Change the USB drive capacity

"How to format the USB/Pen drive to a different capacity"

When I need to reinstall OS on my Dell PowerVault 745N, I was stuck with the issue of a 64MB USB drive as the only way to boot it with creating a boot image on a 64 MB USB drive, but in this time I could not found a USB drive with a capacity of 64 MB, so I boot a machine (removed the hard disk power connector and put a high capacity (in my case 4 GB USB drive)) with Windows XP bootable cd, after it loaded all the installable files in the RAM, at this time it detected the USB Drive and asked me if I want to create a partition on it, I said yes and created a partition of 64MB, after this I turned the power off of the machine, took out the USB Drive and put it in another PC, format it and voila I have my 64MB USB Drive ready.