I am using a USB Stick as a boot disk.
Is it possible to use any file system on a boot disk and mark it as bootable, or it has to be FAT only?
Can it be a ext4 partition instead of FAT?
I am using the following commands to flash my usb stick with an OS image, but Is there any reason why FAT was chosen here:
sudo mkfs.fat -I /dev/sdX
What is the technical signifigance of -I here.
isohybrid isofile.iso --entry 4 --type 0x1c dd if=isofile.iso of=/dev/sdX bs=1M
Can I also use --entry 4 and --type 0x83? What is the significance of this line? I tested with 0x83, but it failed to boot. With 0x1c, it works fine.