When installing with Hammer2 (EFI, encrypted root and swap), after rebooting and decrypting the root I get an error saying `mount_hammer2` isn't found. Has anyone else had this issue and figured out if there's a fix?
You can build a new initrd - cd into src/share/initrd/sbin, add it to the makefile, type 'wmake install' I think, and you may be good. I am guessing because I don't have an encrypted disk to test.
Otherwise, wait and there will be an updated 5.01 image soon, I'm sure - the recent KRACK vulnerability will prompt that, if nothing else.
FreeBSD on the laptop has decent support, and in a couple of weeks you will learn about initrd etc. to be able to work with DragonflyBSD.
If you want to learn more about system internals, you might want to learn how to use bhyve (FreeBSD's awesome hypervisor) on FreeBSD. By trying to use bhyve you will learn how to extract the kernel from an img build, load it etc.
Have fun and good luck on your studies!