Unibeast/Yosemite USB freezes halfway through loading installer; shows "NO" symbol (pictured)

[Richie3000]

Having an issue loading the Yosemite installer through Unibeast.

The actual creation of a Unibeast installer flash drive went fine (or so it appeared) - but upon actually trying to load Yosemite from the USB stick (for the installation) I get the famous NO symbol (circle with a cross through it - picture attached).

So far I've tried with a USB stick using "legacy USB" support and once without. Same result each time.

Any suggestions?

*Running a Gigabyte GA-Z77X-UD5H, i7-3770k, NVIDIA GeForce GTX 670, Mavericks 10.9.5

 

[olegoode]

If this is an upgrade install from Mavericks, try moving your SMBIOS.plist from /Extra to the /Extra folder on the flash drive.

 

[OmarCCX]

Getting the same error on a Z77 UD3H.

 

[Richie3000]

If this is an upgrade install from Mavericks, try moving your SMBIOS.plist from /Extra to the /Extra folder on the flash drive.

Thank you for the info!

I see the SMBIOS.plist in my Extra folder, but I can't seem to find the Extra folder located on the USB (doesn't seem to be buried anywhere in the Installer after "showing package contents")...

 

[BrunoNFL]

Boot it in verbose mode (-v) só that we can have more information on where it's stuck

 

[olegoode]

It's hidden. Do this in Terminal:

[COLOR=#000000][FONT=source-code-pro-1]defaults write com.apple.finder AppleShowAllFiles YES
[/FONT][/COLOR]killall Finder

Then to open the Extra folder on your flash drive right-click it and Open in New Tab. Backup and then Trash the SMBIOS.plist and drag in the one from Mavericks.

 

[Richie3000]

thanks for that Terminal code!

Copied over the SMBIOS.plist as instructed and then booted up in -v and got the following results where it seemed to hang up:

 

[olegoode]

And with PCIRootUID=0 ?

 

[mewannamac]

I have gotten past that by making sure the USB drive is plugged into an USB2 port instead of a USB3

 

[OmarCCX]

I have gotten past that by making sure the USB drive is plugged into an USB2 port instead of a USB3

That fixed it for me. Thanks.