Boot from SSD

I followed these steps from an old jetson hacks video. However, the final screen looks different and the system would not boot. What are the changes for jetpack 4.4 to boot from SSD?

answered my own question. Used jetsonhacks to format ssd, then this

DEFAULT primary

MENU TITLE L4T boot options

LABEL primary
MENU LABEL primary kernel
LINUX /boot/Image
INITRD /boot/initrd
APPEND {cbootargs} root=/dev/sda1 rw rootwait rootfstype=ext4 #APPEND {cbootargs} quiet