Sun Microsystems VIRTUALBOX 3.0.0 - Manual (Page 108)

8 VBoxManage reference
• --pae on|off: This enables/disables PAE (see chapter 3.7.2.2 , “Processor” tab ,
page 48 ).
• --hwvirtex on|off|default: This enables or disables the use of hardware
virtualization extensions (Intel VT-x or AMD-V) in the processor of your host
system; see chapter
1.2 , Software vs. hardware virtualization (VT-x and AMD-V) ,
page 11 .
• --nestedpaging on|off: If hardware virtualization is enabled, this addi-
tional setting enables or disables the use of the nested paging feature in the pro-
cessor of your host system; see chapter
1.2 , Software vs. hardware virtualization
(VT-x and AMD-V) , page 11 .
• --vtxvpid on|off: If hardware virtualization is enabled, for Intel VT-x only,
this additional setting enables or disables the use of the tagged TLB (VPID) fea-
ture in the processor of your host system; see chapter
1.2 , Software vs. hardware
virtualization (VT-x and AMD-V) , page 11 .
• --accelerate3d on|off: This enables, if the Guest Additions are installed,
whether hardware 3D acceleration should be available; see chapter 4.8 , Hard-
ware 3D acceleration (OpenGL and DirectX 8/9) , page 71 .
• You can influence the BIOS logo that is displayed when a virtual machine starts
up with a number of settings. Per default, a VirtualBox logo is displayed.
With --bioslogofadein on|off and --bioslogofadeout on|off, you
can determine whether the logo should fade in and out, respectively.
With --bioslogodisplaytime you can set how long the logo
should be visible, in milliseconds.
With --bioslogoimagepath you can, if you are so inclined,
replace the image that is shown, with your own logo. The image must be an
uncompressed 256 color BMP file.
• --biosbootmenu disabled|menuonly|messageandmenu: This specifies
whether the BIOS allows the user to select a temporary boot device. menuonly
suppresses the message, but the user can still press F12 to select a temporary
boot device.
• --boot<1-4> none|floppy|dvd|disk|net: This specifies the boot order
for the virtual machine. There are four “slots”, which the VM will try to access
from 1 to 4, and for each of which you can set a device that the VM should
attempt to boot from.
• --snapshotfolder default|: This allows you to specify the folder
in which snapshots will be kept for a virtual machine.
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