Youyeetoo X1 Legacy boot mode (CSM)

youyeetoo X1 SBC is base on the Intel 11th Gen CPU N5105,Quad-Core 4 Thread 10nm TDP is 10W,

My ultimate aim is to have my X1 dual boot to the supplied windows and a custom linux system (SystemD LFS/BLFS) I am testing. My first problem is that my install tools are on a legacy USB drive. For my First question, is it posible to configure the X1 to boot either just Legacy (CSM) or Legacy and UEFI. I been through the bios and I cannot see anything obvious that will enable this.

Thanks

Hello youyeetoo X1 only support UEFI boot mode.