Take a look at McAfee support article KB67088 - 'How to create a Windows XP boot CD including McAfee Command Line Scanner.' but please consider the caution in the article: 'This solution is largely based on non-McAfee software and is not supported by McAfee. Usage of this article is entirely at your own risk.'
thanks a lot. This works fine to create a boot CD. But how to create a XP boot USB (stick) device? It's much more better to use a USB device, because it's faster to update the DAT signatures.
That I don't know, although I would hazard a guess and say it's not likely to be very different in principle.
Although updating dats on usb is easier because it's writable, if you are planning this for malware cleanup I would say using a witeable media device is a potential risk.
I would say a mix wound by the best:
booting from cd and adding downloadet datfile via usbstick to the local folder ...