一、全卡备份

1.win32DiskImager

新建空img文件

将TF卡插入电脑,可以看到有两个分区,What we want to back up isroot区而不是boot区

So the image file is selected1.img,设备选择G:

Then click Read again

2.SD Card Copier

将TF卡插入树莓派,可看到

Choose where to copy from and where to copy,点击start

等待复制完成

3.终端命令

查询路径

lsblk

备份命令

sudo dd if=/dev/mmcblk0 of=/dev/sda		#if：从哪复制 
										#of：复制到哪

sudo ps -ef | grep dd					#View the new terminal interfaceddCommand process number

sudo watch-n 3 kill_USR1 pid			#pid:查到的进程号
										#发送USR1(用户自定义信号),查看copy进度
										#结合watchcan be refreshed in real time 

二、rpi-backup压缩备份

备份的是boot区和rootThe used part of the area

1.Check the remaining space of the current system card

df -h

2.备份

（1）备份文件大小为：已用空间1.2
（2）If the remaining space is sufficient, it will be directly stored on the system card,If not enough, save to newSD卡上
（3）Backup to an external device if needed,The device must be mounted to/media,不要挂载到/mnt,Because the created image will be mounted to /mnt进行操作*****

git clone https://github.com/nanhantianyi/rpi-backup.git && cd rpi-backup
sudo bash back.sh xxx.img  (xxx.imgis the backup file name,自行修改)

3.扩容

Execute after the system is restored

sudo bash resize.sh 

扩容root分区,Raspberry Pi can also be usedraspi-config

sudo raspi-config

选择"Advanced Options"回车

然后选择"A1 Expand Filesystem Ensures that all of ….",回车

Ask to modifyroot分区,直接回车

to the first page,按"Tab"键,选择"Finish",回车

询问是否重启,选择重启

重启完后,输入"df -h",会发现rootThe partition has been expanded successfully

三、参考资料

1.https://blog.csdn.net/lzjsqn/article/details/72058293

2.4.14.114-OPENFANS+20190602-v8 64位debain系统 /usr/sbin/resize.root 脚本

3.https://www.bilibili.com/video/BV1fL411u71E?share_source=copy_web