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?
You should be able to do this from a command line using the
The command takes many arguments that you may want to explore..
I am sure you could google around for newfs_msdos for some usage examples and also
Hope this helps!
For example to format FAT32 with 64kb allocation unit size:
with 32kb allocation unit size should be use 64 cluster size: