Install or upgrade Ubuntu, even on a Mac Test out the Ubuntu desktop experience without touching your PC configuration Boot into Ubuntu on a borrowed machine or from an internet cafe Use tools installed by default on the USB stick to repair or fix a broken configuration Creating a bootable USB stick is very simple. How to Put a DMG on a Flash Drive to Install. If the file has been downloaded to a Windows PC, you will need to make sure the USB flash drive is formatted in FAT32 - a format that both the Windows PC and the Mac computer can both read. Most USB flash drives already use this format, but if yours doesn't you can quickly format it in Windows.

1. Linux Dmg To Usb

So you’re running Linux on your computer, maybe Ubuntu, and you have some files with the .dmg extension. In this guide, we’re going to talk about how to open, mount, extract, and otherwise get your files from these pesky DMG images. You could always just extract the files on a Mac, then transfer them back to your Linux machine. But if you really want to do this on Linux, without having to rely on Mac, here’s how to do it.

What are DMG image files?

Simply put, it’s a kind of image file. But not an image like a jpeg is an image. DMG is Apple’s proprietary disk image format, native to Mac OS X. There are actually a whole bunch of different types, format and options within this format. There are options for encryption, compression, and different kinds of partition schemes, among others. Unfortunately, this can make things pretty confusing when we’re trying to gain access to the data contained in one of these images.

DMG images are typically a kind of Universal Disk Image Format (UDIF), although there are others, namely NDIF and SPARSE. Although the .dmg file extension is usually used, they can also sometimes have an .img extension, or in some cases no extension at all. Their MIME type is application/x-apple-diskimage.

The HFS/HFS+ (Mac OS Extended/Journaled) file system is typically used in DMGs. However, this isn’t always the case. You may also sometimes find FAT and ExFAT files systems, as well as variations on HFS.

Does my system support DMG?

Perhaps the biggest hurdle to overcome when trying to work with DMG files is working with the HFS file system (Mac OS Extended). Linux supports HFS through the “hfs” and “hfsplus” kernel modules.

There’s an easy way to test if your system has these kernel modules. Plug in a USB drive formatted with the Mac OS Extended file system. If your particular distribution doesn’t have the appropriate modules, you will likely get an error message. On Ubuntu, you’ll get a popup window declaring “Ubuntu: Unable to mount '.

Alternatively, we can see if the kernel module files are present with find:

We want to see two files: “hfs.ko” and “hfsplus.ko”. If find doesn’t return these files, your system probably doesn’t support HFS.

You could also try “modinfo”: modinfo hfs and modinfo hfsplus should return something like:

If you get 'modinfo: ERROR: Module hfsplus not found' your system doesn’t have these modules.

Not all Linux kernels and distributions support HFS. This is especially the case for certain distributions that are a few years old. If you have kernel support for HFS, great! If not, don’t worry. There are still ways to extract data from your DMG files. While it’s nice to have the option to mount the images we’re working with, this is really the only functionality we’re losing without having the hfs and hfsplus modules. The two programs we’re going to use later on (P7ZIP and dmg2img) do not require kernel support to function.

What kinds of DMG images can be opened in Linux?

This guide is about how to open, mount, and extract files from read/write, read only, and compressed DMG image files. The following partition schemes have all been tested with the techniques discussed here.

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

This guide does not cover how to handle sparse disk images (.sparseimage), sparse bundle disk images (.sparsebundle), or CD/DVD masters. DMG images with partition scheme types of “CD/DVD” and “GUID Partition Map” do not appear to work with the techniques described here.

Option 1: Mount the DMG

If the Linux distribution you’re on has HFS support in the kernel (Ubuntu 14.04.1 LTS supports it), it’s pretty easy to just mount the DMG image:

We’re using “sudo” because we need root privileges to mount things. The HFS+ file system type is specified with “-t hfsplus”. The “/mnt” at the end of the command specifies where we’re mounting the image.

Unmount the image with sudo umount /mnt

If you get a wrong fs type message like the one below, it means the DMG file is either of an unsupported type, or it’s compressed. Unsupported images include sparse images, sparse disk bundles, CD/DVD masters, and images with partition schemes of the CD/DVD or GUID Partition Map types.

Use “file” to learn a little more about the image file:

If you get image.dmg: x86boot sector that means it’s probably using a GUID Partition Map and isn’t supported. This isn’t good, however, it’s also not too terribly common.

What’s more common is to see something like this:

If mounting isn’t working, and this is what you’re seeing with “file image.dmg”, then you’re luck!. Our problems are being caused by compression. Linux doesn’t like to mount compressed DMG images. To get around this little obstacle, we’ll use dmg2img (see below).

Option 2: Use dmg2img for compressed images

So you have a DMG image that you can’t mount because it’s compressed. You’ve done “file compressed_image.dmg” and you got “compressed_image.dmg: bzip2 compressed data”. The fix? That’s easy: use dmg2img to convert it to an uncompressed image. Once you run the image through dmg2img you should be able to mount it no problem.

Don’t have dmg2img? It’s usually pretty easy to get using your distribution’s package management. On Ubuntu, you’d do:

Using dmg2img isn’t very difficult. Type “dmg2img” into the command line followed by the name of the DMG file you want to decompress. The Mac OS X version of Firefox is a good example of a compressed DMG file.

Now mount the resulting .img file:

Option 3: Extract DMG contents with P7ZIP

P7ZIP is awesome. It’s the Linux/BSD version of 7-Zip. Check out their SourceForge page here With it you can literally extract files from any kind of image or archive. Just kidding… It doesn’t really work with every format conceivable. However, it can handle (in alphabetical order): ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z. Impressed? I certainly am!

Installing p7zip is pretty easy using your distribution’s package management system. On Ubuntu with apt-get:

In addition to being able to extract data from compressed and uncompressed images alike, P7ZIP doesn’t require the HFS kernel modules at all. In the example below, we’re going to extract all of the files from “Firefox 33.1.1.dmg”. When we’re done, we’ll have a tidy little folder called “Firefox”.

Invoke P7ZIP to extract archives and images with “7z x”.

Notice that 7z extracted three files: “0.ddm”, “1.Apple_partition_map”, and “2.hfs”. To actually get to the files, we’ll need to run 7z again on “2.hfs”.

We picked “2.hfs” because it was the biggest of the three, meaning it was probably the one with the data. Simple but effective logic. After a few moments, you should have a folder called “Firefox” with all of the files from the original DMG.

Ubuntu is a common variant of Linux, complete with a user-friendly interface and full flexibility in customizing it via the Terminal window. Windows and Linux share the ability to open ISO files, which are similar to DMG files. Though DMG files are commonly associated with Apple’s operating system, Mac, they can be opened in Linux with a few simple steps.

Step 1: Install dmg2img

• Open up your terminal console
• sudo apt-get update
• sudo apt-get install dmg2img

Step 2: convert the .dmg to .img

Once dmg2img is installed, you will want to change our working directory to the .dmg you want to use. in my case, the image.dmg is on my desktop. ( /home/dan/desktop )

The application is Intel only for Mac OS X ver 10.6 and above.Version 1.0 - 1.5dmg2iso is a small tool for converting Apple Macintosh.dmg images to.iso images. /dmg-to-iso-converter-free.html. The application is Universal for Mac OS X ver 10.4 and above.

• cd /home/dan/desktop

Linux Dmg To Usb

Once you are succesfully in your working directory, you are now read to convert the .dmg file.

• dmg2img /home/dan/desktop/image.dmg /home/dan/desktop/image.img

NOTE: the second part of the command is a .img at the end.

Step 3: Mount the .img file

Now we are ready to mount the .img file into a new directory

• mkdir /media/image
• sudo modprobe hfsplus
• sudo mount -t hfsplus -o loop image.img /media/image

Step 4: Convert the .img to .iso

The image is now mounted. We need to convert it to a .iso file now. Open Brasero, a program native to Ubuntu. It can be found in the “Sound & Video” section under “Applications.” When the window opens, choose “Data Disk” and then “Enable Side Panel.” (if Brasero is not installed, open up the terminal and type the following command: sudo apt-get install brasero )

Press “Image File” and “Burn.” This takes the IMG file and converts it into an ISO file. Wait for this to finish.

Step 5: Mount the .iso file

Enter the following commands into Terminal, where “image” is the name of the ISO:

• mkdir /media/imageiso
• sudo modprobe hfsplus
• sudo mount -t hfsplus -o loop image.iso /media/imageiso

This will successfully mount the .iso file and you can proceed with your installation. Sim 2 mac download.