Open DMG File

Information, tips and instructions

Open DMG File on Linux

DMG files use Hierarchical File System (HFS) as a disk file system format. In order for your Linux machine to open DMG files it needs to support HFS and HFS+. To enable HFS and HFS+ support on your Linux machine you will need to install HFS tools and kernel modules.

Ubuntu

Below are instructions on how to install HFS and HFS+ and mount HFS+ drive on Ubuntu.

1) Install hfsprogs which enables operation with HFS and HFS+ on Linux via ports of mkfs and fsck.

sudo apt-get install hfsprogs

2) Mount or remount the HFS+ drive

sudo mount -t hfsplus -o force,rw /dev/sdXY /media/mntpoint

or

sudo mount -t hfsplus -o remount,force,rw /mount/point

3) If the drive is partially corrupted or was unmounted with an error run:

sudo fsck.hfsplus -f /dev/sdXY

CentOS

Below are instructions on how to mount HFS or HFS+ in CentOS:

1) Install hfs kernel modules and hfs+ tools:

yum install kmod-hfs

yum install hfsplus-tools

2) Mount or remount the HFS+ drive

sudo mount -t hfsplus -o force,rw /dev/sdXY /media/mntpoint

or

sudo mount -t hfsplus -o remount,force,rw /mount/point

3) If the drive is partially corrupted or was unmounted with an error run:

sudo fsck.hfsplus -f /dev/sdXY

With HFS and HFS+ enabled you are ready to mount your DMG file.

Following DMG partitioning schemes were tested to work with instructions below:

  • Apple Partition Map
  • CD/DVD (partitioned)
  • CD/DVD (partitioned) with ISO data
  • Hard disk
  • Master Boot Record Partition Map
  • No partition map

Below is a command to mount an image.dmg file using hfsplus file system:

sudo mount -t hfsplus image.dmg /mnt

Here -t hfsplus tells mount command to mount with HFS+ file system. The /mnt specifies a path to where the image will be mounted.

To unmount following command is needed:

sudo mount -t hfsplus image.dmg /mnt

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DMG Quick Info
Apple Disk Image
MIME Type
application/x-apple-diskimage
Opens with
  • Disk Utility
  • hdiutil
  • 7-Zip
  • DMG Extractor