This machine's firmware has started the installer in UEFI mode but it looks like there may be existing operating systems already installed using "BIOS compatibility mode". If you continue to install Debian in UEFI mode, it might be difficult to reboot the machine into any BIOS-mode operating systems later.
Aɣrab n tmes n tmacint-a isenker asebdad deg uskar UEFI maca yettban belli llan inagrawen n wammud ttusbedden yakan s useqdec n uskar n umṣada n BIOS". Ma yella tkemmleḍ asebded n Debian deg uskar UEFI, yezmer ad yiwɛir usenker n tmacint i tikkelt-nniḍen deg unagraw n wamudd deg uskar n BIOS mbeɛd.