Mount error

From some initial research, there may be a conflict unpacking .7z files on OS-X. I tried creating images in 3 different ways, with the native unzip as described on the Nvidia imaging page, with the Unarchiver, and with a homebrew install of 7zip. The JetsonNano.7z unpacks into a .img file (which is required for both Imager and Etcher, as neither support .7z), and after several attempts in various ways (using both imager, etcher, and cmd line instructions ) the same thing happens at every boot attempt, as follows:

[   1.177435] tegradc tegradc.1: dpd enable lookup fail:-19
[   1.385966] imx219 7-0010: imx219_board_setup: error during i2c read probe (-121)
[   1.386098] imx219 7-0010: board setup failed
[   1.410380] imx219 8-0010: imx219_board_setup: error during i2c read probe (-121)
[   1.410457] imx219 8-0010: board setup failed
mount: /mnt: wrong fs type, bad option, bad superblock on /dev/mcblk0p1, missing codepage or helper program, or other error.
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell
bash-4.4#

ls shows standard directories and in the /dev/ folder shows mmcblk0 through mmcblk0p9

This image was procured from Qengineering
Is there a mounting procedure that can correct this from here?

The kernel cmdline decides the location to mount.

https://forums.developer.nvidia.com/t/boot-from-external-drive/182883/2

Your current log says your try to mount the file system from " /dev/mcblk0p1"…

It appears the issue may be related to how the image was packed during compression. Mounting the SD card from a .zip made a bootable image without issue.

I am not sure I am knowledgeable enough that the link you provided was helpful, as I do not have an extensive understanding of the differences with “Boot Kernal from external drive” and “Mount rootfs from external drive” but this issue was specific to using an SD card.