External disk always disapper after reboot

hello

i installed umbrel os on pc and installed jelyfin i used Gemini to configure jelifin so i can see the disk but it always disappear after reboot what can i do?

New feature of umbrelOS v1.7.x … custom-hooks …

Look into that!

Basically on boot up … you can have it run commands as root …

Here is an example of mine to get what I want:

$ cat /home/umbrel/umbrel/custom-hooks/pre-start
apt update && apt install bc jq curl tmux qemu-guest-agent -y
systemctl start qemu-guest-agent

if ! mountpoint -q /home/umbrel/umbrel/app-data/bitcoin; then
mount UUID=58bd25e6-dc97-48fa-a256-e15e328dfea4 /home/umbrel/umbrel/app-data/bitcoin
fi

cp /home/umbrel/umbrel/custom-hooks/system.ts /opt/umbreld/source/modules/system/system.ts
cp /home/umbrel/umbrel/custom-hooks/index.html /opt/umbreld/ui/index.html

Ahh maybe that is why my backup keeps failing… I noticed when rebooting my Umbrel that the 2TB HDD I have attached via USB-C was disconnected (blue light still on the drive) and I would get a message that my backup had failed.