Creating presistent USB: Cant create persistence.conf

[Blockmover]

Hello everyone,

I'm just about to start using Kali but an problem have came up that I'll hope you can help me with.


Made an live-usb with the official guide and everything works great.
The problem is with adding unencrypted persistence.

Fourth and last step:

4. Create a mount point, mount the new partition there, and then create the configuration file to enable persistence. Finally, unmount the partition.

mkdir -p /mnt/my_usb
mount /dev/sdb3 /mnt/my_usb
echo "/ union" > /mnt/my_usb/persistence.conf
umount /dev/sdb3

Everything in the guide works fine until

echo "/ union" > /mnt/my_usb/persistence.conf

Then I'll get

bash: /mnt/my_usb/persistence.conf: Permission denied

Also I'm quite new to Linux in general and struggling to understand what the command actually do.

echo "/ union" > /mnt/my_usb/persistence.conf

My interpretation is that the program union will create presistence.conf but google does not seem to have any reference to such a program.

If that is the case, union is not installed and bash tells me that i can install it with:

sudo apt-get install emboss

...and thats seems to be a package with over 150 programs to work with DNA and proteins.

Any idea whats going on and how to solve this?

[Blockmover]

Solved it.

For future reference it was some ting with my privileges in Ubuntu so just boot the Kali stick and do it there instead.

echo "/ union" > /mnt/my_usb/persistence.conf

Still interested in what the "/ union" command does if anyone knows.