I have an UEFI-motherboard - ASUS P8Z77-MPRO. It supports CSM(Compatible Support Module). My Win7 is installed in BIOS mode, I've checked it. This because, I must install ArchLinux in the same way(BIOS) to avoid problems with dual-boot system as said in the documentation. But when I'm booting in with my USB it enters in UEFI-mode installation:
I changed the state of CSM from "Auto" to "Enabled", marked "Fastboot" as "Disabled" and so I did with "SecureBoot" (Actually, the last one was aslready been marked).
How can I boot with USB not in UEFI mode?