======macOS======

=====Mounting a VHD in macOS=====
Source: [[https://serverfault.com/a/1000645|https://serverfault.com/a/1000645]]\\
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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.

  * Install osxfuse (the successor to macfuse)
  * Install VirtualBox
  * Download the vdfuse source code (vdfuse.c) from https://github.com/Thorsten-Sick/vdfuse (currently at v83 - the original link is pegged to v80).
  * 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/
  * 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}

  * Mount the vhd disk

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

  * Attach the virtual partition blockfiles

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

  * Mount the virtual partition

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

Miraculously, this works a charm!