Without knowing it, the Director gave a play of "software dog ".

I have used a software dog. When using a small boss program, you must insert a usb software dog to use it normally.

I was wondering: What is the principle of a software dog?

Probably put a license in the usb software dog.

When installing diab today, when selecting the license dialog box, I did not pay attention to selecting K: disk, which is one of the partitions on my mobile hard disk. Then I removed the mobile hard disk and ran diab to compile the program. The result showed that license. dat could not be found. I can't reinstall diab 6 or 7 times. I'm depressed. Even if I select the license to my local hard disk, I will try to restart the disk at K. It may be because the registry will automatically change to the initial path.

Run cmd, enter set to view the environment variables of the system, and find that the license path LM_LICENSE_PATH of diab is on the K disk. In addition, it's strange and strange to add "course materials" to a folder on my K drive path. It's really depressing to plug in the mobile hard drive, rename the "embeded course materials" folder, and then you can use diab.