Linux CT Development Board to NAND partition, get 8G space

Df-h View Results:

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root@cubietruck:~# df-h FileSystem Size Used Avail use% mounted on /dev/root 2.0G 614M 1.3G 32%/ Devtmpfs 889M 4.0K 889M 1%/dev None 4.0K 0 4.0K 0%/sys/fs/cgroup Tmpfs 20M 0 20M 0%/tmp None 197M 148K 197M 1%/run None 5.0M 0 5.0M 0%/run/lock None 985M 0 985M 0%/run/shm None 100M 0 100M 0%/run/user

Fdisk-l View Results:

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disk/dev/nand:7700 MB, 7700742144 bytes 255 heads, Sectors/track, 936 cylinders, total 15040512 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk identifier:0x00000000 Disk/dev/nand doesn ' t contain a valid partition table disk/dev/nanda:67 MB, 67108864 bytes 255 heads, Sectors/track, 8 cylinders, total 131072 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk identifier:0x00000000 Device Boot Start End Blocks Id System disk/dev/nandb:2147 MB, 2147483648 bytes 255 heads, Sectors/track, 261 cylinders, total 4194304 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk identifier:0x00000000 Disk/dev/nandb doesn ' t contain a valid partition table disk/dev/nandc:5469 MB, 5469372416 bytes 255 heads, Sectors/track, 664 cylinders, total 10682368 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk IDENTIFIER:0XFFFFFFFF Disk/dev/nandc doesn ' t contain a valid partition table

Solution:
Nand-part NAND device start position ' partition name length ' partition Name 2 length 2 '

Running Nand-part directly will get the partition information:
Bootloader starting position 32768 length 131072
Rootfs starting position 163840 length 4194304
Udisk starting position 4358144 length 10584064

These numbers are in 512-byte units.

Where Rootfs is the system file partition, and Udisk is that 5G more, and our goal is to the 5G of space, merged into the Rootfs, recalculated a bit, get the command is:
Nand-part/dev/nand 32768 ' bootloader 131072 ' Rootfs 14778368 '

The meaning is to/dev/nand, the starting position and length of the bootloader must remain unchanged, otherwise the consequence is to brush the system. In this case, the starting position of the Rootfs is also the original position, the change is its length, 14778368. Capacity calculation is: 14778368*512/1024/1024=7216MB, that is, 7G, of course, because the front has bootloader partition, and bootloader before the empty piece, So nandb is naturally not getting the full 8G.
Command successfully executed, reboot, and then Resize2fs/dev/nandb succeeded.

Verify:

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root@cubietruck:~# df-h FileSystem Size Used Avail use% mounted on /dev/root 7.0G 614M 6.2G 9%/ Devtmpfs 889M 4.0K 889M 1%/dev None 4.0K 0 4.0K 0%/sys/fs/cgroup Tmpfs 20M 0 20M 0%/tmp None 197M 148K 197M 1%/run None 5.0M 0 5.0M 0%/run/lock None 985M 0 985M 0%/run/shm None 100M 0 100M 0%/run/user

You can see that the root directory has become 7 G.

Results of Fdisk-l:

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root@cubietruck:~# fdisk-l disk/dev/nand:7700 MB, 7700742144 bytes 255 heads, Sectors/track, 936 cylinders, total 15040512 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk identifier:0x00000000 Disk/dev/nand doesn ' t contain a valid partition table disk/dev/nanda:67 MB, 67108864 bytes 255 heads, Sectors/track, 8 cylinders, total 131072 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk identifier:0x00000000 Device Boot Start End Blocks Id System disk/dev/nandb:7616 MB, 7616856064 bytes 255 heads, Sectors/track, 926 cylinders, total 14876672 sectors Units = sectors of 1 * the bytes Sector size (logical/physical): bytes/512 bytes I/O size (minimum/optimal): bytes/512 bytes Disk identifier:0x00000000 Disk/dev/nandb doesn ' t contain a valid partition table

You can see that the/DEV/NANDB has also become 7616M.

Original from: blog.slogra.com