====== Ako vytvarat a namountovat image sd karty na PC ======

Nasledujuci manual ukazuje ako vytvorit image sd karty a ako taky image namountovat pokial obsahuje viac particii.

===== Vytvorenie image do suboru =====
Na vytvorenie image do suboru sa pouzije prikaz dd.
<code>
dd if=/dev/mmcblk0 of=/opt/sd_automat bs=10M
</code>

===== Namountovanie particii z image karty =====
Na namountovanie konkretneho image je potrebne vediet na akom offsete sa particia nachadza. To sa da zistit cez:
<code>
piecka@piecka-NB:/tmp$ fdisk /opt/sd_automat 
You will not be able to write the partition table.

Command (m for help): p

Disk /opt/sd_automat: 4008 MB, 4008706048 bytes
255 heads, 63 sectors/track, 487 cylinders, total 7829504 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0276138c

          Device Boot      Start         End      Blocks   Id  System
/opt/sd_automat1   *        2048     4882431     2440192   83  Linux
/opt/sd_automat2         4882432     5859327      488448   83  Linux
/opt/sd_automat3         5859328     7827455      984064   83  Linux

Command (m for help): q
<code>

Nastavenie cez losetup je nasledovne:
<code>
piecka@piecka-NB:/tmp$ sudo losetup /dev/loop0 /opt/sd_automat -o $((2048 * 512))
piecka@piecka-NB:/tmp$ sudo losetup /dev/loop1 /opt/sd_automat -o $((4882432 * 512))
piecka@piecka-NB:/tmp$ sudo losetup /dev/loop2 /opt/sd_automat -o $((5859328 * 512))
</code>

Samotne namountovanie potom:
<code>
piecka@piecka-NB:/tmp$ mkdir 2
piecka@piecka-NB:/tmp$ mkdir 3
piecka@piecka-NB:/tmp$ mkdir 4

piecka@piecka-NB:/tmp$ sudo mount /dev/loop0 /tmp/2
piecka@piecka-NB:/tmp$ sudo mount /dev/loop1 /tmp/3
piecka@piecka-NB:/tmp$ sudo mount /dev/loop2 /tmp/4
</code>