Mount a VirtualBox drive image (vdi)?


Many users prefer to test ReactOS under emulators and virtualization software like QEMU or VMware, but for testing their software they will need to copy their files into the .iso images and add them into proper directories which can become a difficult job. A way around this is to mount the virtual hard drives as disk drives attached to the system itself (an alternative way might be to have a machine with FTP or HTTP server and use ReactOS ftp or iexplore to receive files).

In Windows

ImDisk Virtual Disk Driver

Web Site

ImDisk is a virtual disk driver for Windows NT/2000/XP/2003/Vista/2008. It can use one or more disk image files to create virtual hard disk, floppy or CD/DVD drives .The install package installs a console-mode control program called imdisk.exe and a Control Panel applet. After install is finished, type imdisk without parameters for syntax help or double click the ImDisk icon in the Control Panel. It also adds a menu item in Windows...

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Tool for fixed size Disk Drives:
It can be done with static vdi images (Fixed Size, not dynamically expanding). It is a matter of finding the offset in the image where the partition starts.

Here is page that has a shell script that automates the process for you.

If Dynamic:
Method 1
If you are using a dynamically size image, convert it to a fixed size image (make sure you have the HD space) and then use the above tool (reference):

vditool COPYDD myDynamicDisk.vdi static_dump.vdi

Method 2
Reading up it seems vditool is no longer included. A simple way to create the partition image would be to use gparted iso as a boot disc inside of the Virtualbox VM to create the image of the partition to a location on your network, and then mount that image.

Fuse Module:
There is also a fuse file system for this called vdimount that does this, but I am not sure how well it...

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[SOLVED] Mounting a VirtualBox drive image (vdi) without specifying a loop device

location: - date: January 27, 2013
Hi I'm running VirtualBox on Debian. I use vdfuse to mount my VDI files, running the following commands (showing the sequence for mounting a Windows Server 2008 guest image): sudo vdfuse -w -g -f /mnt/virtualbox/vdfuse sudo mount -o uid=frikdt,gid=frikdt /mnt/virtualbox/vdfuse/Partition1 /mnt/virtualbox/vdi I've been using these for a long time now without any problems. However, every discussion/tutorial I've seen so far includes the loop option; so the second command would become: sudo mount -o loop,uid=frikdt,gid=frikdt /mnt/virtualbox/vdfuse/Partition1 /mnt/virtualbox/vdi The output of the mount command is the same in both cases (and does not mention any loop device): /mnt/virtualbox/vdfuse/Partition1 on /mnt/virtualbox/vdi type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions) Is there any risk in not specifying...

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When creating a virtual machine with VirtualBox, it is easy to choose the wrong size for the virtual HDD. Some day, you might face the issue that there is not enough free disk space left in the virtual machine. Here is how you can resize a VirtualBox HDD image (VDI) without data loss or without reinstalling the guest operating system.

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VirtualBox ships with a console tool VBoxManage, which can do a lot of tasks not accessible from the user interface. For example, using VBoxManage you can

adjust the BIOS date and time for virtual machines

. This tool can be used to resize VirtualBox HDD images.

The command line syntax is as follows:

VBoxManage modifyhd path_to_vdi_file.vdi --resize desrired_size_in_megabytes

For example, let's resize the disk drive connected to my Arch Linux virtual machine. Right now, its HDD size has a capacity of 20 GB:

Let's say I...

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Hello everyone!

This is a bit of a how-to for how to mount a VDI on a SuSE host machine.


On SuSE 11.4 I've tried the qemu-nbd way and have had mixed results. It seems to work best after a fresh reboot.

On Fedora I've successfully gotten libguestfs to work. I'll put a link for those who might be looking for a way to accomplish this on Fedora...on a SuSE Forum. However, due to a compile error I'm not able to get it to work properly, and with this working I'm too lazy try and fix it.

You'll see that I have rsync used in the script; that is because I wanted a backup of the virtual machine without having to send the whole VDI across the network every time.

How to mount a VDI file (as taken from my own documentation):

Download and install libguestfs-mount (libguestfs, library for accessing and modifying VM disk images) or from
Fedora's package manager. From...

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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.

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...

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This tutorial will try to explain how to mount a VirtualBox disk image (VDI) on Ubuntu 15.04 or Ubunu 14.04. It is possible to mount VDI disk on Ubuntu 15.04 with a little tweak. But make sure the virtual disk (VDI) is not being used by other virtual machine.

OK lets get started

First, we will use “nbd” kernel module. On standard Ubuntu installation, the nbd is not included. You can install this kernel module using this command

sudo apt-get install qemu-kvm

Next, load the nbd kernel module

sudo modproble nbd

Now execute this command to access the VDI disk

qemu-nbd -c /dev/nbd0 /home/dhani/Downloads/ubuntu.vdi

Change /home/dhani/Downloads/ubuntu.vdi with your own vdi file. Now check the device with this command to see the partitions in the device

sudo fdisk -l /dev/nbd0


Disk /dev/nbd0: 20 GiB, 21474836480 bytes, 41943040 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size...

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How to mount VirtualBox VDI image files on Linux

How to mount VirtualBox VDI image files on Linux

This describes how to mount a VDI disc image file on Linux. Please note that it will only work with fixed size images, dynamic images will not work! Also your Linux system has to be able to read the used partition format (ntfs, ext3, vfat, ...).

If you want to access a newly created image, you have to create the partitions first and format them. This should be done inside the virtual machine, booted with some Live-CD (e.g. grml).

As the image contains some metadata at the beginning, we have to find out the offset where the actual partition data begins. We will use the VBoxManage command that comes with VirtualBox. user@host:~$ VBoxManage internalcommands dumphdinfo YourImage.vdi --- Dumping VD Disk, Images=1 Dumping VD image "YourImage.vdi" (Backend=VDI) Dumping VDI image "YourImage.vdi" mode=r/w uOpenFlags=8 File=0x007fcac4003910 Header: Version=00010001 Type=2...
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Resize VirtualBox Disk Image -- the easy and the hard way.Today I actually used up the 20GB of virtual disk space I set for the Windows XP I use for specific Windows Software. Who would have thought that an old Windows XP license would be useful again, eh?

After performing a quick search on how to manipulate an existing VDI file, I found a bunch of lengthy guides, all pretty much saying the exact same thing… create a new VDI, load the old and new VDI disk images into a Virtual Machine as a master and slave drive, boot with a gParted or equivalent BootCD image, and then clone the old disk to the new one… or in short: do a lot of steps that take forever, but not what I want: Resize VirtualBox Disk Image.

After flipping through the 10th or so guide, I realized that pretty much all of them were written in 2008… very unusual as bloggers usually write about the same subject on a yearly basis. That in mind, I search a bit more and… BINGO! Since VirtualBox 4 is out, there is...

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My Linux VirtualBox guest OS often runs out of space – I never learn that to build anything in Linux, you need about 10 times the amount of space that you think you need. Also, VirtualBox recommends very small default values, so it is easy to be caught out.

Anyway, here are the current steps to re-size a VirtualBox disk, where Linux is the guest OS and Windows is the host OS.

In this example I am using VirtualBox 4.2.6 (The approach is valid with more recent versions also). The host OS (the one that is running VirtualBox) is Windows 7 and the guest OS that I wish to re-size is Ubuntu. Please backup everything before continuing as something could always go wrong.

Step 1. (Optional) Move the VDI file in Windows

If you need to move the VDI file to another location/physical drive with more space, you can do the following.

With VirtualBox shut down, using Windows Explorer move your vdi file (e.g., “c:\MyLinux.vdi“) to its new location (e.g.,...
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