efi msdos puzzle

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

gpt add -a 1024k -l efi0 -s 256M -t efi wd0   (on -current/amd64)

dk0: efi0, 524288 blocks at 2048, type: msdos

# newfs_msdos -F 32 -b 4096 /dev/rdk0
newfs_msdos: 65404 clusters too few clusters for FAT32, need 65525

but 65525 * 8 = 524200 < 524288 ?

Where does 65404 come from?


Cheers,

Patrick