sd storage partitions

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In this example, the device node assigned is /dev/sdc (a block is 512B large).



To create a partition, at offset 16384 (in sectors of 512 bytes) enter the following command:

u [switch the unit to sectors instead of cylinders]
d [repeat this until no partition is reported by the 'p' command ]
n [create a new partition]
p [create a primary partition]
1 [the first partition]
16384 [starting at offset sector #16384, i.e. 8MB, which leaves enough space for thekernel, the boot loader and its configuration data]
<enter> [using the default value will create a partition that spans to the last sector of the medium]
w [ this writes the partition table to the medium and fdisk exits]


The file system format ext3 or ext4 is a good option for removable media due to the built- in journaling. Run the following command to format the partition:

$ sudo mkfs.ext3 /dev/sdb1

Or

$ sudo mkfs.ext4 /dev/sdb1