Vagrant issue Timed out while waiting for the machine to boot

vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'ubuntu/xenial64'...
==> default: Matching MAC address for NAT networking...
==> default: Checking if box 'ubuntu/xenial64' is up to date...
==> default: Setting the name of the VM: vagrant_default_1516452195026_53624
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
default: Adapter 1: nat
==> default: Forwarding ports...
default: 5000 (guest) => 5000 (host) (adapter 1)
default: 7474 (guest) => 7474 (host) (adapter 1)
default: 7687 (guest) => 7687 (host) (adapter 1)
default: 22 (guest) => 2222 (host) (adapter 1)
==> default: Running 'pre-boot' VM customizations...
==> default: Resized disk: old 10240 MB, req 51200 MB, new 51200 MB
==> default: You may need to resize the filesystem from within the guest.
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
default: SSH address: 127.0.0.1:2222
default: SSH username: vagrant
default: SSH auth method: private key
Timed out while waiting for the machine to boot. This means that
Vagrant was unable to communicate with the guest machine within
the configured ("config.vm.boot_timeout" value) time period.

If you look above, you should be able to see the error(s) that
Vagrant had when attempting to connect to the machine. These errors
are usually good hints as to what may be wrong.

If you're using a custom box, make sure that networking is properly
working and you're able to connect to the machine. It is a common
problem that networking isn't setup properly in these boxes.
Verify that authentication configurations are also setup properly,
as well.

If the box appears to be booting properly, you may want to increase
the timeout ("config.vm.boot_timeout") value.

Run
vagrant destroy

Upgrade Virtualbox and do the vagrant up again

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

in:
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.

Run
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.