Disk /dev/nvme1n1: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: Sandisk Optimus GX 7100 2TB             
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 32768 bytes / 262144 bytes
Disklabel type: gpt
Disk identifier: 5C7B6604-8232-4AD3-8200-8DB63B84FAD8

Device              Start        End    Sectors  Size Type
/dev/nvme1n1p1       2048     264191     262144  128M EFI System
/dev/nvme1n1p2     264192 3840421887 3840157696  1.8T NetBSD FFS
/dev/nvme1n1p3 3840421888 3907029134   66607247 31.8G NetBSD swap

techokami@markv:~$ sudo mount -t ufs -o ufstype=44bsd /dev/nvme1n1p2 /mnt/NetBSD/
mount: /mnt/NetBSD: wrong fs type, bad option, bad superblock on /dev/nvme1n1p2, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.
techokami@markv:~$ 

[ 4482.773351] ufs: ufs was compiled with read-only support, can't be mounted as read-write
[ 4482.774094] ufs: ufs_fill_super(): bad magic number