Boot Macbook Air from SD backup

[Zarkov]

As everyone knows, a Macbook Air has two USB ports (and a Thunderbolt port) but no Firewire port. Since SD backups will almost always boot a Mac via Firewire, but only sometimes via USB ports, I wondered if I could boot my new Air via USB SD backup.

It worked! (mid-2011 Air, i7 processor, SD 2.6.4, build 89; Hitachi G-Drive mini)

Just FYI.

[dnanian]

USB should work on Intel Macs (assuming full drive compatibility), but not on Power PC Macs (6+ year old models). USB does sometimes have power issues, though, because drives are power hungry and ports don't provide much.