Step 1:
Create a new Virtual Machine. Select Custom (advanced).
Step 2 Choose the Virtual Machine Hardware Compatibility. Just click on Next for defaults.
Step 3
Select Installer disc image file (iso). Browse to your downloaded Backtrack 5 R1 ISO file.
Step 4
Select Linux, then choose Other Linux 2.6.x kernel as the version.
Step 5
Name your Backtrack 5 R1 Virtual Machine.
Step 6 Processor Configuration. Click Next for default (you can edit the processor and core values if your PC hardware can support it.)
Step 7
Specify amount of memory allocated to the virtual machine. I choose 512 MB for faster processing since my PC hardware can handle this. You can increase or decrease as you like, but the recommended is 256MB.
Step 8
Select the Network connection. Choose bridged networking if you wanted it to have access to your external Ethernet network. Choose NAT if you wanted it to have Eternet connection using hosts IP address. I will be using NAT, because this will be a private virtual lab.
Step 9 Select SCSI adapter type. Choose LSI Logic Step 10 Select Create a new virtual disk. Step 11 Select SCSI.
Step 12
Set Maximum disk size. I recommend you to select 20GB above for better performance in Backtrack. Choose Store virutal disk as a single file. Step 13 Specify disk file. Just click next. Step 14 Check Power on this virtual machine after creation checkbox.
Step 15
Backtrack should be loading and booting.
After Backtrack loading finishes, type in
startx to get in gui mode.
Step 16
Open the Install Backtrack shortcut icon in Desktop. Click forward and follow the instructions.