A couple of additional notes:
After install if "-v -x" results in stalling at a "Uptime in Nanoseconds" then just use "-x"
If you get the boot0: error issue. This is common for 1TB drives, especially Western Digital.
Upon successful installation, boot from hard drive results in this:
Loading Operating System …
boot0: GPT
boot0: test
boot0: test
boot0: GPT
boot0: test
boot0: test
boot0: error
The Actual Problem:
With disk drives getting larger and larger manufacturers have had to change the default block size from 512 bytes to 4,096 bytes. These new drives are known as "Advanced Format" or 4K drives. Initially this was only seen on drives larger than 1 TB but will soon be on all drives. As part of this change there is an issue with OS X writing the boot helper code to these drives when booted from the drive. Because of this they require a workaround to boot on their own...