Obsolete info with AstLinux 1.2.5 and later. Use the ISO Installer Image.
You can convert an astlinux-XX.img file to a VirtualBox .vdi file and have a bootable system with a few simple steps.
Example:
gunzip astlinux-1.2.3-asterisk-11.18.0.img.gz
VBoxManage convertfromraw -format VDI astlinux-1.2.3-asterisk-11.18.0.img astlinux-1.2.3.vdi
The formats VDI, VMDK and VHD are supported.
Here is the complete manual of the VBoxManage convertfromraw command.
Then you can then resize the image…
Usage:
VBoxManage modifyhd --resize <new size in MB> <path to image>
Example (let's say 2 GB):
VBoxManage modifyhd --resize 2048 astlinux-1.2.3.vdi
Then simply create a new VirtualBox virtual machine using this .vdi file as the disk (I used a network bridge (en0) and the PCnet-Fast III adapter for the 'geni586' image on a Mac).
Start the AstLinux Virtual Machine…
Finally, configure using the normal setup.