HowTo EASILY Partition your MMC card
- How to create a partition on your MMC card
- This procedure has been tested on a Nokia 770 with ITOS 3.2006.49-2
- First become root
- Install the needed packages and create partitions
- Now it's time to format the partitions
- In order to mount the partitions
How to create a partition on your MMC card
This procedure has been tested on a Nokia 770 with ITOS 3.2006.49-2
WARNING:
WHEN PARTITIONING AND FORMATTING YOUR MMC CARD, ALL DATA WILL BE ERASED.
SO THAT YOU SHOULD BACKUP A COPY OF IT AT YOUR DESKTOP PC
IN CASE THERE'S SOME VALUABLE DATA INSIDE.
First become root
First of all you need to be able to get ROOT access from an Xterm on your Tablet. If you don't know how to do it, please follow this link, and come back when ready:
http://maemo.org/community/wiki/HowTo_EASILY_BecomeRoot/
Install the needed packages and create partitions
Open an Xterm on your device and type as ROOT (for N800 you need to unmount /media/mmc2 also):
[note: on the N800 the filesystem mounted under /media/mmc1 is the external media card and the internal card is mounted under /media/mmc2. the device that is mounted under /media/mmc1 is /dev/mmcblk1 and not mmcblk0 that is mounted under /media/mmc2. If you plan to format the external media card replace mmcblk0p with mmcblk1p]
# apt-get install e2fsprogs # umount /media/mmc1 # umount /media/mmc2 (for N800 only!) # sfdisk /dev/mmcblk0 /dev/mmcblk0p1:1,15000,6 /dev/mmcblk0p2:15001,, /dev/mmcblk0p3: /dev/mmcblk0p4:
This will create two partitions in a 1GB RS-MMC card: the first one is VFAT (that's what number 6 means); the second one is LINUX_83. The size of the first one is almost 480MB (that's the meaning of the 15000); the second one is sized till the end of the card (that's what ,, means). Partitions third and fourth are empty. You may calculate your partitions based in my description, or read more about SFDISK. (Actually 15000 means cylinders, being each one of 32KB. So that 15000 cylinder x 32 Kbytes/cylinder = 480Mbytes. This means that 30000 cylinder x 32 Kbytes/cylinder = 960Mbytes). I suggest you to copy my example and just modify it slightly.
It is supposed that without any previous knowledge you should be able to accomplish the whole procedure. Ask for help in case something goes wrong. I'll be happy to help you at the following e-mail address: sebastian.maemo{AT}gmail.com
Now it's time to format the partitions
Type as root:
# mkdosfs /dev/mmcblk0p1 # shutdown -r now
After it reboots, then open an Xterm and type again as root:
# mke2fs /dev/mmcblk0p2 # shutdown -r now
In order to mount the partitions
The VFAT partition will be mounted by the system automagically at start-up. To mount the EXT2 partition you must open an Xterm and type as root:
# insmod /mnt/initfs/lib/modules/current/ext2.ko # mount /dev/mmcblk0p2 /media/mmc2