Multiboot Config

Create a Multi bootable USB flash drive

Format USB dirve

https://wiki.networksecuritytoolkit.org/nstwiki/index.php?title=HowTo_Create_A_GPT_Disk_With_EFI_System_And_exFAT_Partitions_Using_Parted

Install GRUB

https://wiki.archlinux.org/title/Multiboot_USB_drive#Installing_GRUB

Install Autoiso

git clone https://github.com/jim945/autoiso-multiboot.git
cd autoiso-multiboot
sudo rsync --recursive --times --progress --verbose --delete --exclude=.git --exclude='*.md' . /mnt/boot/grub/autoiso

Install Memtest86+

Download memtest86

cd ~/Downloads

mkdir memtest86
unzip -d memtest86 memtest86-usb.zip

cd memtest86
mkdir ./tmp
sudo mount -o loop,offset=$(( $(fdisk -lu memtest86-usb.img | awk '/EFI System/ {print $2}') * 512 )) ./memtest86-usb.img ~/Downloads/memtest86/tmp
rsync --times --progress --verbose ./tmp/EFI/BOOT/ /mnt/boot/memtest86+