I'm trying to install Arch on a USB bat when I try to boot both i686 and x86_64 I get the looping error "error '/dev/mapper/arch_root-image' device did not show up after 30 seconds"
and it never gives me the prompt so I can only reboot.
I can't find any solution on Google. I hope you could help me.
PS: I'm sorry for my bad english.
Welcome to Arch!
Please search before posting. The wiki is your friend. https://wiki.archlinux.org/index.php/Usb_install