To modify the QuickCAST Server Legacy Mode default boot menu:
1. Navigate to c:\uxd\pxelinux.cfg folder
The PXELINUX.CFG folder is where all the Legacy Mode boot menu(s) are stored.

2. To edit the default main menu, open MENU with notepad.
3. Once the file is open, scroll down until you see the first menu option. In this example, the first menu option is Windows PE Mode:
label 0.1
menu label Quick Assessment
text help
Test Core System Components.
endtext
kernel syslinux\memdisk
append initrd=diag\qck.imz keeppxe
4. Let's assume you would like the first menu option changed from Quick Assessment to Dell Laptops. To do this:
a. Change
menu label Quick Assessment
to
menu label Dell Laptops
b. Change the description
Test Core System Components.
to
Test Dell Laptops
c. Change the diagnostic image
append initrd=diag\qck.imz keeppxe
to
append initrd=diag\delllaptops.imz keeppxe
That's it! It really is that simple.