I updated the motherboard bios from F6 to F9, but boot is still hanging at "boot 0: done".
I had this
bizarre boot 0 done error today and it took several hours of basic trial and error to finally fix it by chance. I don’t really know the exact cause of it and hence the fix can be considered a chance occurrence just like the error that befell my very healthy Desktop
I had a perfectly working
Multi-boot System with
5 Oses running from
5 independent SATA HDDS 1-2 TB each
· Yos 10.10.3
· Mavericks and
· Mountain Lion
· Windows 8
· Linux DreamStudio 12.04
Hardware Specs
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MoBo: GA-Z-77X-UP4-Th MoB with integrated LAN Realtek 8111 and
Video (Intel HD4000) and onboard
Intel HD Audio
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CPU: 3.7 GHZ i7
I wanted to try an
XFX Radeon R 7850 video card i
n place of its perfectly working i
ntegrated Intel HD 4000 and brought on the disaster on my system. I had a new
ASUS VK2780 monitor with Display port I wanted too test and hence got this
Radeon , the very
first time I am installing AMD video card in OSX system although I knew this card will work very well in my Windows and Linux.
I realized I had blundered buying this card which has a
mini Display port and the
Monitor has Standard Display port and I had bought
cable for the bigger standard DP! I realized I couldn't test
DiaPlay Port today! I have to get a Mini to Standard DP cable.
The
PSU in the system was a
Corsair HX 750 but I had misplaced its previously unusable
PCIE Power cable (detachable) and hence
had to change the entire
PSU with a new
EVGA 850 that had plenty of
Power cables including PCIE PWR ( 6 & 8 pins)
When I finally inserted the PCIE Video card, new PSU and connected the PCIE Power Cable to the PCIE card, the HDMI cable from its HDMI port to
Asus Monitor HDMI , Powered the Monitor and PC and entered
BIOS setup and
changed Video from
IGX to PCIE and booted the
Yosemite containing HDD as # 1 as usual the screen went like this:
After trying the same treatment for
boot0 error and failing ( I could not even use the previously healthy Unibeast Yosemite USB Installer as that too came down with the same error. ) I tried to see if my Windows and Linux would boot OK. They did. Then I booted
Mavericks.
I booted to
Mavericks Desktop and navigated to
Yosemite HDD's /Extra/Org.Chameleon.Boot.plist and
edited it and
saved
After each
random choices of
Boot flags and rebooting and
trying Yosemite boots, on one occasion it did not show that error and
verbal boot went on to
log-in although there was a brief mention of "errors' . I was too tired to use my Camera to take Screen images or videos.
When I went back and checked my
plist . I am attaching a copy of it.
Obviously I had only a single incidence of this error and I have
not tested the above on multiple occasions to see if there is any connection .
All subsequent boots show everything back to normal on new Video card and Monitor on HDMI
I will be trying Display Port when I get the proper cable. If by 'luck' I get the same error again , I can try the this highly "experimental treatment" with full video documentation.
I want to caution everyone that I have not established any cause and effect and this is just an empirical observation.