Sorry, but I just wanna ask something, it looks like stupid question but I need to get an answer. Here, I have to point the sda2 with EFI, right? Not sd7, which will be empty for the new Arch LInux? I just wanna not make mistakes:)

Device Start End            Sectors    Size    Type
/dev/sda1 2048 616447      614400    300M Windows recovery environment
/dev/sda2 616448 821247    204800      100M     EFI System
/dev/sda3 821248 1083391    262144        128M   Microsoft reserved
/dev/sda4 1083392 362373119   361289728   172,3G Microsoft basic data
/dev/sda5 362373120 812933119 450560000 214,8G Microsoft basic data
/dev/sda6 812933120 836370431    23437312 11,2G Linux swap
/dev/sda7 836370432 976771071 140400640 66,9G Linux filesystem