Wrong capacity local storage

Hi,
Here’s my lsblk infos:

admin@photographe:~ $ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 4.6T 0 disk
mmcblk0 179:0 0 29.8G 0 disk
├─mmcblk0p1 179:1 0 256M 0 part /boot
└─mmcblk0p2 179:2 0 29.6G 0 part /
zram0 254:0 0 230.8M 0 disk [SWAP]
zram1 254:1 0 230.8M 0 disk [SWAP]
zram2 254:2 0 230.8M 0 disk [SWAP]
zram3 254:3 0 230.8M 0 disk [SWAP]

As you can see, I have a 5tb disk. In Nextcloud local storage, it’s perfectly detected on this path: /media/storage

But, when I want to put medias on it, Nextcloud says that it’s full… Only 1.9gb is usable… Why ?

Thanks in advance,
All the best, Sly

I’ve formatted and remounted, actually, the status is “waiting” for the capacity…