IOS 10.9.4 new installation on GA-Z77X-UD3H - need help

[grynr]

I start the installation all is well until about 21 minutes left to install 10.9.4 ... and I get an error message and it stops...
I tried 3 times and it stops at the same time stamps....
what am I doing wrong?????
Please

 

[beelzebozo]

Are you using Mavericks from the Mac App Store, along with the tonymacx86 installation tools?

 

[KingBfire]

Mavericks Problems GA-Z87X-UD5H Error Mac OS Installer

i have the same problem - after "21 minutes left" this error message...

i am using the motherboard GAZ87X-UD5H and i7 4790....

tried it several times with the different instalation options - every time same error ...

any solutions?

EDIT: Found the solution! Dont plug in the USB Installation Drive to an USB 3.0 Port - Use a USB 2.0 Hub or something similar Done