The Orbis NoBD HDD Guide will only work if you have previously backed up your HDD when it was working using the NoBD Toolkit.
If you haven’t already done that then it’s game over as you need those original HDD partitions written back to your new...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi