If you have a USB jump drive that is several gigs in size, Windows may only acknowledge seeing 200mb of space on it. This is a reserved space created by a GUID partition (typically, if the USB Jump Drive is formatted on a Mac computer). This is easily fixed if you format the drive on Mac using Disk Utility using DOS. This is also frequently seen using Mac X Parallels Desktop.
If you don’t have access to a Mac system, download
HP USB Disk Storage Format Tool 2.1.8. This utility erases the hidden GUID
partition and creates a fresh format on your USB jump drive. Window will now recognize the
full capacity of your USB jump drive the next time you insert it.
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