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I've been asked to format a USB Drive with a larger Allocation Unit Size than the default. I'm using a Mac, Snow Leopard. In Disk Utility, I am unable to see anything to do with Allocation Unit Size. A bit of Googling suggests it might be called Cluster Size, but I can't see anything for that, either. Does anyone know if it's possible to format a drive with FAT and use a larger than default Allocation Unit Size / Cluster Size?
1Yep, that does appear to have the answer, thanks. The -c option says "Sectors per cluster. Acceptable values are powers of 2 in the range 1 through 128", and I had been expecting a size in bytes... so if I was to want 32KB (the value that I've been told to use), what value do I choose? 15, since 2^15 is 32,768...? – Kenny – 2012-03-26T21:47:36.940