Yes i changed the monitor and the cable (I have another Pc in the hause ), the monitor and cable ok.Can you connect the monitor to another computer with a different cable to check it isn't the monitor or cable. Or connect the Mac to another monitor to try to eliminate causes.
Have you reinstalled the pre-patched Yosemite yet? You said it was working before upgrading to 10.10.5 so worth trying. The screen flash and failure to install may not be the same problem.
yes i have boot screen, i can see Hd macitosh , recovery 10.10.5 , and Usb yosemite .Okay. You're in luck. That's not an Apple card. But I doubt you have a bootscreen during start up?
yes i have boot screen, i can see Hd macitosh , recovery 10.10.5 , and Usb yosemite .
Can i have link with Hennesies instructions please , Thank You for help.This happens to the best of us. You are clearly doing something wrong. Follow Hennesies instructions very carefully and you will be up and running.
Thank You , I follow step by step .Hennesie2000's Guide for installing Yosemite on a Mac Pro 1,1 or 2,1 - the boot.efi method
It's in posting number 1.
Anyone know how to install El Cap on a mac pro 2,1 running Yosemite?
Do you know where one is?If you already have the pre-patched installer, use that to install 10.10.0. Then immediately install the PikeYoseFix and reboot twice. Then run your updates through the App Store.
There is a link in the first post
Thanks man, this post is so long now. Hard to fine stuff.
Whats the best method to install? Bootable USB? Using Disk Ute on Diskmaker?
Thanks!
Making a bootable USB or DVD always worked for me. The most trouble free is to create an 8GB partition on an internal HDD and restore the pre-patched dmg to that.
Brilliant. Thanks!
Just a straight recovery of the image you mad a link to?
J
Just use Disk Utility to restore the image.
This happens to the best of us. You are clearly doing something wrong. Follow Hennesies instructions very carefully and you will be up and running.
Sorry to come back with that !
I'm running Yosemite 10.10.2 on a MacPro 2.1
What do I have to do to be able to update to OS X 10.10.5
I tried and it does nothing
My question : whats wrong ?
Thanks again for any help
Michel
If you update without having installed Yosefix the boot.fi files will be overwritten by the update and your Mac will not boot. Once installed this fix ensures the files are not overwritten and you can update to 10.10.5 from the App Store without any problem.Sorry to come back with that !
I'm running Yosemite 10.10.2 on a MacPro 2.1
What do I have to do to be able to update to OS X 10.10.5
I tried and it does nothing
My question : whats wrong ?
Thanks again for any help
Michel