You don't edit label "c".
Label "c" is a virtual label, containing the size of the slice. The sizes of each "c" label should be the same as reported by
fdisk
To be able to mount labels "d" of slice 1 and 2, they need to contain a filesystem, in other words they need to be formatted.
Code:
# newfs /dev/ad4s1d
# newfs /dev/ad4s2d
WARNING: this will destroy any data that these "d" partitions may contain.
After the
newfs, you should be able to mount these "d' partitions manually
Code:
# mount /dev/ad4s1d /mnt
You now should be able to run
and see the size and other stats of this "d" partition.
I would suggest to create two directories, unmount the currently mounted one (ad4s1d), and manually mount on these directories
Code:
# mkdir -p /350gb /50gb
# umount /mnt
# mount /dev/ad4s1d /350gb
# mount /dev/ad4s2s /50gb
Rerun
mount and
df -h commands to check. Only when everything is OK, only then modify "/etc/fstab" and reboot