Hope this is better.
The TOSHIBA is the internal hard disk with Windows.
The bottom one is the external drive with Ubuntu.
sudo lsblk
db@db-VivoBook-15-ASUS-Laptop-X540MA-X540MA:~$ sudo lsblk
[sudo] password for db:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 74.3M 1 loop /snap/core22/1612
loop1 7:1 0 4K 1 loop /snap/bare/5
loop2 7:2 0 73.9M 1 loop /snap/core22/2045
loop3 7:3 0 245.1M 1 loop /snap/firefox/6565
loop4 7:4 0 245.6M 1 loop /snap/firefox/6638
loop5 7:5 0 10.7M 1 loop /snap/firmware-updater/127
loop6 7:6 0 11.1M 1 loop /snap/firmware-updater/167
loop7 7:7 0 505.1M 1 loop /snap/gnome-42-2204/176
loop8 7:8 0 516M 1 loop /snap/gnome-42-2204/202
loop9 7:9 0 91.7M 1 loop /snap/gtk-common-themes/1535
loop10 7:10 0 10.5M 1 loop /snap/snap-store/1173
loop11 7:11 0 10.8M 1 loop /snap/snap-store/1270
loop12 7:12 0 38.8M 1 loop /snap/snapd/21759
loop13 7:13 0 49.3M 1 loop /snap/snapd/24792
loop14 7:14 0 500K 1 loop /snap/snapd-desktop-integration/178
loop15 7:15 0 576K 1 loop /snap/snapd-desktop-integration/315
loop16 7:16 0 210.4M 1 loop /snap/thunderbird/751
loop17 7:17 0 149.8M 1 loop /snap/thunderbird/509
sda 8:0 0 465.8G 0 disk
├─sda1 8:1 0 1G 0 part /boot/efi
└─sda2 8:2 0 464.7G 0 part /
sdb 8:16 0 465.8G 0 disk
├─sdb1 8:17 0 260M 0 part
├─sdb2 8:18 0 16M 0 part
├─sdb3 8:19 0 464.9G 0 part
└─sdb4 8:20 0 650M 0 part