If you are using a system with multiple disk devices you need to make sure of you are targeting the right disk, so start with listing your devices. By doing this you will determine which device you will target for the installation.
All your disk devices will be listed - including your removable devices.
Removable devices will have 1 in the RM column of the output.
List the devices using the command lsblk. Depending on your system your output may look like this
# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 52.5M 1 loop /run/miso/sfs/livefs loop0 7:1 0 501.3M 1 loop /run/miso/sfs/rootfs sda 8:0 0 128G 0 disk sr0 11:0 1 617.4M 0 rom /run/miso/bootmnt