8 VBoxManage sataportcount This determines how many ports the SATA controller should support. hostiocache Configures the use of the host I/O cache for all disk images attached to this storage controller. For details, please see chapter 5.7, Host I/O caching, page 80. remove Removes the storage controller from the VM config. 8.18 VBoxManage bandwidthctl This command creates/deletes/modifies bandwidth groups of the given virtual machine: VBoxManage bandwidthctl uuid|vmname --name name [--add disk [--delete] [--limit MB/s] See chapter 5.8, Limiting bandwidth for disk images, page 80 for an introduction to bandwidth limits. The parameters mean: uuid|vmname The VM UUID or VM Name. Mandatory. name Name of the bandwidth group. Mandatory. add Creates a new bandwdith group with the given type. delete Deletes a bandwdith group if it isn’t used anymore. limit Sets the limit for the given group to the specified amount. Can be changed while the VM is running. 8.19 VBoxManage showhdinfo This command shows information about a virtual hard disk image, notably its size, its size on disk, its type and the virtual machines which use it. Note: For compatibility with earlier versions of VirtualBox, the “showvdiinfo” com- mand is also supported and mapped internally to the “showhdinfo” command. 8.20 VBoxManage createhd This command creates a new virtual hard disk image. The syntax is as follows: VBoxManage createhd --filename filename --size megabytes [--format VDI|VMDK|VHD] (default: VDI) [--variant Standard,Fixed,Split2G,Stream,ESX] where the parameters mean: filename Allows to choose a file name. Mandatory. size Allows to define the image capacity, in 1 MiB units. Mandatory. format Allows to choose a file format for the output file different from the file format of the input file. 122