How can I mount an ISO file?

Question

I'm trying to open an ISO file, but not having any luck.

So far I have tried:

• Gmount (it doesn't seem to work because it says the folders aren't empty?
• furiusisomount not available for Ubuntu 14.04
• Archive Mounter (nothing happens when I right click the ISO and open with Archive Mounter)
• FuseISO - I right click file MOUNT ISO.. nothing happens.

So I try the old fashioned way with command line:

$ sudo mount -o loop /media/user/Jupiter-8/files/butterfly.iso /media/iso
mount: you must specify the filesystem type

Output of file /media/user/Jupiter-8/files/butterfly.iso:

FoxPro FPT, blocks size 0, next free block index 1380078928

What should I do?

Mounting

Loop mount works without specifying the file system, when you mount 'normal' linux iso files like Ubuntu family iso files.

$ sudo mount -o loop ubuntu-16.04.1-desktop-amd64.iso /mnt/lp1
[sudo] password for sudodus: 
mount: /dev/loop0 is write-protected, mounting read-only

It might help to specify the file system with some other kind of iso file. The file system may not be iso9660, but udf or something else. You have to guess here unless you clone the iso file to a USB pendrive or burn it to a DVD disk and look at that with sudo lsblk -f

$ sudo umount /mnt/lp1
$ sudo mount -t iso9660 -o loop ubuntu-16.04.1-desktop-amd64.iso /mnt/lp1
mount: /dev/loop0 is write-protected, mounting read-only

Checking

$ df -h /mnt/lp1
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop0      1,5G  1,5G     0 100% /mnt/lp1

$ sudo lsblk -f /dev/loop0
NAME  FSTYPE  LABEL                    UUID                     MOUNTPOINT
loop0 iso9660 Ubuntu 16.04.1 LTS amd64 2016-07-19-21-27-51-00   /mnt/lp1

$ sudo lsblk -m /dev/loop0
NAME   SIZE OWNER GROUP MODE
loop0  1,4G root  disk  brw-rw----

$ ls -l /mnt/lp1
total 56
dr-xr-xr-x 1 root root  2048 jul 19  2016 EFI
-r--r--r-- 1 root root   232 jul 19  2016 README.diskdefines
dr-xr-xr-x 1 root root  2048 jul 19  2016 boot
dr-xr-xr-x 1 root root  2048 jul 19  2016 casper
dr-xr-xr-x 1 root root  2048 jul 19  2016 dists
dr-xr-xr-x 1 root root  2048 jul 19  2016 install
dr-xr-xr-x 1 root root 18432 jul 19  2016 isolinux
-r--r--r-- 1 root root 21439 jul 19  2016 md5sum.txt
dr-xr-xr-x 1 root root  2048 jul 19  2016 pics
dr-xr-xr-x 1 root root  2048 jul 19  2016 pool
dr-xr-xr-x 1 root root  2048 jul 19  2016 preseed
lr-xr-xr-x 1 root root     1 jul 19  2016 ubuntu -> .
$ 

An example with udf

$ sudo mount -o loop LXDE_on_Leap_42.1_openSUSE_by_kolAflash.x86_64-0.1.1.iso /mnt/lp2
mount: /dev/loop1 is write-protected, mounting read-only

$ sudo lsblk -f /dev/loop1
NAME    FSTYPE LABEL UUID                                       MOUNTPOINT
loop1   udf    CDROM 2015-11-10-19-42-39-00                     /mnt/lp2

Comments

[muru]

-t iso9660, if it's a normal ISO

[Kalamalka Kid]

im sorry i dont understand. Does this go before the command i put in or after?

[Kalamalka Kid]

wrong fs type, bad option, bad superblock on /dev/loop5, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so

[sudodus]

What kind of iso file is butterfly.iso? Did you check that the download was good? Can you check it via cloning to a USB drive or DVD disk?

[Kalamalka Kid]

It's a game… I'm not sure what you mean by checking it via cloning though…

[sudodus]

I see. It is not a normal [linux] iso file, and might not be possible to mount by the mount command. You can 'burn' to a DVD disk with for example k3b. Then the game might work, when connected to a computer running Windows (if there is no protection against copying).

[Kalamalka Kid]

I dont really want to play the game. I need access to the files.