At lest the hardware was ready at that point. B, C. Both the hidden and system attributes for a file hides the file. These files do not appear when you do a DIR of a directory, and therefore lead you to believe you have more space on your hard disk than you do. These are the files that will be copied to the new disk. The basic network topologies are ring, star, and bus.
Ethernet is a popular architecture.
At each bootup. If the error continues, there may be a problem with the memory socket on the motherboard. If a server goes down in a ring or bus network, only the host is not accessible. You can change the attributes of the DOS prompt.