Encontrei algum tópico semelhante, mas nada que responda à minha pergunta.
O Gparted mostra que 2,47 TB do meu HDD são usados, embora o nautilus mostre que os dados consomem apenas 1,3 TB. Não consigo encontrar uma razão para a diferença.
$ sudo ls -lh /media/simon/Intern_4TB
total 1,3T
drwx------ 2 simon simon 16K Jun 28 2021 lost+found
-rw------- 1 simon simon 330K Feb 1 2022 ncp-config_20220201.tar
-rwxrwxr-x 1 simon simon 330K Jun 25 18:09 ncp-config_20220307.tar
-rw------- 1 simon simon 330K Sep 11 20:10 ncp-config_20220911.tar
-rw-r----- 1 simon simon 638G Jun 25 14:43 nextcloud-bkp_20220615_1655310051.tar
-rw-r----- 1 simon simon 680G Sep 22 07:53 nextcloud-bkp_20220922_1663815603.tar
-rw-rw-r-- 1 simon simon 11G Feb 5 2022 OpenHAB-2022-02-05.tar.gz
simon@simon-sff:~$ sudo ls -lh /media/simon/Intern_4TB/lost+found
total 0
$ sudo lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
*....I shortened this part as I use ZFS and there is a long list.*
sda 8:0 0 238,5G 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
└─sda2 8:2 0 238G 0 part /
sdb 8:16 0 3,7T 0 disk /media/simon/Intern_4TB
...
