How to stop mounts on /media when inserting a USB device. (SD, Flash, etc.)

MrUmunhum · 12-14-2008, 07:57 PM

Hi group,

I thought I had posted this questions before but I can't find it if I did.

I need to stop my Linux system from mounting USB drives as /media/xxxn. My problem is I am attempting to create a script that I can use to build a file system on an SD card. When I use fdisk and create the partition, the kernel will use the old partition configuration until it is 'ejected' or a system reboot. I can do an 'eject' then I must re-plug the card and then the system does the mounts. I don't want it to do this!

Or is there a way to re-read the partition tables so that I don't need to eject and re-plug?

Thanks for your time.

indienick · 12-14-2008, 09:21 PM

Take a look at the files in /etc/udev/rules.d/.

You will probably have to configure the UDEV rules.

zyrotec · 12-15-2008, 06:24 AM

instead of doing an "eject" just

Code:

umount /media/xxxn

, then you should be able to run fdisk on the device.

SirYes · 12-15-2008, 07:26 AM

You should probably use partprobe. Just install parted, it should come with it.

See:
http://www.cyberciti.biz/tips/re-rea...ux-system.html
http://linux.die.net/man/8/partprobe

MrUmunhum · 12-16-2008, 03:30 PM

Quote:

Originally Posted by zyrotec

instead of doing an "eject" just

Code:

umount /media/xxxn

, then you should be able to run fdisk on the device.

The problem is that the old partition map is still in the kernal's memory. So I need to use eject.

MrUmunhum · 12-16-2008, 04:39 PM

Quote:

Originally Posted by SirYes

You should probably use partprobe. Just install parted, it should come with it.

See:
http://www.cyberciti.biz/tips/re-rea...ux-system.html
http://linux.die.net/man/8/partprobe

I tried using parted and that works better but it still mounts the file systems if the partition table has changed.

It does modify the kernel's partition table.

Thanks.

ErV · 12-17-2008, 12:33 AM

Quote:

Originally Posted by MrUmunhum

Hi group,

I thought I had posted this questions before but I can't find it if I did.

I need to stop my Linux system from mounting USB drives as /media/xxxn. My problem is I am attempting to create a script that I can use to build a file system on an SD card. When I use fdisk and create the partition, the kernel will use the old partition configuration until it is 'ejected' or a system reboot. I can do an 'eject' then I must re-plug the card and then the system does the mounts. I don't want it to do this!

Or is there a way to re-read the partition tables so that I don't need to eject and re-plug?

Thanks for your time.

hdparm -z allows forces kernel to re-read partition table of drive. Not sure if it can be used on usb drives.

nooneknowme · 12-18-2008, 09:27 AM

for me a combination of umount /media/XXX and partprobe does the trick.

pcallycat · 12-18-2008, 01:30 PM

This depends largely on what is performing the automount. Many distros set up the desktop environment to perform the automount, in which case, you would need to find the setting in that environment to disable automounting. Some use backend scripts to perform the mount (ie, I've use a combination of udev,pmount, and kludges to make things work my way before).

What distro and what desktop environment are you using?

MrUmunhum · 12-19-2008, 02:36 PM

Quote:

Originally Posted by pcallycat

This depends largely on what is performing the automount. Many distros set up the desktop environment to perform the automount, in which case, you would need to find the setting in that environment to disable automounting. Some use backend scripts to perform the mount (ie, I've use a combination of udev,pmount, and kludges to make things work my way before).

What distro and what desktop environment are you using?

Well I am currently using Fedora Core 8 and Gnome, but I am looking for a universal fix. Have not tried at init 3 level.

MrUmunhum · 12-19-2008, 02:37 PM

Quote:

Originally Posted by ErV

hdparm -z allows forces kernel to re-read partition table of drive. Not sure if it can be used on usb drives.

Yes, that does work. But it still does the mount.

SirYes · 12-19-2008, 04:11 PM

Quote:

Originally Posted by MrUmunhum

Yes, that does work. But it still does the mount.

Do I really have to do the googling for you? ...

Anyway: http://www.google.com/search?q=ubunt...vent+automount

Here are good clues:
http://ubuntuforums.org/showthread.php?t=13692

Quote:

Originally Posted by init1

Quote:

Originally Posted by marquivon

I found this while googling

https://answers.launchpad.net/ubuntu/+question/30501

From that page, this works for me

Quote:

There is a solution but you will have to enter your password every time you want to mount a removable device:
1. Press Alt+F2 and enter:
polkit-gnome-authorization
2. Go to Storage => Mount file systems from removable drivers
3. Press the "Edit..." button
4. Choose "Active Console: Authentication"
5. Press the "Modify..." button

And this one is good too:

Quote:

Originally Posted by super_hill

This way works for me:
gconftool-2 --type bool --set /apps/nautilus/preferences/media_automount false

You can refer: http://ubuntuforums.org/showthread.php?p=4823693

MrUmunhum · 12-20-2008, 03:21 PM

Thanks for all of your responses. The one that I found useful was:

System->Preferences->Hardware->Removable Devices
Then disable the first two lines in the Stoarge sections:
Mount removable drives
Mount removable media

Thanks again for your time.

MrUmunhum · 06-16-2009, 08:38 PM

Quote:

Originally Posted by MrUmunhum

Thanks for all of your responses. The one that I found useful was:

System->Preferences->Hardware->Removable Devices
Then disable the first two lines in the Stoarge sections:
Mount removable drives
Mount removable media

Thanks again for your time.

This option is not available in FC10, along with a lot of other stuff that used to be there!

ehdwuld · 06-26-2009, 08:34 PM

durned fedora 10