My Raspberry Pi with HassOS doesn't see my 5 TB hard drive connected to it via usb

As the title says.

hassio hardware info prints:

audio:
  "0":
    devices:
    - chan_id: "0"
      chan_type: digital audio playback
    - chan_id: "1"
      chan_type: digital audio playback
    - chan_id: "2"
      chan_type: digital audio playback
    name: bcm2835_alsa - bcm2835 ALSA
    type: ALSA
disk:
- /dev/mmcblk0
- /dev/mmcblk0p7
- /dev/mmcblk0p5
- /dev/mmcblk0p3
- /dev/mmcblk0p1
- /dev/mmcblk0p6
- /dev/mmcblk0p2
- /dev/mmcblk0p4
- /dev/mmcblk0p8
gpio:
- gpiochip100
- gpiochip504
- gpiochip0
input: []
serial:
- /dev/ttyAMA0

and df -h prints:

Filesystem                Size      Used Available Use% Mounted on
overlay                  57.8G      4.7G     50.1G   9% /
tmpfs                    64.0M         0     64.0M   0% /dev
tmpfs                     1.9G         0      1.9G   0% /sys/fs/cgroup
shm                      64.0M         0     64.0M   0% /dev/shm
/dev/root                92.3M     92.3M         0 100% /sbin/docker-init
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /backup
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /share
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /data
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /config
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /ssl
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /addons
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /etc/resolv.conf
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /etc/hostname
/dev/mmcblk0p8           57.8G      4.7G     50.1G   9% /etc/hosts
tmpfs                     1.9G         0      1.9G   0% /proc/asound
tmpfs                    64.0M         0     64.0M   0% /proc/keys
tmpfs                    64.0M         0     64.0M   0% /proc/latency_stats
tmpfs                    64.0M         0     64.0M   0% /proc/timer_list
tmpfs                    64.0M         0     64.0M   0% /proc/sched_debug
tmpfs                     1.9G         0      1.9G   0% /sys/firmware

Is the drive being powered from the USB or external source? Chances are that the drive isn’t getting enough power through the onboard USB.

From the USB, as it’s the only available connection.

I’m not sure it’s actually possible to just connect a drive to the rpi? I tried now with a HDD with external power and it’s not recognized either.

Would really like it though!