Guide: Update OS X Mavericks to OS X Yosemite Using UniBeast and MultiBeast

[drho2004]

Updated two machines today relatively painlessly, both old hardware, the testbed Hack with a P5KPL-VM and the main user with a GA-P55M-UD4. No major issues..

Hello! I have a GA-P55M-UD4 currently running mavericks 10.9.5 and have attempted to update to yosemite afew times now. I get stuck everytime after it installs and it reboots again from usb and i choose the yosemite install (hdd) it goes into apple gray screen with progress bar and nothing happens. I waited the most about 1 hour. Did u try anything special when you updated your mavericks? I followed the guide to a T but no luck. Thanks!!

 

[drho2004]

Hello! I have a GA-P55M-UD4 currently running mavericks 10.9.5 and have attempted to update to Yosemite a few times now. I get stuck every time after it installs and it reboots again from USB and i choose the Yosemite install (HDD) it goes into apple gray screen with progress bar and nothing happens. I waited the most about 1 hour. Did u try anything special when you updated your mavericks? I followed the guide to a T but no luck. Thanks!!

Booted with -v flag and noticed it got stuck at PCI Configuration Begin, not sure how to proceed from here

 

[KiwiHaggis]

The steps outlined in this post are spot on. Thanks again for the wealth of knowledge on this site.

 

[kessaras]

hi, what about when the yosemite is not available anymore for our country in app store ? Where is best to download yosemite from ?
And what about the boot loader , i will use same boot flags as in mavericks ? my machine is fully compatible and i only use npci=0x2000 to boot on mavericks and only sleep isn't working.

 

[SDB49]

Any help on this. Been at it for the last 7 hours (yes) and looked through dozens of posts re:
Can't find /mach_kernel
I have an SSD w/ 2 partitions
1 Mtn Lion - works fine
2 Yosemite - only works with USB key and even then freezes up on me sometimes.

There are so many posts on this and none of the suggested fixes have worked for me.
I have MultiBeast 7.5. There's no .plist entries to remove and I have no idea what else to try.
Chimera v2.2.1 r2248

Please help!

 

[jlopez37]

My system is GA-X58A-UD3R running 10.8.5 . When I boot from the usb it says cannot find mach_kernel. I deleted this lines in /Extra/org.chameleon.Boot.plist:
<key>Kernel</key>
<string>mach_kernel</string>

But Yosemite displays still the same error "Can't find mach_kernel" so I can't reach the installer.
Regards.

 

[zmugu]

Sorry i never update from mavericks to yosemite, i save all the data and i install from the start yosemite and no problem.

 

[meet.nick]

Hello everyone,

My system is a Mac Pro 1,1 with Mountain Lion 10.7.5 and the following specs:
Processor 2 x 2.66 GHz Dual-Core Intel Xeon
Memory 17 GB 667 MHz DDR2 FB-DIMM
Graphics ATI Radeon HD 5770 1024 MB
Hard disks 1 SSD 250 GB and 2 RAID 1TB each

I tried everything mentioned in the first post of this thread but I am unable to boot from the USB stick inspite of adding the following lines:
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>PCIRootUID</key>
<string>1</string>

Could someone help me please?

 

[Stork]

Hello everyone,

My system is a Mac Pro 1,1 with Mountain Lion 10.7.5 and the following specs:
Processor 2 x 2.66 GHz Dual-Core Intel Xeon
Memory 17 GB 667 MHz DDR2 FB-DIMM
Graphics ATI Radeon HD 5770 1024 MB
Hard disks 1 SSD 250 GB and 2 RAID 1TB each

I tried everything mentioned in the first post of this thread but I am unable to boot from the USB stick inspite of adding the following lines:
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>PCIRootUID</key>
<string>1</string>

Could someone help me please?

The first thread is making a UniBeast created USB installation thumb driver for PC's. It will not install on a Mac Pro. If you are trying to install Yosemite on a MP 1,1, then I recommend you look for how to upgrade a 1,1 to a 2,1 at the MacRumor's Mac Pro forum section > http://forums.macrumors.com/forums/mac-pro.1/

 

[meet.nick]

The first thread is making a UniBeast created USB installation thumb driver for PC's. It will not install on a Mac Pro. If you are trying to install Yosemite on a MP 1,1, then I recommend you look for how to upgrade a 1,1 to a 2,1 at the MacRumor's Mac Pro forum section > http://forums.macrumors.com/forums/mac-pro.1/

Thanks a lot for your response.
Is the upgrade to the 2,1 necessary? I have found a few tutorials on upgrading to Yosemite on 1,1. None of them so far have worked though. I feel it has something to do with my hardware. The odd memory that I have - 17GB and the particular slots they have been installed in. What do you think?