We add our own GDT so that we can select the correct code and data segments for the next video about interrupts - allowing us to do things like catch and handle faults, and use PS/2 Keyboard and Mouse, and PIT timers.

➤Discord: 
https://discordapp.com/invite/p2JYhr9

➤Github: 
https://github.com/Absurdponcho/PonchoOS/tree/Episode-10-GDT

➤Patreon: 
https://www.patreon.com/PonchoYT

➤UEFI Specification: 
https://www.uefi.org/specifications

➤Helpful Links:
https://wiki.osdev.org/Global_Descriptor_Table
https://wiki.osdev.org/UEFI
https://wiki.osdev.org/ACPI
https://blog.llandsmeer.com/tech/2019/07/21/uefi-x64-userland.html

0:00 Intro
0:27 Creating the GDT structs
5:06 Creating the GDT
7:07 Adding an assembler to the toolchain
11:06 Writing our LoadGDT Function
16:35 Success