About mount point in jetson nano emmc module

Hello,

I am using a jetson nano to make nvr software.

I am using it to save video by connecting a sata hard drive to the path named /mnt/C.
When the /mnt/C mount is unmounted, the image is saved in emmc (16GB) and the emmc capacity becomes full.
How can I prevent images from being saved to emmc even if /mnt/C is unmounted?
Can you give me some advice?

Thank you.

Should you check the capacity of eMMC before saving any video clip?

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Hello,

No,
If /mnt/C is unmounted, video clips should not be saved in emmc.
Because emmc has a small capacity, if you save video clips, the capacity will fill up in a short time and Jetson may not work properly.

Thank you.

Is it application implementaion issue?

Besides, it seems you keep asking the same question because you didn’t know how to make the board boot from your usb drive…

We have already replied your post yesterday , could you make sure to get understanding of our replies first.

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After unmounting you could remove the subdirectory β€œC/”, and then create a symbolic link of the same name to β€œ/dev/null”. Then, before mounting, delete the symbolic link and make the subdirectory β€œC/” again.

If β€œ/mnt” exists, but there is no subdirectory β€œC/”, then an example for making the symbolic link:
sudo ln -s /dev/null /mnt/C
(then any write to this location would be silently thrown away)

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Hello,

Thank you very much.

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