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why OSX keeps rebooting itself without warning and in the middle of any type of work?

I'm on a Mac Pro 3.1 - 8 core dated 2008

OSX is starting to behave as if it was a microsoft OS. It keeps rebooting automatically ruining any type of work

I've reinstalled the OSX

I've tried OSX Leopard, Snow Leopard, Mountain Lion, Mavericks, El Capitan wasting hours and hours

I've made cmd+R to verify and repaired permissions already for several times

The system is no longer stable since last July.

keeps rebooting at its own wish

I've done the basic and also the throughout system diagnostic with the original installation OSX cd disk and it says that is no hardware problem in the Mac

A bug must be in OSX or is there something specific that you can please give us all a clue to resolve this.

As it appears that this is happening across several types of different Macs, like mac book pros, mac pros and so on as it can be verified in these apple forums.


Your help is appreciated

Mac Pro, OS X Mountain Lion (10.8.5), null

Posted on May 4, 2016 3:23 PM

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30 replies

May 5, 2016 12:47 PM in response to alexcgrade

You could note the time the next crash and look at the messages right BEFORE then to get a hint at what the real problem might be


Make sure you have "All Messages" selected in the Console app when you are looking and make sure the "Filter" fill-in box at the top right has nothing in it so that you see everything. Once you get things narrowed down to a specific error or app or whatever seems to be the common thread preceding the crashes post those details for further assistance.


You might try to look for "BOOT_TIME" (don't forget the underscore) messages - think this is the first message during a boot-up sequence that appears in the console logs.


Good luck...

why OSX keeps rebooting itself without warning and in the middle of any type of work?

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