pi@raspberrypi:~$ sudo losetup /dev/loop0
loop: can't get info on device /dev/loop0: No such device or address
pi@raspberrypi:~$ sudo losetup /dev/loop0 /home/pi/CSCI331MID.img 
pi@raspberrypi:~$ ls -l /dev/loop0
brw-rw---T 1 root disk 7, 0 Mar 31 10:57 /dev/loop0
pi@raspberrypi:~$ sudo mount -r /dev/loop0 /tmp/csci331mid/
pi@raspberrypi:~$ ls -l /tmp/csci331mid/
total 64
-rwxr-xr-x 1 root root  387 Jan 13  2013 commonnav.html
-rwxr-xr-x 1 root root 1882 Feb 25  2013 exam1.html
drwxr-xr-x 2 root root 4096 Mar  3  2013 exams
-rwxr-xr-x 1 root root 2424 Mar  3  2013 exams.shtml
drwxr-xr-x 2 root root 4096 Mar 25  2013 homework
-rwxr-xr-x 1 root root 2342 Mar 21  2013 homework.shtml
-rwxr-xr-x 1 root root 1771 Mar 21  2013 index.shtml
drwxr-xr-x 2 root root 4096 Mar 13  2013 labs
drwxr-xr-x 3 root root 4096 Mar 17  2013 notes
drwxr-xr-x 2 root root 4096 Mar 25  2013 programs
-rwxr-xr-x 1 root root   53 Jan 23  2013 resources
-rwxr-xr-x 1 root root 7796 Mar 17  2013 schedule.shtml
-rwxr-xr-x 1 root root 9473 Feb 18  2013 syllabus.shtml
pi@raspberrypi:~$ df
Filesystem     1K-blocks    Used Available Use% Mounted on
rootfs           8191672 3692468   4116184  48% /
/dev/root        8191672 3692468   4116184  48% /
devtmpfs          470368       0    470368   0% /dev
tmpfs              94936     224     94712   1% /run
tmpfs               5120       0      5120   0% /run/lock
tmpfs             189860       0    189860   0% /run/shm
/dev/mmcblk0p1     57288   14720     42568  26% /boot
/dev/loop0       1046512     512   1046000   1% /tmp/csci331mid
pi@raspberrypi:~$ sudo lvdisplay
  --- Logical volume ---
  LV Path                /dev/sysadmVG/aLV
  LV Name                aLV
  VG Name                sysadmVG
  LV UUID                rDK8PY-73zY-Hhd2-UEGY-Y0Nb-hpbI-gl709p
  LV Write Access        read/write
  LV Creation host, time raspberrypi, 2015-03-31 10:27:48 -0400
  LV Status              available
  # open                 0
  LV Size                256.00 MiB
  Current LE             64
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:0
   
pi@raspberrypi:~$ mkdir /tmp/a
pi@raspberrypi:~$ sudo mount /dev/sysadmVG/aLV /tmp/a
pi@raspberrypi:~$ cd /tmp/a
pi@raspberrypi:/tmp/a$ ls -l
total 34220
-rw-r--r-- 1 pi   pi   33554432 Mar 31 10:34 CSCI331TNY.img
-rw-r--r-- 1 pi   pi    1474560 Mar 31 10:34 FLOPPY.IMG
drwx------ 2 root root    12288 Mar 31 10:28 lost+found
pi@raspberrypi:/tmp/a$ sudo losetup /dev/loop1
loop: can't get info on device /dev/loop1: No such device or address
pi@raspberrypi:/tmp/a$ sudo losetup /dev/loop1 /tmp/a/CSCI331TNY.img 
pi@raspberrypi:/tmp/a$ mkdir /tmp/csci331tny
pi@raspberrypi:/tmp/a$ sudo mount /dev/loop1 /tmp/csci331tny/
pi@raspberrypi:/tmp/a$ df
Filesystem               1K-blocks    Used Available Use% Mounted on
rootfs                     8191672 3692460   4116192  48% /
/dev/root                  8191672 3692460   4116192  48% /
devtmpfs                    470368       0    470368   0% /dev
tmpfs                        94936     224     94712   1% /run
tmpfs                         5120       0      5120   0% /run/lock
tmpfs                       189860       0    189860   0% /run/shm
/dev/mmcblk0p1               57288   14720     42568  26% /boot
/dev/loop0                 1046512     512   1046000   1% /tmp/csci331mid
/dev/mapper/sysadmVG-aLV    245679   36270    192206  16% /tmp/a
/dev/loop1                   32686     402     32284   2% /tmp/csci331tny
pi@raspberrypi:/tmp/a$ sudo losetup /dev/loop2  /tmp/a/FLOPPY.IMG 
pi@raspberrypi:/tmp/a$ sudo mkdir /tmp/floopy
pi@raspberrypi:/tmp/a$ sudo mount /dev/loop2 /tmp/floopy/
pi@raspberrypi:/tmp/a$ ls -l /tmp/floopy/
total 556
-rwxr-xr-x  1 root root      0 Jan 25  2006 AUTOEXEC.BAT
-rwxr-xr-x  1 root root  93040 Jun  8  2000 COMMAND.COM
-rwxr-xr-x  1 root root      0 Jan 25  2006 CONFIG.SYS
drwxr-xr-x 11 root root    512 Jan 24  2006 DCIM
-rwxr-xr-x  1 root root  17175 Jun  8  2000 DISPLAY.SYS
-rwxr-xr-x  1 root root  58870 Jun  8  2000 EGA2.CPI
-rwxr-xr-x  1 root root  58753 Jun  8  2000 EGA3.CPI
-rwxr-xr-x  1 root root  58870 Jun  8  2000 EGA.CPI
-r-xr-xr-x  1 root root 116736 May 15  2001 IO.SYS
-rwxr-xr-x  1 root root  21607 Jun  8  2000 KEYB.COM
-rwxr-xr-x  1 root root  34566 Jun  8  2000 KEYBOARD.SYS
-rwxr-xr-x  1 root root  31942 Jun  8  2000 KEYBRD2.SYS
-rwxr-xr-x  1 root root  31633 Jun  8  2000 KEYBRD3.SYS
-rwxr-xr-x  1 root root  13014 Jun  8  2000 KEYBRD4.SYS
-rwxr-xr-x  1 root root  29239 Jun  8  2000 MODE.COM
-r-xr-xr-x  1 root root      9 Apr  7  2001 MSDOS.SYS
pi@raspberrypi:/tmp/a$ df
Filesystem               1K-blocks    Used Available Use% Mounted on
rootfs                     8191672 3692476   4116176  48% /
/dev/root                  8191672 3692476   4116176  48% /
devtmpfs                    470368       0    470368   0% /dev
tmpfs                        94936     224     94712   1% /run
tmpfs                         5120       0      5120   0% /run/lock
tmpfs                       189860       0    189860   0% /run/shm
/dev/mmcblk0p1               57288   14720     42568  26% /boot
/dev/loop0                 1046512     512   1046000   1% /tmp/csci331mid
/dev/mapper/sysadmVG-aLV    245679   36270    192206  16% /tmp/a
/dev/loop1                   32686     402     32284   2% /tmp/csci331tny
/dev/loop2                    1424     684       740  49% /tmp/floopy
pi@raspberrypi:/tmp/a$ sudo umount /tmp/floopy/
pi@raspberrypi:/tmp/a$ sudo umount /tmp/csci331tny/
pi@raspberrypi:/tmp/a$ sudo umount /tmp/csci331mid/
pi@raspberrypi:/tmp/a$ sudo losetup -f
/dev/loop3
pi@raspberrypi:/tmp/a$ sudo losetup -d /dev/loop2
pi@raspberrypi:/tmp/a$ sudo losetup -d /dev/loop1
pi@raspberrypi:/tmp/a$ sudo losetup -d /dev/loop0
pi@raspberrypi:/tmp/a$ sudo losetup -f
/dev/loop4
pi@raspberrypi:/tmp/a$ exit
exit

Process shell<1> finished