root=/dev/mmcblk0p2 rootfstype=ext4
README.1st
[..]
RPi_Easy_SD_Card_Setup
===============================
Manually resizing the SD card partitions (Optional)
http://elinux.org/RPi_Easy_SD_Card_Setup
1. /dev/mmcblk0 : raspiberry pi running..
root@slitaz:~# fdisk -l
Disk /dev/mmcblk0: 16.0 GB, 16005464064 bytes
255 heads, 63 sectors/track, 1945 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 1 3 24066 6 FAT16
/dev/mmcblk0p2 4 122 955867+ 83 Linux
/dev/mmcblk0p3 384 1946 12553216 83 Linux
root@slitaz:~# parted -l
Model: SD SD16G (sd/mmc)
Disk /dev/mmcblk0: 16.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 32.3kB 24.7MB 24.6MB primary fat16
2 24.7MB 1003MB 979MB primary ext4
3 3151MB 16.0GB 12.9GB primary
2. rootfstype=ext4
root@slitaz:~# dmesg | grep mmcblk
[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=1680 bcm2708_fb.fbheight=1050 bcm2708.boardrev=0x2 bcm2708.serial=0x7b32f4ce smsc95xx.macaddr=B8:27:EB:32:F4:CE sdhci-bcm2708.emmc_clock_freq=100000000 vc_mem.mem_base=0xc000000 vc_mem.mem_size=0x10000000 dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait devtmpfs.mount=0
[ 1.492961] Waiting for root device /dev/mmcblk0p2...
[ 1.532386] mmcblk0: mmc0:0007 SD16G 14.9 GiB
[ 1.545521] mmcblk0: p1 p2 p3
[ 2.367369] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 4.105091] EXT4-fs (mmcblk0p2): re-mounted. Opts: user_xattr,acl,barrier=1,data=ordered
[ 4.253133] EXT4-fs (mmcblk0p2): re-mounted. Opts: user_xattr,acl,barrier=1,data=ordered
3. kernel command line setting
root@slitaz:~# cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait devtmpfs.mount=0
4. gparted : slitaz-4.0/cooking (x86)
Applications --> System Tools --> Gparted Partition Editor
/dev/sdXX
.