| 1 | <?xml version="1.0" encoding="UTF-8"?>
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| 2 | <!DOCTYPE topic
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| 3 | PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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| 4 | <topic xml:lang="en-us" id="vboximg-mount">
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| 5 | <title>vboximg-mount: A Utility for FUSE Mounting a Virtual Disk Image</title>
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| 6 |
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| 7 | <body>
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| 8 | <p>
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| 9 | <userinput>vboximg-mount</userinput> is a command line utility for Mac
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| 10 | OS and Linux hosts that provides raw access to an Oracle VM VirtualBox
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| 11 | virtual disk image on the host system. Use this utility to mount,
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| 12 | view, and optionally modify the disk image contents.
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| 13 | </p>
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| 14 | <p>
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| 15 | The utility is based on Filesystem in Userspace (FUSE) technology
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| 16 | and uses the VirtualBox runtime engine. Ensure that Oracle VM VirtualBox
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| 17 | is running on the host system.
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| 18 | </p>
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| 19 | <note>
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| 20 | <p>
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| 21 | When using <userinput>vboximg-mount</userinput>, ensure that the
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| 22 | following conditions apply:
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| 23 | </p>
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| 24 | <ul>
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| 25 | <li>
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| 26 | <p>
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| 27 | The disk image is not being used by any other systems, such
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| 28 | as by guest VMs.
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| 29 | </p>
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| 30 | </li>
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| 31 | <li>
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| 32 | <p>
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| 33 | No VMs are running on the host system.
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| 34 | </p>
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| 35 | </li>
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| 36 | </ul>
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| 37 | </note>
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| 38 | <p>
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| 39 | Raw access using FUSE is preferred over direct loopback mounting
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| 40 | of virtual disk images, because it is snapshot aware. It can
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| 41 | selectively merge disk differencing images in an exposed virtual
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| 42 | hard disk, providing historical or up-to-date representations of
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| 43 | the virtual disk contents.
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| 44 | </p>
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| 45 | <p>
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| 46 | <userinput>vboximg-mount</userinput> enables you to view information
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| 47 | about registered VMs, their attached disk media, and any
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| 48 | snapshots. Also, you can view partition information for a disk
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| 49 | image.
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| 50 | </p>
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| 51 | <p>
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| 52 | The <userinput>vboximg-mount </userinput>command includes experimental
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| 53 | read-only access to file systems inside a VM disk image. This
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| 54 | feature enables you to extract some files from the disk image
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| 55 | without starting the VM and without requiring third-party file
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| 56 | system drivers on the host system. FAT, NTFS, ext2, ext3, and ext4
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| 57 | file systems are supported.
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| 58 | </p>
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| 59 | <p>
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| 60 | Use the <codeph>--help</codeph> option to view information about
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| 61 | the <userinput>vboximg-mount</userinput> command usage. The complete
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| 62 | command reference is described in
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| 63 | <xref href="man_vboximg-mount.dita"/>.
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| 64 | </p>
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| 65 | <p>
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| 66 | When <userinput>vboximg-mount</userinput> mounts an Oracle VM VirtualBox
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| 67 | disk image, it creates a one level deep file system at a mount
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| 68 | point that you specify. The file system includes a device node
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| 69 | that represents the synthesized disk image as a readable or
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| 70 | readable-writeable bytestream. This bytestream can be mounted
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| 71 | either by using the host OS or by using other FUSE-based file
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| 72 | systems.
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| 73 | </p>
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| 74 | </body>
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| 75 |
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| 76 |
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| 77 | </topic>
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