Yes, I am sure, because after format in reader SD card doesn't have label.
D:\>dir
Volume in drive D has no label.
Volume Serial Number is 420A-13E9
Directory of D:\
08.02.2013 12:12 <DIR> Sony_Reader
08.02.2013 12:57 245 driveinfo.calibre
08.02.2013 12:53 7*031 metadata.calibre
07.02.2013 23:59 <DIR> OS Firmware
2 File(s) 7*276 bytes
2 Dir(s) 31*683*969*024 bytes free
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