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I have a Chinese tablet Genesis GT 7320 Androd 4.1.2. It is rooted using kingo. I changed the vold.fstab file on the / etc partition system to vold.fstab.bkp. The table was locked and did not start anymore. Action or recovery mode by pressing the power and volume buttons above. I have access installed on the macbook and access to the tablet through the adb shell. After running commands with busybox. I'm a layman and I took time to discover the adb and busybox commands. However, I can't access a / etc partition system to rename the vold.fstab.bkp file to simply vold.fstab. I saw on the internet that you need to mount a system partition. I tried several commands I found on the internet, but I didn't get results. Below are some of the directories I have access with adb shell. Can someone help me?

busybox ls

cache init.rc sbin charger mnt sys data proc system default.prop res tmp dev rk29-ipp.ko ueventd.goldfish.rc etc rk29-ipp.ko.3.0.36+ ueventd.rc init rk30xxnand_ko.ko.3.0.36+ ueventd.rk30board.rc init.bootmode.emmc.rc rk30xxnand_ko.ko.3.0.8+ init.bootmode.unknown.rc root

busybox ls /dev/block

loop0 loop5 mmcblk0p2 mtdblock10 mtdblock6 loop1 loop6 mmcblk0p3 mtdblock2 mtdblock7 loop2 loop7 mtd mtdblock3 mtdblock8 loop3 mmcblk0 mtdblock0 mtdblock4 mtdblock9 loop4 mmcblk0p1 mtdblock1 mtdblock5 platform

busybox ls /sys/block

loop0 loop4 mmcblk0 mtdblock2 mtdblock6 loop1 loop5 mtdblock0 mtdblock3 mtdblock7 loop2 loop6 mtdblock1 mtdblock4 mtdblock8 loop3 loop7 mtdblock10 mtdblock5 mtdblock9

José Roberto Gomes de Alencar
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  • mount -w /system then rm /system/etc/vold.fstab and mv /system/etc/vold.fstab.bkp vold.fstab (with busybox prefix maybe) https://www.wikipedia.org/wiki/List_of_GNU_Core_Utilities_commands (please also read Related questions on the right) http://man7.org/linux/man-pages/man8/mount.8.html – alecxs May 06 '20 at 22:34
  • The system showed the following message when I used busybox mount -w / system: mount: cannot read / etc / fstab: No such file or directory – José Roberto Gomes de Alencar May 07 '20 at 00:01
  • which recovery do you have? check /system is already mounted with mount or df and remount it writeable mount -o rw,remount /system or find /dev/block -name system and mount -w <partition> /system – alecxs May 07 '20 at 08:10
  • I used the guidance, but the system issued the following messages when I typed the commands below:

    busybox mount -o rw, remount /system

    mount: mounting remount on /system failed: No such file or directory

    busybox ls /dev/block

    loop0 loop1 loop2 loop3 loop4 loop5 loop6 loop7 mmcblk0 mmcblk0p1 mmcblk0p2 mmcblk0p3 mtd mtdblock0 mtdblock1 mtdblock10 mtdblock2 mtdblock3 mtdblock4 mtdblock5 mtdblock6 mtdblock7 mtdblock8 mtdblock9 platform

     – José Roberto Gomes de Alencar May 07 '20 at 17:28
  • Hello, is android system recovery version v4.2.41 – José Roberto Gomes de Alencar May 07 '20 at 23:50
  • I typed the command busybox find / dev / block -name system and the system issued the following message: /dev/block/mtd/by-name/system – José Roberto Gomes de Alencar May 08 '20 at 14:58
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    Congratulations!!! It worked!! Thank you very much for your help. – José Roberto Gomes de Alencar May 08 '20 at 16:25

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