When using Back|Track 3 in VirtualBox, booting the iso and selecting the normal boot options or FLUX, the screen loads, appears to start loading X, but appears to then continuously crash and reload X over and over. All I can see is a cursor then a black screen, then a cursor again. The only way to get it to boot is with the 1024x768 VESA menu specified in the initial booting.
How can I install from VESA boot, backtrack3? It is possible?
Reading the backtrack-hd-install.pdf from offensive-security.com…
When i type first fdisk dev/sda I get sda not found just when I'm in VESA boot.
When I select the normal boot or FLUX also I get this message:

hxxp://img84.imageshack.us/img84/8346/vitualboxinformationlc4.jpg

p.s.
Here it is a description from performance in virutalbox:
hxxp://img74.imageshack.us/img74/7199/vitualboxdescriptionof1.jpg