https://community.acer.com/en/discussion/17003/how-i-can-format-nav550-aspire-one-with-usb-2-0-pend-drive
How i can format Nav550 (aspire One) with Usb 2.0 pend drive - Acer Community
How i can format Nav550 (aspire One 532h-2Bb) with Usb 2.0 pend drive