Well it's not as simple as that... Anyway my comp does not support USB 2.0 at boot time so it would take ages to load a 2 Gb image into RAM. Plus when you need to make changes or launch a virus sweep on any old computer around, you can't always start by adding more RAM.
It is your own computer on which you want to prepare your Image that needs more RAM.
In that case you can use grub4dos menu on your HDD instead of USB to boot very fast XPRAM_1.img Image from FiraDisk RAMDISK.
So you don't launch the Image from USB and don't need fast boot from USB.
Simply use BOOT_IMG.exe to Install XPRAM_1.img as boot option in grub4dos menu on your HDD.
In using full XP booting from USB on other computers you don't need that amount of RAM.
I have the feeling that you don't need full XP booting from USB at all.
If you are interested in a handy Service solution,
then boot with LiveXP BootSDI.img or with Portable Windows 7 PE pe3_x86.iso Boot Image File from grub4dos menu.
Those Image files are 120-220 MB and provide a perfect PE environment from which you are able to do your Service work.http://www.911cd.net...o...21883&st=35
Yes but a USB stick could also be a micro-SD card... Just a lot more convenient to carry around than a HDD. Plus you can even put the micro-SD in your digital camera and it will kill 2 birds with one stone.
The portable 2.5 Inch USB-HDD of 320 GB is easy to carry (no power supply needed) .....
Create + Restore will make USB-HDD bootable only on that (type) machine.
Universal means that you want it to be bootable on various types of hardware (e.g. Intel and AMD)
Therefore you need to boot XP from FiraDisk RAMDISK on those machines.
For each type of machine the registry is then learning how to boot
and you will Update the image file with registry settings and the extra installed drivers.
After this learning you have a Universal image which can be Restored on USB-HDD.
Then you are able to boot with XP from USB-HDD on a lot of machines.