Mac OS 10.5 has encountered a serious error

Asked By Jonathoon Smith 40 points N/A Posted on - 11/28/2012

Hello People,

My machine running with Mac OS 10.5 has encountered a serious error. It has thrown an error message as under.

I have restarted my machine but no result. Have you any idea why this error message show?

Thanks.

Sorry, a system error occurred.

unimplemented trap

To temporarily turn off extensions, restart and hold down the shift key.

• Status: Open
• Question Views: 849
• Answer Count: 2
• Vote Up 0 Vote Down

• Answer Accepted: Yes
• Question Category: Apple OS

Best Answer by Baker Mich

Go To Solution

Answered By oliverpowell 50 points N/A #145299

Mac OS 10.5 has encountered a serious error

This is an extension trouble. Activate all the extensions once you boot with extensions off, except for those that are NOT important enough to be turned on (including all 3rd-party extensions for installed programs, etc.). Restart and see what happens.

About oliverpowell

Questions
0

Answers
260

Best Answers
33

• Vote Up 0 Vote Down

• Posted on - 11/28/2012
• Question Category: Apple OS

Best Answer

Best Answer

Answered By Baker Mich 5 points N/A #194851

Mac OS 10.5 has encountered a serious error

Hi Jonathoon,

You need to set up the Mac's PRAM, NVRAM, and Open Firmware.

Shut down Mac, then push the power button on. Before screen lights up, promptly hold down the Command, Option, P, and R keys, until the system has chimed twice more after the start. Next , before the screen lights up, press down Command-Option-O-F until the Open Firmware screen prompts. Afterwards enter these lines, pressing Return after each one:

reset-nvram
set-defaults
reset-all

————

List of devices:
devalias

List of variables
printenv

mac-boot

If you act late while doing this, shutdown your system, then hold down the option key. This will help appear the startup manager. Start up your machine. Click on the dvd image. Click on the arrow icon.

Hope this helps.

Thanks Baker

About Baker Mich

Questions
3

Answers
101

Best Answers
53

• Vote Up 0 Vote Down

• Posted on - 01/30/2013
• Question Category: Apple OS