Hello,
I looked at some post regarding my problem, but I find nothing to solve it.
So, I have a 8 GB USB stick format, impossible to transfer a 4GB file,for the switch.
I tried the Convert command,but does not work, and right click on the key, not NTFS format proposed.
Yes that is right. In general case we format pen drive into Fat or Fat32. But with these format we can not copy file that have size more than or equal 4GB. So you have to format your pen drive partition into NTFS.
Then you can transfer 4GB or greater size files. To convert pen drive’s partition into NTFS you have to use command line interface. Follow these steps. I assume my pen drive's address is H:
1. Click Start button
2. Then click Run
3. And write cmd  then press enter to open command prompt window.
In the command prompt write these commands one by one and press enter after each line
c:convert H: /fs:ntfs
You will see this message
The type of the file system is FAT.
Convert cannot run because the volume is in use by another
Process. Convert may run if this volume is dismounted first.
ALL OPENED HANDLES TO THIS VOLUME WOULD THEN BE INVALID.
Would you like to force a dismount on this volume? (Y/N)
 At the last line you press Y and hit enter.
If there is no problem then your drive will be converted into NTFS file system.
Joshua
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