to have changed.

http://osxbook.com/book/bonus/ancient/whatismacosx/arch_startup.html

I'd try the old rename hack.

Apple02Audio.kext rename to Apple02Audio.kextaug28

Here is another way of listing the extensions. The command line version of System Profiler

Macintosh-HD -> Applications -> Utilities -> Terminal

system_profiler SPExtensionsDataType

system_profiler -h

for some help on system_profiler

Great! Looks like they put the flag in each plist file for each of the extensions.

do the terminal command:

Macintosh-HD -> Applications -> Utilities -> Terminal

find /System -type f -exec grep -il "OSBundleRequired" {} \;

It will take a bit. search all files in /System print each file that contains OSBundleRequired

maybe you only need

find /System/Library/Extensions -type f -exec grep -il "OSBundleRequired" {} \;

cat /System/Library/Extensions/System.kext/PlugIns/IOSystemManagement.kext/Info.pli st

found:

<key>OSBundleRequired</key>

<string>Root</string>

<key>OSKernelResource</key>

<true/>

This will list all extensions that have OSBundleRequired variable. With the flag for that extension.

find /System/Library/Extensions -type f -exec grep -iHA 1 "OSBundleRequired" {} \;

-iHA 1

i=case independent H=List file name A 1=print found line & print one line after

What do the values mean? the names are a little different since the equ is listed. 😎

http://developer.apple.com/library/mac/#documentation/DriversKernelHardware/Refe rence/libkern_ref/OSKextLib_h/index.html

do a google search on OSBundleRequired

Robert

extensions at safe boot...

Extensions:

AppleCore99NVRAM:

AppleFWOHCI:

AppleGMACEthernet:

AppleI2C:

AppleKeyLargo:

AppleMPIC:

AppleMacRISC2PE:

AppleMacRiscPCI:

AppleNMI:

AppleOnboardDisplay:

ApplePMU:

ApplePlatformFamily:

AppleUSBHub:

AppleUSBMergeNub:

AppleUSBOHCI:

AppleVIA:

AppleXsanFilter:

BSDKernel:

BSDKernel6.0:

BootCache:

IOATABlockStorage:

IOATAFamily:

IOATAPIProtocolTransport:

IOCDStorageFamily:

IODVDStorageFamily:

IOFireWireFamily:

IOGraphicsFamily:

IOHIDFamily:

IOKeyLargo:

IOKit:

IOKit6.0:

IONDRVSupport:

IONVRAMFamily:

IONetworkingFamily:

IOPCIFamily:

IOPlatformFunction:

IOSCSIArchitectureModelFamily:

IOSCSIBlockCommandsDevice:

IOSCSIMultimediaCommandsDevice:

IOStorageFamily:

IOSystemManagement:

IOUSBCompositeDriver:

IOUSBFamily:

IOUSBHIDDriver:

IOUSBMassStorageClass:

IOUSBUserClient:

KeyLargoATA:

Libkern:

Libkern6.0:

Mach:

Mach6.0:

SCSITaskUserClient:

System:

System6.0:

Unsupported:

msdosfs:

extensions for normal boot.......................................................

Extensions:

ATIRage128:

Apple02Audio:

Apple02DBDMAAudio:

AppleCore99NVRAM:

AppleFWAudio:

AppleFWOHCI:

AppleGMACEthernet:

AppleI2C:

AppleKeyLargo:

AppleMLANAudio:

AppleMPIC:

AppleMacRISC2PE:

AppleMacRiscPCI:

AppleNMI:

AppleOnboardDisplay:

ApplePMU:

ApplePlatformFamily:

AppleSCCSerial:

AppleScreamerAudio:

AppleUSBHub:

AppleUSBMergeNub:

AppleUSBOHCI:

AppleVIA:

AppleXsanFilter:

AudioIPCDriver:

BSDKernel:

BSDKernel6.0:

BootCache:

IOATABlockStorage:

IOATAFamily:

IOATAPIProtocolTransport:

IOAudioFamily:

IOCDStorageFamily:

IODVDStorageFamily:

IOFireWireAVC:

IOFireWireFamily:

IOFireWireIP:

IOGraphicsFamily:

IOHIDFamily:

IOKeyLargo:

IOKit:

IOKit6.0:

IONDRVSupport:

IONVRAMFamily:

IONetworkingFamily:

IOPCIFamily:

IOPlatformFunction:

IOSCSIArchitectureModelFamily:

IOSCSIBlockCommandsDevice:

IOSCSIMultimediaCommandsDevice:

IOSerialFamily:

IOStorageFamily:

IOSystemManagement:

IOUSBCompositeDriver:

IOUSBFamily:

IOUSBHIDDriver:

IOUSBMassStorageClass:

IOUSBUserClient:

KeyLargoATA:

Libkern:

Libkern6.0:

Mach:

Mach6.0:

SCSITaskUserClient:

System:

System6.0:

Unsupported:

msdosfs:

Here is a diff of the two files. Never can remember how to read.

mac $ diff safeExtensionNames NormalExtensionNames

1a2,4

> ATIRage128:

> Apple02Audio:

> Apple02DBDMAAudio:

2a6

> AppleFWAudio:

6a11

> AppleMLANAudio:

13a19,20

> AppleSCCSerial:

> AppleScreamerAudio:

18a26

> AudioIPCDriver:

24a33

> IOAudioFamily:

26a36

> IOFireWireAVC:

27a38

> IOFireWireIP:

40a52

> IOSerialFamily:

mac $

iMac g3 600 Tiger 10.4.11

Macintosh-HD -> Applications -> Utilities -> Terminal

how I got the info in a normal boot

system_profiler SPExtensionsDataType >NormalExtensions

cat NormalExtensions

cat NormalExtensions | grep ":$" >NormalExtensionNames

cat NormalExtensionNames

Robert