Mount an VHD on Mac OS X

Solution 1:

Finally I got it working. So in summary here are the steps to perform

1. Install macfuse
2. Install Virtual Box
3. Compile vdfuse as mentioned in the question

4. Mount the vhd disk

   sudo ./vdfuse -tVHD -w -f/Path/To/VHD /Path/To/Mountpoint

5. Attach the virtual partition blockfiles

   hdiutil attach -imagekey diskimage-class=CRawDiskImage -nomount /Path/To/Mountpoint/PartitionN

6. Mount the virtual partition

   mount -t YourFS /dev/diskK /Path/To/ParitionMountPoint

Solution 2:

This worked for me on Mountain Lion. No installation or compilation necessary:

hdiutil attach -readonly -imagekey diskimage-class=CRawDiskImage <Path to .vhd file>

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Solution 3:

It's now 2020, and these 10-year-old instructions almost worked. Here's what I did to mount an old Backup Image from Windows 7 on my Mojave Mac, based on the accepted answer from Jan Bernlöhr, as well as the script in the question.

1. Install osxfuse (the successor to macfuse)
2. Install VirtualBox
3. Download the vdfuse source code (vdfuse.c) from https://github.com/Thorsten-Sick/vdfuse (currently at v83 - the original link is pegged to v80).
4. Download the VirtualBox headers, but you have to get a version from 2012. I used the following command: svn co -r '{20120801}' http://www.virtualbox.org/svn/vbox/trunk/include/
5. Use the following build instructions, adapted from the question, but with a few small alterations (64-bit build, and newer VirtualBoxes don't seem to have VBoxREM.dylib:

  infile=vdfuse.c
  outfile=vdfuse
  incdir="$(pwd)/include"
  INSTALL_DIR="/Applications/VirtualBox.app/Contents/MacOS"
  CFLAGS="-pipe"

  gcc -arch x86_64 "${infile}" \
         "${INSTALL_DIR}"/VBoxDD.dylib \
         "${INSTALL_DIR}"/VBoxDDU.dylib \
         "${INSTALL_DIR}"/VBoxVMM.dylib \
         "${INSTALL_DIR}"/VBoxRT.dylib \
         "${INSTALL_DIR}"/VBoxDD2.dylib \
        -o "${outfile}" \
        -I"${incdir}" -I"/usr/local/include/fuse" \
        -Wl,-rpath,"${INSTALL_DIR}"  \
        -lfuse_ino64  \
        -Wall ${CFLAGS}

6. Mount the vhd disk

   sudo ./vdfuse -tVHD -w -f/Path/To/VHD /Path/To/Mountpoint

7. Attach the virtual partition blockfiles

   hdiutil attach -imagekey diskimage-class=CRawDiskImage -nomount /Path/To/Mountpoint/PartitionN

8. Mount the virtual partition

   mount -t YourFS /dev/diskK /Path/To/ParitionMountPoint

Miraculously, this works a charm!