./usbcopy OI-hipster-gui-20160421.usb
Password:
Found the following USB devices:
0:	/dev/rdsk/c7t0d0p0	3.9 GB	USB      DISK 2.0         1.00
Enter the number of your choice: 0

WARNING: All data on your USB storage will be lost.
Are you sure you want to install to
USB DISK 2.0 1.00, 3900 MB at /dev/rdsk/c7t0d0p0 ?  (y/n) y
Copying and verifying image to USB device
Finished 1643 MB in 668 seconds (2.4MB/s)
0 block(s) re-written due to verification failure
Installing grub to USB device /dev/rdsk/c7t0d0s0
Completed copy to USB