formatting a drive to FAT32 with mkdosfs, need some info

I'd like to know how I can specify the cluster size when using mkdosfs /dev/sdx -F 32. I read somewhere that if you want to format it with a 32kb cluster size, this is the command:

mkdosfs /dev/sdx -s 64 -F 32 -I

But, what if I want to format it with a 64kb cluster size? How can I do it? Can someone explain the proper usage of mkdosfs /dev/sdx -s XX in plain words (I'm not a native english speaker)?

Solution 1:

I believe the command is:

sudo mkdosfs /dev/sdXX -s 128 -F 32 

Since you want 64KB clusters, and the -s means sectors per cluster so, you need 128 sectors, because 128*512 byes = 64KB, making a cluster.

If you want the whole disk to contain a single partition, you would use -I option. So, the command becomes,

sudo mkdosfs /dev/sdX -s 128 -F 32 -I

^{Credit goes to this Ubuntu forum thread}