Cubie Truck Lubuntu Desktop 硬碟分割
$ sudo fdisk -l
Disk /dev/nand: 15.9 GB, 15938355200 bytes
255 heads, 63 sectors/track, 1937 cylinders, total 31129600 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: 0x00000000
Disk /dev/nand doesn’t contain a valid partition table
Disk /dev/nanda: 67 MB, 67108864 bytes
255 heads, 63 sectors/track, 8 cylinders, total 131072 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: 0x00000000
Device Boot Start End Blocks Id System
Disk /dev/nandb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders, total 4194304 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: 0x00000000
Disk /dev/nandb doesn’t contain a valid partition table
Disk /dev/nandc: 13.7 GB, 13706985472 bytes
255 heads, 63 sectors/track, 1666 cylinders, total 26771456 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: 0xffffffff
Disk /dev/nandc doesn’t contain a valid partition table[@more@]/dev/nanda 是系統開機分割區
/dev/nandb 是 /root 分割區
/dev/nandc 是還沒使用的區域
參考網頁：
Cubietruck-Resize NAND | www.maruscha.org
cubieboard nand 重新分区扩容 – 我喜欢智能化 – 博客频道 – CSDN.NET
查看 Nand 硬碟分割表資訊
$ sudo nand-part -f a20 /dev/nand
check partition table copy 0: mbr: version 0x00000200, magic softw411
OK
check partition table copy 1: mbr: version 0x00000200, magic softw411
OK
check partition table copy 2: mbr: version 0x00000200, magic softw411
OK
check partition table copy 3: mbr: version 0x00000200, magic softw411
OK
mbr: version 0x00000200, magic softw411
3 partitions
partition 1: class = DISK, name = bootloader, partition start = 32768, partition size = 131072 user_type=0
partition 2: class = DISK, name = rootfs, partition start = 163840, partition size = 4194304 user_type=0
partition 3: class = DISK, name = UDISK, partition start = 4358144, partition size = 26574848 user_type=0
綠色是分割區的名字，粉紅色是分割區的起始位置，橘色是分割區的大小
以 root 分割為例
它的大小是 size =4194304 ; 4194304/1024/2=2048 = 2G
UDISK 是還未用到的區域，也就是 root 分割區要擴展的區域
如果要把全部的空間用完，root 分割區的大小 = 4194304 + 26574848 = 30769152
進行設定
$ sudo nand-part -f a20 /dev/nand 32768 ‘boot 131072’ ‘rootfs 30769152’
check partition table copy 0: mbr: version 0x00000200, magic softw411
OK
check partition table copy 1: mbr: version 0x00000200, magic softw411
OK
check partition table copy 2: mbr: version 0x00000200, magic softw411
OK
check partition table copy 3: mbr: version 0x00000200, magic softw411
OK
mbr: version 0x00000200, magic softw411
3 partitions
partition 1: class = DISK, name = bootloader, partition start = 32768, partition size = 131072 user_type=0
partition 2: class = DISK, name = rootfs, partition start = 163840, partition size = 4194304 user_type=0
partition 3: class = DISK, name = UDISK, partition start = 4358144, partition size = 26574848 user_type=0
check partition table copy 0: mbr: version 0x00000200, magic softw411
check partition table copy 1: mbr: version 0x00000200, magic softw411
check partition table copy 2: mbr: version 0x00000200, magic softw411
check partition table copy 3: mbr: version 0x00000200, magic softw411
ready to write new partition tables:
mbr: version 0x00000200, magic softw411
2 partitions
partition 1: class = DISK, name = boot, partition start = 32768, partition size = 131072 user_type=0
partition 2: class = DISK, name = rootfs, partition start = 163840, partition size = 30769152 user_type=0
write new partition tables? (Y/N)
y
Failed rereading partition table: Device or resource busy
verifying new partition tables:
check partition table copy 0: mbr: version 0x00000200, magic softw411
OK
check partition table copy 1: mbr: version 0x00000200, magic softw411
OK
check partition table copy 2: mbr: version 0x00000200, magic softw411
OK
check partition table copy 3: mbr: version 0x00000200, magic softw411
OK
mbr: version 0x00000200, magic softw411
2 partitions
partition 1: class = DISK, name = boot, partition start = 32768, partition size = 131072 user_type=0
partition 2: class = DISK, name = rootfs, partition start = 163840, partition size = 30769152 user_type=0
rereading partition table… returned -1
重新啟動電腦
$ sudo reboot
重新設定 /dev/nandb 分割區大小
$ sudo resize2fs /dev/nandb
resize2fs 1.42.5 (29-Jul-2012)
Filesystem at /dev/nandb is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 1
The filesystem on /dev/nandb is now 3870720 blocks long.
原本 /root 分割區的大小
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 2.0G 1020M 894M 54% /
devtmpfs 889M 4.0K 889M 1% /dev
tmpfs 20M 224K 20M 2% /tmp
none 197M 220K 197M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 985M 132K 985M 1% /run/shm
none 100M 12K 100M 1% /run/user
擴展 /root 分割區後的大小
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 15G 1021M 13G 8% /
devtmpfs 889M 4.0K 889M 1% /dev
tmpfs 20M 4.0K 20M 1% /tmp
none 197M 212K 197M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 985M 0 985M 0% /run/shm
none 100M 12K 100M 1% /run/user