I'm a real newbie with Linux and Ubuntu.
I bought an Asus laptop with 2 HDD. An SSD 256Go where I installed Ubuntu and and an HDD 1To.
I just want to move personnal files from my SSD to HDD.
This seems like a very common task but I don't know how to do it.
EDIT
lsblk
command
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 14,5M 1 loop /snap/gnome-logs/45
loop1 7:1 0 4M 1 loop /snap/gnome-calculator/352
loop2 7:2 0 91M 1 loop /snap/core/6350
loop3 7:3 0 34,6M 1 loop /snap/gtk-common-themes/818
loop4 7:4 0 1008K 1 loop /snap/gnome-logs/57
loop5 7:5 0 2,3M 1 loop /snap/gnome-calculator/260
loop6 7:6 0 13M 1 loop /snap/gnome-characters/139
loop7 7:7 0 3,7M 1 loop /snap/gnome-system-monitor/70
loop8 7:8 0 59M 1 loop /snap/notes/4
loop9 7:9 0 35,3M 1 loop /snap/gtk-common-themes/1198
loop10 7:10 0 140,7M 1 loop /snap/gnome-3-26-1604/82
loop11 7:11 0 89,3M 1 loop /snap/core/6673
loop12 7:12 0 53,7M 1 loop /snap/core18/782
loop13 7:13 0 14,8M 1 loop /snap/gnome-characters/206
loop14 7:14 0 3,7M 1 loop /snap/gnome-system-monitor/57
loop15 7:15 0 140,7M 1 loop /snap/gnome-3-26-1604/74
sda 8:0 0 931,5G 0 disk
└─sda1 8:1 0 931,5G 0 part
sdb 8:16 0 238,5G 0 disk
├─sdb1 8:17 0 260M 0 part /boot/efi
├─sdb2 8:18 0 16M 0 part
├─sdb3 8:19 0 146,3G 0 part
├─sdb4 8:20 0 800M 0 part
└─sdb5 8:21 0 91,2G 0 part /