[Help] OpenCore USB installer doesn't show as bootable

Hardware:
CPU: Intel i7-5600U

Laptop: ThinkPad T450S

i followed this guide and all was going well (I'd like to mention that i was doing this from a linux machine), but when it comes to the point of putting the USB in my laptop and installing, it doesn't show as bootable, and gives me the BIOS error, no matter the flags i put on the partitions. I've redone the partition setup part of the guide a few times.

submitted by /u/headassbtw
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