/home/user # umount /media/mmc2
/home/user # sfdisk /dev/mmcblk0 << EOF
> EOF
Checking that no-one is using this disk right now ...
OK

Disk /dev/mmcblk0: 62032 cylinders, 4 heads, 16 sectors/track
Old situation:
Units = cylinders of 32768 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/mmcblk0p1 0+ 62031 62032- 1985016 b W95 FAT32
/dev/mmcblk0p2 0 - 0 0 0 Empty
/dev/mmcblk0p3 0 - 0 0 0 Empty
/dev/mmcblk0p4 0 - 0 0 0 Empty
New situation:
No partitions found

sfdisk: no partition table present.
/home/user # mke2fs /dev/mmcblk0p1
mke2fs 1.37 (21-Mar-2005)
/dev/mmcblk0p1 is mounted; will not make a filesystem here!
/home/user # mount /dev/mmcblk0p1 /media/mmc1
/home/user # df -h
Filesystem Size Used Available Use% Mounted on
/dev/mtdblock4 4.0M 2.6M 1.4M 64% /mnt/initfs
none 512.0k 92.0k 420.0k 18% /mnt/initfs/tmp
/dev/mtdblock4 249.5M 170.1M 79.4M 68% /
none 512.0k 92.0k 420.0k 18% /tmp
none 1.0M 52.0k 972.0k 5% /dev
tmpfs 1.0M 0 1.0M 0% /dev/shm
/dev/mmcblk0p1 1.9G 16.0k 1.9G 0% /media/mmc2
/dev/mmcblk0p1 1.9G 16.0k 1.9G 0% /media/mmc1
/home/user #