OSX disk media is not present

Trying to mount an ext2 / ext3 / ext4 device using external drivers on OSX might bring up the following error:

disk media is not present

sudo dmesg

To fix that a virtual machine helped.

Attaching the external drive using usb, creating a filter for that usb device to forward it to the ubuntu based VM.

fdisk -l

to find the right device.
E.g. /dev/sdd

Now go with fsck.ext3 (for ext3 only)

fsck -y /dev/sdd

-y means answer every question with yes.

For a 2 TB HDD that might take up to several hours, but after that is finished, you can try to mount the drive again.

Mount a VDH file within linux

To mount a VDH (Virtual Hard Disk) file in linux (e.g. ubuntu):

sudo apt-get install virtualbox-fuse
sudo mkdir /mnt/vhd-mountpoint/
sudo vdfuse -f disk.vhd /mnt/vhd-mountpoint/
mkdir /mnt/vhd-mountpoint
sudo mount -o loop  /mnt/vhd-mountpoint/Part1 /mnt/part1

VDH is mostly used within Windows 7 and newer.