Aug 26, 2018 Please be careful when running the following commands, as you might destroy important data or disk. How To Create Disk Image on Mac OS X With dd Command. The procedure is as follows: Open the Terminal app; Get disk list with the diskutil list; To create the disk image: dd if=/dev/DISK of=image.dd bs=512; To write the disk image: dd if=image.dd. Create a new folder on the hard disk and name it appropriately. Download the Mac version of this software to the folder created in step 1. Double-click the.DMG file to mount the disk image. A file will be created inside the disk image. Run the file to launch the software installer.
Though it's possible to create a virtual hard disk image from the existing contents of a physical drive, you might find it useful to directly mount or boot a physical drive on a virtual machine (VM).
And while this is fairly easy to do with the GUI of VMware and Hyper-V when configuring a VM, that isn't the case with creating a VirtualBox physical disk, or a VirtualBox raw disk, in VirtualBox, as the process requires some CLI usage.
VirtualBox can mount entire physical hard disks as well as only selected partitions of a drive. In today's tutorial, we will only discuss mounting entire VirtualBox physical hard disks.
- A DMG file is an Apple Disk Image, a popular format on Mac OS X. It is widely used for software distribution means, and is actually the raw image of a HFS filesystem, that's why in Mac OS X it is mounted as a drive.
- Mac OS X speaks HFS, though it has mostly abandoned it for the newer HFS+ format. To burn a System 7-compatible HFS CD in OS X, first create a new disk image using Disk Utility. Select it in the left-side list and click on the Erase tab. Choose Mac OS Standard from the Volume Format dropdown and click the Erase button.
- If the disk image will be used with a Mac that has a solid state drive (SSD) and uses macOS 10.13 or later, choose APFS or APFS (Case-sensitive). If the disk image will be used with a Mac with macOS 10.12 or earlier, choose Mac OS Extended (Journaled) or Mac OS Extended (Case-sensitive, Journaled).
VirtualBox Raw Hard Disk Access
This method is called VirtualBox 'raw hard disk access.' This allows you to mount or boot a secondary hard drive or external USB, for example. We'll show how to do this when running VirtualBox on a Windows, Linux or Mac OS X host machine.
Warning: Do not attempt to mount or boot the partition that runs the host OS with a VM, as that can lead to severe data corruption. And no matter which drive or partition you want to mount, it's always a good idea to back up any existing data on it before continuing.
You'll first want to create a virtual machine within the VirtualBox GUI. Choose all options like normal, but when asked about the virtual hard drive, select Do not add a virtual hard drive.
Mac Os X Disc Image
Next, you'll need to find the path and drive number of the physical drive you'd like to mount:
In Windows, open Disk Management. You'll see the associated drive numbers on the left and will identify them later as PhysicalDrive0, PhysicalDrive1, etc.
In Linux, run the following command:
sudo fdisk -l
. You'll see a listing of the partitions. Make note of the desired drive in the format of dev/sda0, dev/sda1, etc.In Max OS X, use the following command:
diskutil list
. You'll see a listing of the partitions. Make note of the desired drive in the format of /dev/disk0, /dev/disk1, etc.Now open the CLI of your OS. If you're using Windows as the host OS you will also need to go to the root directory of VirtualBox using the following command: cd C:Program FilesOracleVirtualBox
Creating the VirtualBox Hard Drive
Now you can run the command to create the virtual hard drive file that points to your desired physical drive. For each of the following examples ensure that you input the desired names between the arrows and replace the number or pound sign with your desired drive number.
For Windows:
VBoxManage internalcommands createrawvmdk -filename 'C:Users<user_name>VirtualBox VMs<VM_folder_name><file_name>.vmdk' -rawdisk .PhysicalDrive#
For Linux:
VBoxManage internalcommands createrawvmdk -filename '</path/to/file>.vmdk' -rawdisk /dev/sda
For Mac OS X:
VBoxManage internalcommands createrawvmdk -filename '</path/to/file>.vmdk' -rawdisk /dev/disk#
This VMDK will be a very small file that simply points to your physical drive. Now you can attach the VMDK to your VM. To do so, open the VirtualBox GUI, select the desired VM, click Settings, click Storage, click Add Hard Disk button, select Choose existing drive, and then select the VMDK file you just created.
You can now run the VM that will boot from the physical drive you defined when creating the VMDK file. If you need additional help you can refer to the official VirtualBox documentation on this topic.
Disk Image Mac Os
Eric Geier is a freelance tech writer — keep up with his writings on Facebook. He's also the founder of NoWiresSecurity, a cloud-based Wi-Fi security service, and On Spot Techs, an on-site computer services company.
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Os X Disk Image
PowerPC Macs such as G3's and G4's can boot off of USB sticks, even if this functionality has been buried so deep in technical details that almost nobody knew about it until nobody used G3's anymore. If you're a collector or hobbyist and got a G3 or G4 and would like to install Mac OS 8, 9 or Mac OS X on it but that the CD/DVD drive is broken, here's a complete guide that will prove to be useful to you. Reds kingdom 1 1. It will let you achieve this task in a matter of seconds, super easily using a normal Windows PC. I'll demonstrate how to 'burn' various bootable Mac OS 9 CD images (but you could use this tutorial for any Mac OS version really) onto an USB stick using the free, simple and super useful HDD Raw Copy Tool under Windows. You can also achieve what's described in this article under Mac OS X using the Terminal. Using this software, I successfully booted a .TOAST CD image made with Roxio Toast under Mac OS 9, a .DSK hard drive image made with QEMU, an .ISO CD image from a real Mac OS CD dumped with PowerISO and even a .IMG hard drive image made with SheepShaver.. all of them burned onto my old 4GB USB stick on my DV+ G3 iMac from summer 2000. QUICK WARNING IF YOU'RE ABOUT TO CLONE A MAC OS 9 INSTALL CD!Some versions of Mac OS 9 install disks will refuse to boot (and/or install) from an unlocked drive (such as an USB stick) as it was supposed to be a copy protection scheme (I guess).. so to overcome this, I suggest that you boot from an already installed Mac OS 9 system folder. You could make one yourself using an emulator (SheepShaver or QEMU) and on that disk image, you could also put various useful tools for mounting disk images, expanding archives (DiskCopy, Toast, Stuffit Expander, etc..) and while you're at it, you could also copy that Mac OS 9 CD image as is on the same disk. Once you're booted off of this already installed Mac OS 9 disk image you made, lock and mount the Mac OS 9 CD image file and launch the installer from there, which will enable you to install Mac OS 9 onto your Mac's hard drive without a hitch. If this sounds like too advanced or time consuming for you, then just grab my own Mac OS 9.2.2 bootable USB stick disk image here and boot your PowerMac with it :P COMPRESSED FORMATS AND DMG FILES..Before you begin, if your disk image is zipped or compressed, make sure to expand/uncompress it first. This software does not take ZIP files, it only takes the uncompressed disk image (.iso, .dsk, .toast, etc.. not .zip, .sit, .7z, etc..). Also, you CANNOT directly write DMG images, because they are compressed. So, if you want to write a DMG image, you have to convert it to ISO first. You can do that using PowerISO in 5 seconds: Open the DMG file in PowerISO, then select TOOLS menu > CONVERT.. and then in the 'Convert' window that will appear, make sure you tick the ISO checkbox, set the destination save file path and hit OK to save the ISO file. 1) Grab a copy of the free, simple and useful HDD Raw Copy Tool , unzip it and have a disk image you want to burn handy. 2) Plug in your USB stick in an USB port on your PC and then launch HDD Raw Copy. See at the top/left corner it says SOURCE. So, now double click the line that says 'FILE - Double-click to open file'. Comic life 3 3 5 3. 3) Make sure the type drop-down menu (bottom/right) is set to 'All Files (*.*)' and open the disk image you want to 'burn' onto your USB stick. 4) Now, see at the top/left corner it says TARGET, so click the USB line that shows the USB stick you want to write the image to. 5) The progress window will appear, so click START at the bottom/right and let it write all the sectors to your USB stick. Then you're done! Just exit the program and safely eject your USB stick! Done :) Note: If you need instructions on how to boot an old G3 or G4 Mac using that USB stick with the help of Open Firmware then make sure to read/follow the article that explains that procedure. |