# to create FreeBSD 10.0 "problem" from scratch w/VirtualBox (Debian GNU/Linux amd64 host)
# ii  virtualbox                            4.3.2-dfsg-1+b1                    amd64        x86 virtualization solution - base binaries
# ii  virtualbox-dkms                       4.3.2-dfsg-1                       all          x86 virtualization solution - kernel module sources for dkms

wget ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/i386/ISO-IMAGES/10.0/FreeBSD-10.0-RELEASE-i386-bootonly.iso
VBoxManage createvm --name freebsdtest --ostype FreeBSD --register
VBoxManage storagectl freebsdtest --name "SATA Controller" --add sata --controller IntelAHCI
VBoxManage modifyvm freebsdtest --memory 512
VBoxManage modifyvm freebsdtest --nic1 bridged --nictype1 82545EM --bridgeadapter1 eth0
VBoxManage createhd --filename ~/VirtualBox\ VMs/freebsdtest/freebsdtest.vdi --size 10240 --format VDI 
VBoxManage storageattach freebsdtest --storagectl "SATA Controller" --port 0 --device 0 --type hdd --medium ~/VirtualBox\ VMs/freebsdtest/freebsdtest.vdi
VBoxManage modifyvm freebsdtest --vrdeproperty VNCPassword=foobarbaz
VBoxManage modifyvm freebsdtest --vrdeauthlibrary null
VBoxManage modifyvm freebsdtest --vrdeport 5900
VBoxManage storageattach freebsdtest --storagectl "SATA Controller" --port 1 --device 0 --type dvddrive --medium FreeBSD-10.0-RELEASE-i386-bootonly.iso
VBoxManage modifyvm freebsdtest --hwvirtex off 
VBoxManage modifyvm freebsdtest --chipset piix3
VBoxManage modifyvm freebsdtest --longmode on
VBoxManage modifyvm freebsdtest --ioapic on

# now, in the VM, do the following - see ufs.png
mdconfig -a -t malloc -s 128m
newfs /dev/md2
cd /tmp
mkdir MD2
mount /dev/md2 MD2
cd MD2
cp /boot/kernel/kernel .
cp kernel k1
cp k1 k2
cp k2 k3
ls -la	# make sure the are the right size
sha256 k*	# the files will have different contexts (most likely nulls)

# now, try this (after removing md2 or just rebooting) - see msdos.png
mdconfig -a -t malloc -s 128m
newfs_msdos /dev/md2
cd /tmp
mkdir MD2
mount -t msdos /dev/md2 MD2
cd MD2
cp /boot/kernel/kernel .
cp kernel k1
cp k1 k2
cp k2 k3
ls -la	# make sure the are the right size
sha256 k*	# the files will be the same, this time