CHKDSK with Windows XP Home SP1 and NTFS Hard Disk

For unknown reason a chkdsk request has appeared for my principal hard disk formatted as NTFS with OS Windows XP SP1. I cannot access the /r coammnd with chkdsk in run which only functions as a read command and will not correct the apparent error. As a consequence my defragmentation program Diskeeper 8.0 will not defragment the disk. I ahve not been able to run the recovery Console during startup and so cannot run chkdsk during starup. As the disk is functioning well with XP I do not want to reformat in FAT to use a DOS program to clear the chkdsk command which is probably a false one. Any suggestions will be welcome