A quick post since this isn’t well covered: FreeBSD on EFI systems still will hard-code the name enumerated at install time (like da0p2). There is a better way than using glabel (which injects itself into the last block of the partition, which can be problematic). Instead, you can use GPT labels, which are cross-platform and well-known.
First, replacing da1 with your disk, use gpart show to see what indices you need:
$ sudo gpart show da1
=> 40 501253056 da1 GPT (239G)
40 409600 1 efi (200M)
409640 492421120 2 freebsd-ufs (235G)
492830760 8388608 3 freebsd-swap (4.0G)
501219368 33728 - free - (16M)Then, run gpart modify to add labels, then you can run show with the -l flag to show labels:
$ sudo gpart modify -l illswap -i 3 da1
da1p3 modified
$ sudo gpart modify -l illroot -i 2 da1
da1p2 modified
$ sudo gpart show -l da1
=> 40 501253056 da1 GPT (239G)
40 409600 1 (null) (200M)
409640 492421120 2 illroot (235G)
492830760 8388608 3 illswap (4.0G)
501219368 33728 - free - (16M)The disks will appear in /dev/gpt, but they won’t appear right away. You can modify /etc/fstab though, and your changes (the enumeration by label and the new mount points) will work on reboot.
# Device Mountpoint FStype Options Dump Pass#
/dev/gpt/illroot / ufs rw,noatime 1 1
/dev/gpt/illswap none swap sw 0 0