mount command, allows mounting of a file system at a specified point in the file hierarchy.

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84
votes
8answers
190k views

umount: device is busy. Why?

When running umount /path I get: umount: /path: device is busy. The filesystem is huge, so lsof +D /path is not a realistic option. lsof /path, lsof +f -- /path, and fuser /path all return ...
78
votes
12answers
7k views

Why is Linux's filesystem designed as a single directory tree?

Can anyone explain why Linux is designed as a single directory tree? Whereas in Windows we can have multiple drives like C:\, and D:\, there is a single root in Unix. Any specific reason there?
47
votes
5answers
2k views

Why does mount happen over an existing directory?

An existing directory is needed as a mount point. $ ls $ sudo mount /dev/sdb2 ./datadisk mount: mount point ./datadisk does not exist $ mkdir datadisk $ sudo mount /dev/sdb2 ./datadisk $ I find it ...
46
votes
9answers
8k views

Why do we need to mount on Linux?

I understand what mounting is in Linux, and I understand device files. However I do not understand WHY we need to mount. For example, as explained in the accepted answer of this question, using this ...
46
votes
9answers
49k views

Mount Google Drive in Linux?

Now that Google Drive is available, how do we mount it to a Linux filesystem? Similar solutions exist for Amazon S3 and Rackspace Cloud Files.
44
votes
2answers
171k views

How to get the complete and exact list of mounted filesystems in Linux?

I usually use mount to check which filesystems are mounted. I also know there is some connection between mount and /etc/mtab but I'm not sure about the details. After reading How to check if /proc/ is ...
44
votes
6answers
20k views

Different linux distros sharing the same /home folder?

What is the best way to share the same /home directories between different linux distribution? I mean, I want to have both, say, Fedora and Arch, and I want to find my files at home no matter which ...
40
votes
1answer
3k views

What happens when you 'mount over' an existing folder with contents?

Right now /tmp has some temporary files in it. When I mount my hard drive (/dev/sdc1) on top of /tmp, I can see the files on the hard drive. What happens to the actual content of /tmp when my hard ...
39
votes
7answers
9k views

Why does mount require root privileges?

Why does Linux require that a user be root/using sudo/specifically authorized per mount in order to mount something? It seems like the decision as to whether to allow a user to mount something should ...
38
votes
5answers
30k views

Is it possible to mount a gzip compressed dd image on the fly?

I like create an image backup for the first time I'm backing up a system. After this first time I use rsync to do incremental backups. My usual image backup is as follows: Mount and zero out the ...
37
votes
4answers
15k views

What is a better way to deal with server disconnects of sshfs mounts?

I have several directories mounted through sshfs. I sometimes get disconnects from the server (not configurable by me). I usually mount the directories like this sshfs ...
36
votes
4answers
9k views

How can I mount a block device from one computer to another via the network as a block device?

Is it possible to export a block device such as a DVD or CDROM and make it so that it's mountable on another computer as a block device? NOTE: I'm not interested in doing this using NFS or Samba, I ...
27
votes
2answers
6k views

understanding “mount” as a concept in the OS

I want to understand what mounting is. It is used in different contexts and situations and I can't find resources which: Describe the mount concept Explain the actions taken by the ...
26
votes
1answer
18k views

What is a bind mount?

What is a “bind mount”? How do I make one? What is it good for? I've been told to use a bind mount for something, but I don't understand what it is or how to use it.
26
votes
2answers
5k views

Where do the files go if you mount a drive to a folder that already contains files?

I just accidentally mounted a new drive to a folder that already contained files. I don't care about them and have them somewhere else, but that folder appears empty now. I'm curious what happened ...
26
votes
2answers
13k views

What mount points exist on a typical Linux system?

I have 2 questions. During Linux installation we specify memory space for 2 mount points - root and swap. Are there any other mount points created without the users notice? Is this statement ...
25
votes
2answers
59k views

Mount cifs Network Drive: write permissions and chown

I have access to a cifs network drive. When I mount it under my OSX machine, I can read and write from and to it. When I mount the drive in ubuntu, using: sudo mount -t cifs -o ...
24
votes
4answers
19k views

Are there any drawbacks from using mount --bind as a substitute for symbolic links?

Symlinks have limitations in how functions like ls, mv, and cp can operate on them because unlike shell initiated commands like cd, these functions do not have information about how the user accessed ...
24
votes
6answers
7k views

What's the most “correct” mount point for a permanent NTFS partition?

I have an NTFS partition (containing a Windows installation from which I dual boot) that I would like to permanently mount from my Linux installation. Problem is, I can't figure out what the ...
23
votes
2answers
2k views

How does Linux know which USB hard drive is which?

Currently I have Linux Mint installed on my PC with a USB hard drive partition mounted as /home. This is working well. If I install a second USB hard drive, is there any chance Linux will get ...
22
votes
1answer
25k views

What is meant by mounting a device in Linux?

I've heard the term "mounting" when referring to devices in Linux. What is its actual meaning? How it handling now unlike older versions? I haven't done that manually via the command-line. Can you ...
20
votes
2answers
7k views

What is a “loop device” when mounting?

I am doing a mounting of an iso file and looking at this tutorial. They use the command: $ mount -o loop disk1.iso /mnt/disk I'm trying to understand the use of -o loop. So I have two questions: ...
20
votes
2answers
4k views

Mount an iso without root access?

Is it possible for a user without root access to mount an arbitrary iso? If so how?
19
votes
7answers
45k views

Check if folder is a mounted remote filesystem

What is the best way (reliable, portable, etc.) to check if a given folder is on a mounted remote (nfs) filesystem within a shell script? I am looking for a command that would look like: ...
19
votes
1answer
6k views

`mount -o loop` changes mounted ISO image file

It looks like mount -o loop changes the mounted image file. I downloaded the ISO image file and checked its SHA-1 checksum. Then I mounted that ISO file and the checksum changed. Here are the exact ...
17
votes
4answers
232k views

How to mount a device in Linux?

I read some resources about the mount command for mounting devices on Linux, but none of them is clear enough (at least for me). On the whole this what most guides state: $ mount (lists all ...
17
votes
2answers
5k views

Why doesn't mount respect the read only option for bind mounts?

On my Arch Linux system (Linux Kernel 3.14.2) bind mounts do not respect the read only option # mkdir test # mount --bind -o ro test/ /mnt # touch /mnt/foo creates the file /mnt/foo. The relevant ...
16
votes
4answers
56k views

Best way to mount remote folder

I have two RasberryPi running debian wheezy and I would like to mount a folder from computer A on computer B. What is the best (as in most efficient) way to do this? I can do it via SMB, but that is ...
16
votes
7answers
24k views

What is the fastest way to extract an ISO?

Currently I'm mounting an ISO to a (readonly) directory (using mount -o loop command) and then copying the contents to another normal directory. This takes lot of time as the ISO is large. Is this the ...
16
votes
4answers
98k views

mount.nfs: access denied by server while mounting on Ubuntu machines?

I am a linux newbie and I have a very basic question. I have three machines in production - machineA 10.66.136.129 machineB 10.66.138.181 machineC 10.66.138.183 and all those machines ...
16
votes
5answers
15k views

LXC: How do I mount a folder from the host to the container?

I'm trying to mount a folder on the host to an LXC container. The host has a folder /mnt/ssd/solr_data created (this is currently on the root filesystem, but later I'll mount an SSD drive there, so ...
16
votes
3answers
17k views

Does mount always require root privileges?

I was under the impression that any sort of call to mount requires root privileges. But recently I was told "You should instead create appropriate entries in /etc/fstab so that the filesystems can be ...
15
votes
3answers
44k views

How to umount a USB drive?

I want to know how to umount my USB drive via command line. I am using Ubuntu 12.04 LTS 32-bit.
15
votes
2answers
1k views

Is there anyway to automatically mount a filesystem when I open a symbolic link to a directory on that filesystem?

I am using Arch with Xfce. Recently, I have created a symbolic link to a directory on a filesystem. But I don't want to mount the filesystem during boot or manually mount it before I open the ...
14
votes
6answers
1k views

Showing only “interesting” mount points / filtering non interesting types

I used mount to show mounted drives, I don't want to see the not so interesting ones (i.e. non-physical). So I used to have a script mnt that did: mount | grep -Ev 'type (proc|sysfs|tmpfs|devpts) ' ...
14
votes
4answers
30k views

How to determine if NFS mount is mounted as v3 or v4?

Red Hat 5/6 when I do mount it says type nfs, I would like to know how to determine version if it isn't listed in mount options or fstab. Please don't say remount it with the version option, I want ...
14
votes
2answers
5k views

Can the same ext4 disk be mounted from two hosts, one readonly?

I know that mounting the same disk with an ext4 filesystem from two different servers (it's an iSCSI vloume) will likely corrupt data on the disk. My question is will it make any difference if one of ...
13
votes
9answers
2k views

Favorite partitioning and mounting tricks

We all know that mounting a new partition as /home and maybe /boot is extremely useful. Or mounting a remote directory as /opt can be great for sharing system tools. Are there any other, maybe more ...
13
votes
3answers
27k views

how to find the type of img file and mount it

I have to mount a .img file but I don't know what type of .img it is. How can I figure out what type of .img file it is? # mount -t auto -o ro,loop gmapsupp.img /mnt/iso/ mount: you must specify the ...
13
votes
2answers
1k views

Is that possible to integrate zip and tar.gz files as directory into the file system

I wonder if there is a way to integrate (it's a bit different from mounting, I think) compressed files as directories into the file system? E.g., one could download a compressed-file.tar.gz to his ...
13
votes
2answers
13k views

How to re-mount a USB stick after unmounting from Nautilus without disconnecting it?

I find that in order to re-mount a USB stick, I have to physically disconnect it, and then re-connect it. How can I do this without such tiring physical action?
13
votes
1answer
38k views

Mounting a squashfs filesystem in read-write

I have a Clonezilla installation on a USB stick and I'd like to make some modifications to the operating system. Specifically, I'd like to insert a runnable script into /usr/sbin to make it easy to ...
13
votes
3answers
7k views

What mount option to use for ext3 file system to minimise data loss or corruption?

I have an embedded setup using an initramfs for the root file system but using a custom ext3 partition mounted on a compact flash IDE drive. Because data integrity in the face of power loss is the ...
12
votes
2answers
11k views

When mounting, when should I use a loop device?

According to the following question: What is a "loop device" when mounting? A loop device is a file that acts as a block-based device. While I can understand that conceptually, how is this ...
12
votes
1answer
14k views

Difference between 'sync' and 'async' mount options

What is the difference between sync and async mount options from the end-user point of view? Is file system mounted with one of these options works faster than if mounted with another one? Which ...
12
votes
4answers
5k views

CD disk not detected by Fedora on my Laptop

I rarely use cd's on my laptop, but I recall having the same problem a few months ago. When I put a cd in my DVD drive nothing happens. It kicked in last time without me doing anything but I don't ...
11
votes
5answers
28k views

Allow non-superusers to mount any filesystem

Is it possible to allow some particular users (e.g. members of a group) to mount any filesystem without superuser privileges on Linux? (Another question might have been "in what ways a user can harm ...
11
votes
1answer
17k views

How do I mount an `img` created with /bin/dd of a hard drive?

I used dd to backup a 80GB drive dd if=/dev/sdb of=~/sdb.img Now I need to access some files on that drive, but I don't want to copy the ".img" back over the drive. mount ~/sdb.img /mnt/sdb ...
11
votes
4answers
15k views

Mount an loop file without root permission?

Can i mount a loop file without root permission , normally i do: mount -o loop DISK_IMAGE FOLDER Without setting up sudo or suid mount program , is there any suitable way to do this ? I know i can ...
11
votes
3answers
10k views

How to unmount a formerly chroot'd filesystem?

I'm using a rescue-live-system (similar to a live-cd) to fix some issues with my Debian server, like that: # mkdir -p /mnt/rescue # mount /dev/md2 /mnt/rescue # mount --bind /dev /mnt/rescue/dev/ # ...