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Note that you need the qemu command, which is provided on wheezy by the `qemu-system` package.
* Start the VM
- with default CPU (pae)
qemu -enable-kvm -cdrom tails.iso -m 5120 -no-reboot -no-shutdown
- with 486 CPU
qemu -enable-kvm -cpu 486 -cdrom tails.iso -m 5120 -no-reboot -no-shutdown
* Open the qemu console (CTRL-ALT-2).
* Save physical memory to the `tails.dump` file (length is an integer, max size for one dump is 4G = 0xF0000000):
pmemsave <start address> <length> <filename>
e.g for 5G one has to do two dumps:
pmemsave 0 0xF0000000 tails14.dump
pmemsave 0x100000000 0x40000000 tails5.dump
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