How to persistently store (DVB-T2 USB stick firmware) files under /share/?

Hello!

I’m running HAOS alright, but I need 3 firmware files for my DVB-T2 USB stick stored persistently under /share/ (well, I assume that this would be the right place to get them loaded upon boot with the correct boot parameters). The problem is that after a reboot, the folder /share/ is empty again, i.e. files stored there do not seem to survive a (re)boot.

Am I maybe missing something obvious? Can somebody with more profound knowledge please nudge me into the right direction? I appreciate your help very much - thank you! :slight_smile:

PS for your information, showing the 3 firmware files (last 3 rows) I stored there (before they vanish after a reboot):

| |  | |                          /\           (_)   | |            | |
| |__| | ___  _ __ ___   ___     /  \   ___ ___ _ ___| |_ __ _ _ __ | |_
|  __  |/ _ \| '_ \ _ \ / _ \   / /\ \ / __/ __| / __| __/ _\ | '_ \| __|
| |  | | (_) | | | | | |  __/  / ____ \\__ \__ \ \__ \ || (_| | | | | |_
|_|  |_|\___/|_| |_| |_|\___| /_/    \_\___/___/_|___/\__\__,_|_| |_|\__|

Welcome to the Home Assistant command line.

System information
  IPv4 addresses for eth0:  192.168.11.55/24
  IPv6 addresses for eth0:  xxxx::xxxx:xxxx:xxxx:xxxx/64
  IPv4 addresses for wlan0:

  OS Version:               Home Assistant OS 10.3
  Home Assistant Core:      2023.7.3

  Home Assistant URL:       http://homeassistant.local:8123
  Observer URL:             http://homeassistant.local:4357
➜  ~ ll /share
total 16K
-rw-r--r--    1 root     root        2.7K Jul 23 20:53 dvb-demod-si2168-02.fw
-rw-r--r--    1 root     root        6.8K Jul 23 20:54 dvb-demod-si2168-b40-01.fw
-rw-r--r--    1 root     root        2.1K Jul 23 20:53 dvb-usb-it9303-01.fw

Is there really nobody who can provide me with a hint how to accomplish this?