Create Partitioning using manual commands

Create the partitions

• Use the command 'sudo fdisk -l' in order to see the mounted point of the MMC under /dev directory.

user@ubt1004:~/Projects$ sudo fdisk -l

Disk /dev/sda: 53.7 GB, 53697576960 bytes
255 heads, 63 sectors/track, 6528 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0007157d

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          19      145408   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              19        6529    52290561    5  Extended
/dev/sda5              19        6286    50337792   83  Linux
/dev/sda6            6286        6529     1951744   82  Linux swap / Solaris

Disk /dev/sdb: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000bc718

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       13054   104856223+  83  Linux

Disk /dev/sdc: 997 MB, 997720064 bytes
31 heads, 62 sectors/track, 1013 cylinders
Units = cylinders of 1922 * 512 = 984064 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0005e030

   Device Boot      Start         End      Blocks   Id  System

• [--Linux-host-] sudo /sbin/fdisk /dev/sdc (use the directory found in previous command instead of ‘/dev/sdc’. In the below screen shot the MMC card is mounted on /dev/sdc1 and /dev/sdc2)

• This will give you a menu, then follow the next steps:
• set the current partitions on the MMC card (option p)

• delete all the current partitions (option d) (Perform that command till all partitions are deleted)

• add a new partition (option n)
  • make a primary partition (option p)
  • Select the partition number as 1.
  • Select the first cylinder as 1 (the default gets taken on pressing enter) and last cylinder as 100M.

• Add a new partition (option n)
  • make a primary partition (option p)
  • Select the partition number as 2.
  • Select the first cylinder as 101 (or use default by pressing enter) and select the last cylinder as default value by pressing enter.

• Select the file system (option t).
  • Select the first partition by pressing 1
  • Select the file system as FAT32 (option b)
  • Select option‘t’ again.
  • Select the second partition by pressing 2
  • Select the file system as ext2 (option 83)

• Start writing and exit (option w)

Format

• Unmount the Mobile MMC card.
  • umount /dev/<label> for example: umount/dev/sdb
• Format and Create a label for it. (Note that the labels given below are just for example and they can be renamed as as per your choice)
  • [--Linux-host-] sudo mkfs.vfat –n <Label1> /dev/sdc1

  Eg: sudo mkfs.vfat –n BOOT /dev/sdc1

• [--Linux-host-] sudo mkfs.ext2 –L <Label2> /dev/sdc2

 Eg: sudo mkfs.ext2 –L ROOT /dev/sdc2

• This partitions the Mobile MMC card with FAT and ext2 partitions.
• Now mount the Mobile MMC card, and you will see two partitions with <Label1> and <Label2>.

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