Languages/shell/mount-o

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(Creating an empty disk image)
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= Creating an empty disk image =
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= Creating an empty partitiion image =
 
<source lang='bash'>
 
<source lang='bash'>
 
dd if=/dev/zero of=/tmp/image.bin bs=1M count=512 # a new 512M image
 
dd if=/dev/zero of=/tmp/image.bin bs=1M count=512 # a new 512M image
 
mkfs.ext4 -F /tmp/image.bin # "format" the disk image, works as a normal user !
 
mkfs.ext4 -F /tmp/image.bin # "format" the disk image, works as a normal user !
 
</source>
 
</source>

Revision as of 12:30, 2 March 2015

Contents

Mounting a filesystem image for editing

# Create a destination directory
mkdir /tmp/toto
# Mount your existing filesystem image into it
sudo mount -o loop image.bin /tmp/toto
# Now you can see what is in this filesystem image and change the files ;)
# Don't forget to umount when you're done

Unmounting

sudo umount /tmp/toto

Create an ext4 image from a sdcard

sudo dd if=/dev/sdcard of=/tmp/image.bin

Restore the sdcard

sudo dd if=/tmp/image.bin of=/dev/sdcard

Creating an empty partitiion image

dd if=/dev/zero of=/tmp/image.bin bs=1M count=512 # a new 512M image
mkfs.ext4 -F /tmp/image.bin # "format" the disk image, works as a normal user !
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