When a USB flash disk is installed with Kali, the cd-rom cannot be mounted.

When a USB flash disk is installed with Kali, the cd-rom cannot be mounted.

During the installation of Kali Linux with a USB flash drive, the cd-rom cannot be mounted. Baidu has a poor performance and is drunk.
The following test is successful:

If the mounting fails, run shell.

Step 1: df-m
The mount information is displayed./dev/***/media indicates that the USB flash drive device is mounted to/media, and the cd-rom cannot be mounted.

Step 2: umount/media

Step 3: exit
Exit the shell window and continue the installation. In this case, the system can be installed normally.