User manual

So you know your starting point. Make sure to write down the number of bytes on the card (in
this example, 2021654528).
Command (m for help): [p]
Disk /dev/sdc: 2021 MB, 2021654528 bytes
255 heads, 63 sectors/track, 245 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 246 1974240 + c W95 FAT32 (LBA)
Partition 1 has different physical/logical endings:
Phys = (244, 254, 63) logical = (245, 200, 19)
6、Delete any partitions that are there already
Command (m for help): [d]
Selected partition 1
7、Set the Geometry of the SD Card
If the print out above does not show 255 heads, 63 sectors/track, then do the following expert
mode steps to redo the SD Card:
1）、Go into expert mode.
Command (m for help): [x]
2）、Set the number of heads to 255.
Expert Command (m for help): [h]
Number of heads (1-256, default xxx): [255]
3）Set the number of sectors to 63.
Expert Command (m for help): [s]
Number of sectors (1-63, default xxx): [63]
4）Now Calculate the number of Cylinders for your SD Card.
#cylinders = FLOOR (the number of Bytes on the SD Card (from above) / 255 / 63 / 512 )
So for this example: 2021654528 / 255 / 63 / 512 = 245.79. So we use 245 (i.e. truncate, don't
round).
5）Set the number of cylinders to the number calculated.
Expert Command (m for help): [c]
Number of cylinders (1-256, default xxx): [enter the number you calculated]
6）Return to Normal mode.
Expert Command (m for help): [r]