I’ve been trying to install elementary on my mid 2010 17" mbp. I’ve created a few different flash drives using both Etcher and DD. I’ve even verified the ISO hash. No matter what media I use I wind up here after selecting the bootable usb. Google has not been helpful in figuring this out. Anyone else seen this?


What I’ve learned from installing Arch on a 2007 (I think) MacBook is that Apple uses (or used) some mangled EFI implementation that doesn’t always jive with standard bootable devices.
I had to install rEFIt to get the Arch stick to boot. Nowadays rEFInd may also be a good fit.