You may normally boot from a hard drive, but you may sometimes need to boot from a floppy disk, a USB memory key, a CD or DVD, or a network.
您可能通常从硬盘驱动器引导，但有时可能需要从软盘、usb内存密匙、CD或DVD，或者网络引导。
A floppy disk may be suitable if you only work with very small files, or a USB flash memory key may suffice for medium-sized files, but neither of these is ideal.
如果仅使用非常小的文件，可以使用软盘；对于中等大小的文件，US b闪存盘可能就足够了，但是它们都不是理想的方法。
The system has several key advantages such as simple hardware, high operating speed and high stability. It is easy to get data from USB, and deal with these data and save them in memory.
系统具备电路简洁、处理速度快、可靠性高等优点，能便捷地从USB中获取花型数据并进行花型处理和存储。
The system has several key advantages such as simple hardware, high operating speed and high stability. It is easy to get data from USB, and deal with these data and save them in memory.
系统具备电路简洁、处理速度快、可靠性高等优点，能便捷地从USB中获取花型数据并进行花型处理和存储。
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