Unmount all the SD card partitions, if mounted.
卸载所有的SD卡的分区，如果安装。
After finishing setting up both instances and checking that you can start and stop the instances, then unmount all directories and on HADB2 issue both.
完成两个实例的设置并检查可以启动和停止实例之后，就卸载所有目录，并在HADB2上发出。
By the way, if you modify, delete, or add any files to the "file system" of the tarball, all changes are saved to the original tarball when you unmount the FUSE file system.
顺便说一句，如果在tarball的“文件系统”中修改、删除或添加任何文件，那么当卸载fuse文件系统时所有修改会保存到原来的tarball中。
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