My SD card is 64GB, but only a part of the remaining space is not extended.
View disk usage
[the root @ localhost ~] DF # - H # Check current disk, only a portion of
the Filesystem Size Used Avail the Use% Mounted ON
/ dev / 1.4G 1.2G 211M 85% the root /
devtmpfs 1.9G 1.9G 0 0% / dev tmpfs 0% 0 2.0G 2.0G / dev / SHM tmpfs 17M 2.0G 1.9G. 1% / RUN tmpfs 2.0G 2.0G 0 0% / SYS / FS / a cgroup / dev / 18 is mmcblk0p1 286M 235M 52M% / Boot tmpfs 391M 391M 0 0% / run / user / 0
View the partition usage
[root@localhost ~]# fdisk -l
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 * 8192 593919 292864 c W95 FAT32 (LBA)
/dev/mmcblk0p2 593920 1593343 499712 82 Linux swap / Solaris
/dev/mmcblk0p3 1593344 4524031 1465344 83 Linux
Allocating disk using fdisk
[the root @ localhost ~] # the fdisk / dev / mmcblk0
available for purchase to the fdisk (util-Linux 2.23.2 ).
Changes in REMAIN Will only Memory, an until you Decide to Write Them.
of Be careful before the using The Write Command.
the Command (for m help): d # delete partition partition number (1-3, default 3) : 3 # 3 delete partitions, i.e., / dev / mmcblk0p3 the partition 3 IS deleted the Command (m for Help): n-# Create a new partition partition type: p primary (2 primary, Extended 0, 2 Free ) E Extended the Select (default P): P # Number create a primary partition the partition (3,4-, default. 3):. 3 # partition 3 First sector (2048-124735487, default 2048 ): 1,593,344 partition start sector # 3 is input, by fdisk - give commands l Last sector, + sectors or + size {K, M, G} (1593344-124735487, default 124735487): #最后一个扇区，默认即可 Using default value 124735487 Partition 3 of type Linux and of size 58.7 GiB is set Command (m for help): w #将上述操作写入分区表 The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) Syncing disks. [root@localhost ~]# reboot #操作完成需要重启
After the restart, query space has not changed, you need to enter the following command
[root@localhost ~]# sudo resize2fs /dev/mmcblk0p3 resize2fs 1.42.9 (28-Dec-2013) Filesystem at /dev/mmcblk0p3 is mounted on /; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 8 The filesystem on /dev/mmcblk0p3 is now 15392768 blocks long.
At this capacity has been extended
[root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/root 58G 1.2G 57G 2% / devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 2.0G 0 2.0G 0% /dev/shm tmpfs 2.0G 17M 1.9G 1% /run tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup /dev/mmcblk0p1 286M 52M 235M 18% /boot tmpfs 391M 0 391M 0% /run/user/0