Problem with El capitan on Mac pro 1.1

[maxmmm]

Hello everybody,

Here I have installed El Capitan on my Mac Pro 1.1 via the procedure proposed by Pikify.

Everything works fine for 1 week, then the mac freezes and shuts down.
From then on, it's impossible to turn it back on. It turns on, I hear the chimes and off by itself.

I thought it could come from the security update that you apparently don't need to install. However, I had unchecked the box that allows automatic updates in the system preferences.

Do you have any idea where the problem could come from ?

Thanks to all of you,

Max

 

[pigoo3]

Everything works fine for 1 week, then the mac freezes and shuts down.
From then on, it's impossible to turn it back on. It turns on, I hear the chimes and off by itself.

Wanted to clarify what was mentioned. Are you saying AFTER installing El Capitan everything worked fine for 1 week...and then it won't boot again properly. Has this only happened once...or has it happened multiple times?

Thanks,

- Nick

 

[maxmmm]

Yes it worked fine during 1 week - I just had some problems with strange restarts sometimes, but I changed the RAM place inside the macpro and it was working fine after.
Here, I had a blackscreen, the computer stops and now, he shutdowns directly when I start it.
(I precise I can boot on my older 10.7 system, on another hard drive.)

thanks

 

[pigoo3]

(I precise I can boot on my older 10.7 system, on another hard drive.)

This was something I was going to suggest...trying to boot your Mac Pro from a different hard drive with a different macOS version on it.

Are you saying you tried this (and it worked/not worked)...or haven't tried it yet?

- NIck

 

[maxmmm]

Yes it works perfectly on 10.7. The system says me the El Capitan hard drive is not available, and it's not possible to repair it.

 

[pigoo3]

Thanks for confirming...wanted to be 100% sure I understood correctly.

As you probably know...macOS 10.7.5 "officially" from Apple is the newest macOS Mac Pro 1,1's are supposed to run.

El Capitan (macOS 10.11) is 4 macOS versions newer...thus there's always the possibility of issues running an unsupported OS version.

I think you mentioned installing El Capitan via a procedure from someone named "Pikify". If someone else out there offers a different install method...maybe give that a try...and maybe you will have better stability.

- Nick

 

[harryb2448]

Have a look through this there is a fair bit about Pkify and the 14 odd versions and problems.

2006/2007 Mac Pro (1,1/2,1) and OS X El Capitan

Try this: http://forums.macrumors.com/threads/boot-efi-developers-thread.1924434/page-33#post-22222642

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