The choice technique of U disk format

Make a U disk to start when there are many kinds of formats to choose from, such as: Usb-cdrom format, USB-HDD format, usb-zip format. What kind of format is the best way to start?

According to the test, the best way to boot now is USB-HDD (usb-hdd+), Usb-cdrom, Usb-zip. We do not recommend the use of Usb-cdrom, Usb-zip, the future trend of development is to USB-HDD format unification. In particular, usb-zip this format is less used on the computer, experts say this format is the best compatibility, perhaps the expert lives abroad, where the computer motherboards support this format for more reasons. Usb-zip is the Japanese invention of the format, I guess the Japanese computer is not 100% is to support this format, if you live in Japan should be preferred this format, in China not feasible. Usb-hdd+ is a format peculiar to UltraISO software, which is its own improvement in USB-HDD, its essence or USB-HDD, not only fully compatible with USB-HDD, and have better startup compatibility.

Of course, other formats can be made according to their own needs, but in general the HDD is more generally compatible.