Chromium OS And Unfromatted USB Flash

Hello,

I Downloaded Chromium OS Hexxhe Vanilla And I Writed it to USB Flash Using IMGwrite and i wait for it until is finsish a message pop up to me that say is succesful i tried to open the flash usb is saying is unformatted i plug it off and plug in again and nothing happened i restarted my PC is Keep Stops In Boot Screen where their is shown F9 for boot menu and Del for .... Etc + i restarted PC over 3 times and is keeping do that problem i tried to plug off the usb flash out and is finally let my PC to boot up i tried this again is also stuck in boot screen in explained about it already .. so i back to windows and tried t format it is saying the full capticy is 2.00 GB i format it and free space is 2.00 GB i tried bootice to restore full captaciy and i did it and restored full capticy with bootice :) i tried much programs i also giving same problem i tried over 13 time with different programs *i tried so much in Img Writer* so what cause this problem :( i tried different 3 Chromium Images and this is not solved problem

Please Help Me! Here Is Info:

USB Flash : SanDisk CruzerBlade 30 GB FAT32 (I Tried NTFS And FAT16 No Different)
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I Wish You Solve My Problem As Fast As Possible And I Will Be Very ThanksFul :)

And Thank You....