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barebox$ cp /mnt/tftp/[zImage] /mnt/emmc/zImage				
barebox$ cp /mnt/tftp/[oftree] /mnt/emmc/oftree

在linux中扩大eMMC文件系统

查看系统磁盘空间使用情况

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root@phyboard-mira-imx6-5:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root               298.0M    234.4M     43.8M  84% /
devtmpfs                871.0M         0    871.0M   0% /dev
tmpfs                  1005.2M         0   1005.2M   0% /dev/shm
tmpfs                  1005.2M      8.3M    996.9M   1% /run
tmpfs                  1005.2M         0   1005.2M   0% /sys/fs/cgroup
tmpfs                  1005.2M         0   1005.2M   0% /tmp
tmpfs                  1005.2M      4.0K   1005.2M   0% /var/volatile

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在linux中扩大eMMC/SD文件系统

首先检查目前的emmc/SD存储大小 使用以下命令操作

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root@phyboard-mira-imx6-5:~# parted -m /dev/mmcblk3 unit B print
BYT;
/dev/mmcblk3:7616856064B:sd/mmc:512:512:msdos:MMC Q2J55L:;
1:4194304B:12582911B:8388608B:::lba;
2:12582912B:343932927B:331350016B:ext4::;

从上面得知mmcblk3大小为7616856064B，注意不同的平台接法会导致mmcblk后面的数字变化，请检查后执行指令。

然后使用下面的指令将mmcblk3扩展到空间最后减1，也就是7616856063B

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root@phyboard-mira-imx6-5:~# parted /dev/mmcblk3 resizepart 2 7616856063B
Information: You may need to update /etc/fstab.

最后使用以下指令调整mmcblk3的第二分区mmcblk3p2占满新加的空间

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root@phyboard-mira-imx6-5:~# resize2fs /dev/mmcblk3p2
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/mmcblk3p2 is m[   94.850593] EXT4-fs (mmcblk3p2): resizing filesystem from 323584 to 7426048 blocks
ounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 29
[   95.055180] EXT4-fs (mmcblk3p2): resized filesystem to 7426048
[   95.133065] random: nonblocking pool is initialized
The filesystem on /dev/mmcblk3p2 is now 7426048 blocks long.

执行以上命令后便已经扩大文件系统了，再次查看系统磁盘空间使用情况再次查看系统磁盘空间使用情况

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root@phyboard-mira-imx6-5:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 6.9G    235.7M      6.3G   4% /
devtmpfs                871.0M         0    871.0M   0% /dev
tmpfs                  1005.2M         0   1005.2M   0% /dev/shm
tmpfs                  1005.2M      8.3M    996.9M   1% /run
tmpfs                  1005.2M         0   1005.2M   0% /sys/fs/cgroup
tmpfs                  1005.2M         0   1005.2M   0% /tmp
tmpfs                  1005.2M      4.0K   1005.2M   0% /var/volatile

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