Mary adds the first SCSI disk to a Linux system that currently has only IDE drives. The system is not recognizing the new disk. Which of the following commands should she employ to troubleshoot the problem? (Choose all that apply.)
A. ls /sys/bus/scsi/drivers
B. pvscan /dev/vg00/lvol0
C. lsmod | grep module-name
D. hdparm -B 127 device-filename
E. smartctl -a
