Linux graphical interface disappeared

X failed to start, Linux issue so LinuxCNC can not work, so here is a narrowed down search for it:
www.google.com/search?q=debian+x+server+...IcAkMQ4dUDCAY&uact=5

If there is nothing important, the easiest way is to do a new install and then follow Beagle's instructions on adding calibration.

Mr. wrote:

Sound like a plan. It remains to figure out exactly how can do this from the command line.

There are a few ways to do it described here:
askubuntu.com/questions/37767/how-to-acc...ve-from-the-terminal

Basically you need to "mount" the USB drive, which means setting it up to be a directory in your file system. From that point on any file that you place in that directory will end up physically on the USB drive.

Once you have it mounted, you would use the "cp" copy command. something like
sudo cp -r ~/linuxcnc/ /media/usbdrive

"sudo" because you might not have access rights to where the usb drive is mounted. Unless you mount it somewhere in your home folder, which you can, if you want.
"cp" is copy
"~" is a shortcut to your own home directory, then from there we select the linuxcnc subdirectory
"-r" for "recursive", ie iterate through everything in the directory.
"/media/usbdrive" should be whatever mount-point you chose to mount the USB.