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multi_partitions [2016/06/14 18:35] (current)
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 +===== Add new partitions to the original microSD =====
 +This article explains how to modify the original partition table for the FoxBox G25, and it can be particularly useful to phisically separate data increasing their safety.
  
 +:!: Please implement this solution on a new microSD, keeping the original one as a backup if something goes wrong.
 +
 +=== 1) Create partitions ===
 +In this step you will need to follow the same procedure used to restore the internal microSD (available [[restore_g25|here]]).
 +\\ Obviously, you will have to modify the structure defined in GParted. As an example we will use:
 +^  Label  ^  Filesystem ​ ^  Dimension (MB)  ^  Type  ^
 +|  kernel ​ |  Fat16  |  32  |  Primary ​ |
 +|  rootfs ​ |  ext4  |  1700  |  Primary ​ |
 +|  data  |  ext4  |  1500  |  Extended ​ |
 +|  data1  |  ext4  |  500  |  Logic  |
 +|  data2  |  ext4  |  500  |  Logic  |
 +|  data3  |  ext4  |  500  |  Logic  |
 +|  swap  |  linux-swap ​ |  Unused space  |  Primary ​ |
 +:id1: Note that the //data// partition has now become Extended, and inside of it we have three //dataN// Logic ones.
 +
 +
 +Moreover you will have to edit the script //​restoreVerC.sh//,​ editing the line shown below:
 +<​code>​
 +Original: sudo tar xvjpSf ./​dataXYZ.tar.bz2 -C /media/data
 +Modified: sudo tar xvjpSf ./​dataXYZ.tar.bz2 -C /​media/​data1
 +</​code>​
 +
 +=== 2) Modify fstab ===
 +Before booting the system, you also have to modify the file// /etc/fstab //as shown below:
 +<​code>​
 +Original: /​dev/​mmcblk0p3 /media/data ext4 noatime 0 1
 +Modified: /​dev/​mmcblk0p3 /media/data ext4 noatime,​sync 0 0
 +</​code>​
 +This will avoid problems during the boot phase, when the automatic filesystem check will parse the Extended partition.
 +
 +=== 3) Mount new partitions ===
 +As for every other Linux system, once the system is working you can mount each new partition with these commands:
 +<​code>​
 +mkdir /mnt/data1
 +mkdir /mnt/data2
 +mkdir /mnt/data3
 +mount /​dev/​mmcblk0p5 /mnt/data1
 +mount /​dev/​mmcblk0p6 /mnt/data2
 +mount /​dev/​mmcblk0p7 /mnt/data3
 +</​code>​
 +Now the device will see all the partitions defined before, and you will be able to work over them as usual.
 +
 +:id1: Add the new partitions to the //fstab// in order to automatically mount them during the boot phase.
multi_partitions.txt ยท Last modified: 2016/06/14 18:35 (external edit)