Win7 cleaning c disk prompts disk Check can not be performed?

1, open the lower left corner of the computer "Start" menu, find a hit "Run" option, click Open;

2, in the pop-up running dialog box input "cmd", click OK, enter the DOS interface;

3, enter the command line interface, input "for%i in (c D E F g h) do Chkdsk%i:/F" command, click Enter;

4, click Return, you will find that the disk is occupied can not check, prompts us whether the next boot check, input n, click Enter;

5, at this time the computer restart, into Safe mode, in the DOS interface, input "chkdsk C:/f/r";

6, click Enter, start to check our computer disk, at this time will not be used in the reminder disk is not accessible, you can do disk inspection.