How to: Mount an ISO image under Linux

by on March 29, 2004 · 61 comments· LAST UPDATED December 11, 2008

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An ISO image is an archive file (disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format. ISO image files typically have a file extension of .ISO. The name "ISO" is taken from the ISO 9660 file system used with CD-ROM media, but an ISO image can also contain UDF file system because UDF is backward-compatible to ISO 9660.

You can mount an ISO images via the loop device under Linux. It is possible to specify transfer functions (for encryption/decryption or other purposes) using loop device.

But, how do you mount an ISO image under Linux? You need to use mount command as follows:

Procedure to mount ISO images under Linux

1) You must login as a root user, if not root user then switch to root user using following command:
$ su -

2) Create the directory i.e. mount point:
# mkdir -p /mnt/disk

3) Use mount command as follows to mount iso file called disk1.iso:
# mount -o loop disk1.iso /mnt/disk

4) Change directory to list files stored inside an ISO image:
# cd /mnt/disk
# ls -l

More about loop device

A loop device is a pseudo-device that makes a file accessible as a block device. Loop devices are often used for CD ISO images and floppy disc images. Mounting a file containing a filesystem via such a loop mount makes the files within that filesystem accessible. They appear in the mount point directory using above commands.

See also:

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{ 61 comments… read them below or add one }

1 Mills September 15, 2004 at 8:13 pm

Cheers, worked like a charm :-)

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2 Anonymous April 27, 2005 at 9:48 pm

Quick comment:
You need the kernel module loop for it; people that get the error about it in mount should get the latest copy of the linux source and proceed to compile the correct module which is under block devices
Other than that it works ;)

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3 sshawnn November 5, 2006 at 3:24 am

Just what i needed, mahalo!

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4 Hashim January 10, 2007 at 8:52 pm

Thanks! This was very very easy to find and follow. I’m new to linux and this is the reason I made the swicth, the help that everyone give make learning linux easy and fun. Thank you for your time, thank you!

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5 ORB April 18, 2007 at 1:00 pm

sweet! worked cleanly, no stupid paid software for windows needed to do such a simple task!

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6 richard July 7, 2007 at 8:20 pm

Looks like we cant mount it for RW. Bloody well then.

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7 Gary August 16, 2010 at 3:19 pm

You’d have to finalize the RW disc so that it becomes an iso image. You can still erase the disc later.

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8 hkgo78 September 29, 2011 at 7:38 pm

I think he means mounting the iso file for reading and writing.

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9 Reggie July 19, 2007 at 4:13 pm

This tip was a great help! I only need to read the iso for installations so thanks a heap!

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10 kvz August 2, 2007 at 11:32 am
11 artiomix August 2, 2007 at 10:10 pm

richard, to edit bootable ISO mount it as it’s described here, copy it’s contents to some directory, edit files you need and generate new ISO by command:

sudo mkisofs -o /tmp/new.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -J -R -V “new iso name” .

or

read this

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12 Raul Trujillo January 30, 2008 at 4:50 pm

Works like a charm. It kept me from Burning a DVD for a computer that didn’t read DVDs. I did a Net Install of Linux over FTP. I copied the File to a Linux FTP Server, mounted the ISO and did an install. Sweet.

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13 hedron February 4, 2008 at 3:18 am

But what if I don’t have root? Or am too lazy to su or sudo?

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14 PICCORO April 30, 2008 at 2:27 pm

the .img .iso and .nrg images can mounted directly, only change the options for loop and offest..

the other types (.b5i , .daa , .cdd , .cue , .bin , .xbo , .mdf , .cda , .pdi ) can mounting by the cdemu/cdemuserspace module for linux kernels, here all packages for debian users:

qgqlochekone.blogspot.com/2008/04/iso-linux-debian-venenux-tools.html

other method is coverting the image to native iso image and then mounting normaly..

in the McKAY blog are all convertion utilitys for al image types, including .daa (poweriso) and pdi (instancopy)

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15 PICCORO April 30, 2008 at 2:31 pm

also:

u dont need su or sudo for mounting, that is stupid..

only added user to cdrom and disk groups an mount groups, and now user can mounting without any su or sudo permissions..

McKAY’s isos tools and converters for VENENUX/debian

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16 Guido Flohr May 2, 2008 at 5:18 pm

@hedron: You need root access to mount any device, unless it is listed in /etc/fstab and has the option “user”. That also answer your question: Set up a filename convention for the iso image (/home/user/mountme.iso) and the directory where to mount it (/home/user/mountmehere), add an appropriate line to /etc/fstab, don’t forget the option to allow ordinary users to mount the pseudo device, and you’re done.

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17 linuxuser May 9, 2008 at 8:45 am

SALAM
Thanks alot

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18 Knusper May 15, 2008 at 6:17 pm

Wonderfull! Works!

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19 PICCORO June 3, 2008 at 2:24 pm

root acces is not necesary, u must added u’r username to cdrom’s group, user’s group and disk’s group for mounting access command

the tool to manage virtual devices as iso images is CDemu compilation and has two brands, old and new..

old is called “cdemu” and only it for kernels 2.4, 2.6.8 and 2.6.17 to 2.6.20

new last is renamed to cdemu-userspace, and it for new recents kernels 2.6.22 and above..

for more info see cd convertion tools and McKAY debian iso tools

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20 poysan June 19, 2008 at 5:29 am

Um, what if it comes back asking for a fs type? RH50ES states “you must specify the filesystem type”.

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21 nixCraft June 19, 2008 at 5:37 am

iso9660 used for ISO images, try
mount -t iso9660 -o loop disk1.iso /mnt/disk

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22 himadri June 27, 2008 at 3:57 pm

hey vivek , great allround effort this .. I have feeds from your site and follow your site religiously ..

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23 Mike July 10, 2008 at 2:03 pm

FYI, I have seen “disk1.iso: Permission denied” errors. This can be corrected by adding a ro flag.

mount -t iso9660 -o loop,ro disk1.iso /mnt/disk

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24 Gn0m3r.X October 12, 2008 at 12:08 pm

The right way of doing this is
$>modprobe loop
$>mount -t iso9660 -o loop disk1.iso /mnt/disk
Coz in the new kernels loop is compiled as a module

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25 mian October 31, 2008 at 5:27 am

Dear ,

r u sure dat it’ll work.

mail me @ usama.comsys@gmail.com

I need support regarding ISO images of servers @ Freebsd6.2

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26 Gn0m3r.X November 7, 2008 at 4:32 pm

Sorry I forgot to mention that u need to ‘modprobe’ only if u get this error
mount: could not find any device /dev/loop#

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27 Miladin December 18, 2008 at 5:23 pm

Thanks, it worked perfectly :)

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28 Jim February 12, 2009 at 11:06 pm

Top of the google results! Thanks for the help.

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29 Gary February 15, 2009 at 3:36 pm

Hey all,

Wondering if you can help me on this one. I am pretty new to linux and playonlinux but i am having trouble with this iso file. I am using mandriva spring 2009 and i have KDE version 3.5. I am using wine version 1.1.4. I have downloaded rollercoaster tycoon 2 as an iso file and it won’t let me mount the file. I can create a directory but as soon as i go to mount the iso file i get the following message:

Can’t find rollercoastertycoon2.iso/mnt/iso in /etc/fstab or /etc/mtab.

This is probably something stupid that i am missing cause for some odd reason mandriva likes to go round the world for a shortcut. If anyone can help me on this it would be well appreciated cause i am a fast learner and once i am successful the first time i will beable to do this no problem time after time again.

Thanks for all the help i receive

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30 LeiMai March 19, 2009 at 11:55 pm

I tried
mount -t iso9660 -o loop disk1.iso /mnt/disk
but it doesn’t work for .mdf/.mdf files tells me is a wrong fs type or bad option. Is there another way to mount alcohol images in linux or will I just have to convert it?

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31 andrae March 31, 2009 at 5:42 pm

you’re the best :-))

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32 sahil May 2, 2009 at 12:49 pm

you may use acetoneiso for gui…..

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33 kalyani May 14, 2009 at 9:53 am

thanks a lot……….its awesome!!

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34 Dokjae June 20, 2009 at 11:44 pm

Hi all. I am fairly new to linux, but I need create an ISO from files that are already on my hdd. I’ve searched and to no avail, i’ve not been able to find any info on making an ISO from files that aren’t on CD/DVD. Any help with this would be greatly appreciated. Thanks so much.

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35 nixCraft June 21, 2009 at 12:08 am

Use mkisofs command. Create an ISO file that can be opened on both windows and Linux computer for /home/vivek directory.
mkisofs -v -o /tmp/test.iso -R /home/hosting-app
See the following:
http://www.cyberciti.biz/tips/how-do-i-write-cd-at-debain-linux-command-prompt.html

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36 Dokjae June 21, 2009 at 2:45 am

Thanks Vivek. This got me thinking… Is it possible to “take a snapshot” of drive with the system installed and make a bootable CD with the image? Possibly it becoming a system recovery?

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37 nixCraft June 21, 2009 at 2:54 am

Yes, you can create full recovery tape or dvd with help of dump and restore command.

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38 yogesh July 18, 2009 at 10:10 am

i have an iso image of rhel 5.1 dvd pls let me know how to burn it to dvd on command line.

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39 john August 6, 2009 at 9:11 pm

works great assuming you watch your upper and lower case on the iso name, ha ha

thanks

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40 Rico October 21, 2009 at 11:08 pm

Very nice, and simple, how-to. Not much of a Linux guy and this was easy enough I was able to get it the first time I tried.

Any chance you could tell me how to unmount it now?

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41 soul November 15, 2009 at 2:41 pm

# mount -t iso9660 -o loop,ro /xx/xx.iso /mnt/iso
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog – try
dmesg | tail or so
flyby

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42 Simply Laz November 17, 2009 at 11:24 pm

Same as soul. Trying to mount Diablo 2 LoD disk. It may be the secureROM and etc securities on the image but I doubt it. Xubuntu Karamic (9.10) using XFCE Terminal 0.4.2. Driving me nuts. Next step gui f**k it : )

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43 soul.. November 20, 2009 at 11:59 am

about my previous mesage and error i tryed many other issos, so i think i got bad iso(damaged or something…)

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44 krow king January 3, 2010 at 11:16 am

if you want to unmount the iso file just type

# umount /mnt/disk
disk is the name of the folder you created.

you can then remove the directory

# rmdir /mnt/disk

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45 Jay_Linux January 14, 2010 at 2:18 pm

How to make a multi-distro bootable USB disk, using ISO images ?

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46 vivek August 27, 2010 at 11:00 am

hai,

After extracting the .iso image, i cant able to change the permission of that extracted files.not even to change the ownership.Any help with this would be greatly appreciated. Thanks so much.

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47 Marcelo March 22, 2011 at 12:57 am

Plz help, im 100% new to linux and i have no clue what im doing!! i tried to copy what the instructions says but it says there is no such directory… can anyone help me??

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48 Harsh April 1, 2011 at 2:14 pm

Exactly what i was looking for……Thanks

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49 mischa July 1, 2011 at 5:09 pm

Thank you, this really helps. Its fine to get a clear and easy instruction!

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50 Bruno July 22, 2011 at 9:32 pm

What if I want to mount an ISO file as the CD, like Daemon Tools, how can I do that?

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51 Abhishek Kasina January 23, 2012 at 3:19 pm

Thank you :)

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52 Anoop February 22, 2012 at 12:46 pm

Anyone can give the fstab entry to mount iso permanantly

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53 Rick C. Hodgin July 26, 2012 at 10:30 pm

You forgot to mention how to un-mount them. :-)

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54 Girish September 18, 2012 at 6:17 am

Hi,
Thanks, that worked

Is there a command to unmount these once done – just like umount in Solaris??

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55 VPN Forums December 16, 2012 at 11:38 am

Use the umount command. eg “umount /mnt/disk”

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56 Shiv Pathak January 26, 2013 at 4:50 am

Hi,
If someone needs to mount iso file through /etc/fstab permanently following entry can be done -
/CentOS-6.3-x86_64-bin-DVD1.iso /mnt/os iso9660 loop 0 0
Note- please note that I have iso file on / and mounted on /mnt/os please change these things accordingly.

Thanks

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57 john kall August 21, 2013 at 7:38 am

You can use below command reference to get Or mount CD/DVD-ROM on LINUX-OS :
1.) If you know / ensure about your CD/DVD-ROM Drive ( e.g. /dev/hdx )
# df -h
# mount -t iso9660 -o loop /dev/hdc /mnt
# df -h
2.) otherwise, use below reference :
# df -h
# mount -t iso9660 -o loop,ro /xx/xx.iso /mnt/
# df -h
Thanks,
John Kall

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58 joe October 9, 2013 at 10:15 am

wow, very nice. I’m planning to download a 3rd party software but this gives me an easy approach

Thanks.

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59 Adonis Sardinas April 9, 2014 at 1:57 am

Not even the Parallels support team could help me with this one, they tried to sell me on getting upgraded to 9.

As you suggested, installed 9 -> extracted the .iso. -> reinstalled 8 -> mounted the .iso -> and installed

But for all of you to reduce the headache Here is a link to download the .ISO folks,
https://app.box.com/s/deapvyhhs0va3tjl8yrf
download prl.tools-lin.iso
Mount, enjoy!

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60 jeremy May 12, 2014 at 5:41 am

I have installed rhel6 in vmware vsphere and it has only CUI
mount -o loop RHEL6_X86_64.iso /mnt /disk/
RHEL6_X86_64.iso : No such file or Directory
Can u help me out with this?

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61 NIX Craft May 13, 2014 at 2:46 pm

Make sure file named HEL6_X86_64.iso exists and it is the current directory:

ls -l HEL6_X86_64.iso

To mount type as root user:

mkdir -p /mnt/disk/
mount -o loop RHEL6_X86_64.iso /mnt/disk/

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