Dear eldest brother, let me ask a question, my computer SSD win10, want to be in mechanical drives include a debian10.1, down a debian10.1 of the desktop, a startup disk, installation is normal, I'm going to replace the debian with desktop, and then go to a debian10.1 live kde mirror, make the startup disk, but unable to enter after U disk to start the installation interface, but entered the grub command line, I thought it was a mirror is broken, again in a mirror, a variety of methods are not, to solve, thank you