2012年2月2日 星期四

USB flash problem, 沒有partition, superfloopy

最近有一個問題
就是用WINCE 5.0 format 的 USB Flash
沒辦法在USB200下讀取

仔細檢驗了一下不能讀取的USB Disk
發現竟然沒有partition table

查了一下 沒有 Partition 的 Disk
就叫 Super Floopy

http://msdn.microsoft.com/en-us/windows/hardware/gg463525


Q.What about removable media?
  
A.Removable media must be MBR or "superfloppy."
Q.What is a superfloppy?
  
A.
Removable media without either GPT or MBR formatting is considered a "superfloppy." The entire media is treated as a single partition.
The media manufacturer performs any MBR partitioning of removable media. If the media does have an MBR, only one partition is supported. There is little user-discernible difference between MBR-partitioned media and superfloppies.
Examples of removable media include floppy disk drives, JAZ disk cartridges, magneto-optical media, DVD-ROM, and CD-ROM. Hard disk drives on external buses such as SCSI or IEEE 1394 are not considered removable.

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