Creating Recovery Discs to a USB Flash Drive (Windows 7)

Hi,

Understand from this FAQ, we can create recovery disc to USB flash drive, as long as the flash drive size not exceeding 32GB and not Windows 8 compatible.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01867124&lc=en&cc=us&dlc=en#N1014

Question: Can I use this one "HP 32 GB Flash Drive P-FD32GHP165-GE"

http://www.amazon.com/HP-32-Flash-Drive-P-FD32GHP165-GE/dp/B0052WT1OC/ref=cm_cd_al_qh_dp_t

How to configure the system to search for the plugged usb flash drive containing "recovery disc" when rebooting?

What's the disadvantage of using USB flash drive?

Thank you.