pc-98-floppy-fmt-1.2

1.2M (1M) floppy format
1.232KiB
1024 (bytes/sector) * 1232 (sectors)

mformat command:
mformat -t77 -h2 -s8 -S3 -c1 -m0xfe -r6
  -S3: sector size= 1 << (sizecode+7) = 1024
  -c1: sectors per cluster= 1
  -m0xfe: media descriptor
  -r6: root sectors (192 entries)

device information:
===================
filename="/dev/usbfd0"
sectors per track: 8
heads: 2
cylinders: 77

mformat command line: mformat -t 77  -h 2 -s 8 -S 3 a:

bootsector information
======================
banner:"NEC  5.0"
sector size: 1024 bytes
cluster size: 1 sectors
reserved (boot) sectors: 1
fats: 2
max available root directory slots: 192
small size: 1232 sectors
media descriptor byte: 0xfe
sectors per fat: 2
sectors per track: 8
heads: 2
hidden sectors: 0
big size: 0 sectors
physical drive id: 0x80
reserved=0x0
dos4=0x29
serial number: 051011E6
disk label="NO NAME    "
disk type="FAT12   "