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Answered 2009-04-22 03:22:40

Apparently most formatting apps (including Windows) dont format SD cards correctly.

I found some software on Panasonic's site that does, this actually restored a few of my "shrinking" cards to the proper size.

Format mechanism is differ from File System to File system of Operating System.

For example using FAT16/FAT32/NTFS file system in Win-XP or higher, occupies more space for 'System use' functionalities.

In the case of ExFAT(a.k.a. FAT64) file system, it will use less space for 'System use'.

For best result to SD/MMC/SDHC cards, please use Panasonic "SD Memory Card Formatting Software Ver.2.0" which am currently using.

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