单选题Which of the following problems has occurred when a menu appears and prompts the user to "copy a dump to external media?（）AThe external dump device is full. BThe dump device was set to /dev/hd7 before the dump happened. CThe boot failed while copying t
题目
单选题
Which of the following problems has occurred when a menu appears and prompts the user to "copy a dump to external media?（）
A
The external dump device is full.
B
The dump device was set to /dev/hd7 before the dump happened.
C
The boot failed while copying the dump from paging space to a file.
D
The dump device was not set to a paging device before the dump happened.