As I begin to copy my c: drive to j:, Drive Copy checks both and reports "System restart is required . . . The operation Disk copy needs exclusive access to the volume C: and cannot be completed without system restart. After restart, the operation will continue in boot-time mode. Do not turn off the computer until the operation completes." Then choices of "Restart" or "Retry" are offered. 1) I don't understand the meaning of the first sentence- "the operation Disk copy needs exclusive access" Huh? 2) Next sentence- after doing a system restart the operation (what operation?) does not continue in boot-time mode. Nothing starts- it just sits there and does nothing. Not that the message or directions indicate it, but I conclude running chkdsk is necessary. After running 'chkdsk c: /f', it gives me the same message. How can I get out of this endless loop and get my drive copied?