本帖最后由 18185197810 于 2023-5-16 12:53 编辑
需求详细说明： 刷机固件或者解除系统磁盘保护命令（安卓9，晶晨s905l3a芯片，ram大小2G,eMMC 大小8G）
机顶盒已经打开ADB，且有root 权限。
通过：echo 1 > /sys/class/remount/need_remount;mount -o rw,remount /dev/block/system重新挂载写入权限的命令执行后，依然不可以对系统磁盘进行写入。
可以将系统磁盘文件拷贝（cp命令或者dd命令）到U盘或者到电脑（但是无法对机顶盒磁盘写入）。
求神级---帮助！
命令窗口如下：
p291_iptv:/ #
ys/class/remount/need_remount; mount -o remount,rw /system < # 给磁盘追加读写权限~
p291_iptv:/ # cd /system/app
p291_iptv:/system/app # mkdir 2222 # 新创建一个文件夹 名字叫2222
p291_iptv:/system/app # ls # 查看是否创建成功
2222 # 显示已经创建
AdbConsole
Bluetooth
CaptivePortalLogin
CertInstaller
CheckDataSize
CompanionDeviceManager
DDRTest
ExtShared
FactoryMode
FileBrowser
GZDX-IPTVEPG-sywebcore-ALL-DEBUG-1.0.0-20230307-1035ed.apk
GZDX-IPTVSettings-ALL-ALL-debug-1.0-20230224-1347.apk
HTMLViewer
IndexActivity.apk
KeyChain
LatinIME
MetroApplicationStore-release
MusicPlayer.apk
PacProcessor
PicturePlayer.apk
QM_Debug_3.3.3.00.113_20220324180000_android9.0_CTCsigned
SecureElement
SystemXiri_release-2.0.6.apk
UMAppList
UMTerminalService
Upgrade_Storage
iptv_guizhoutelecom_520101.291193.103.15_release.apk
mediaProcessorDemo
stb_2.3.2_release_2023010415.apk
p291_iptv:/system/app # cd 2222
p291_iptv:/system/app/2222 # cd ..
p291_iptv:/system/app # ls -l # 过了5秒重新查看，目录下面2222的文件夹消失了
total 70820
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 AdbConsole
drwxr-xr-x 4 root root 4096 2009-01-01 00:00 Bluetooth
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 CaptivePortalLogin
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 CertInstaller
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 CheckDataSize
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 CompanionDeviceManager
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 DDRTest
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 ExtShared
drwxr-xr-x 2 root root 4096 2009-01-01 00:00 FactoryMode
drwxr-xr-x 2 root root 4096 2009-01-01 00:00 FileBrowser
-rw-r--r-- 1 root root 34197091 2009-01-01 00:00 GZDX-IPTVEPG-sywebcore-ALL-DEBUG-1.0.0-20230307-1035ed.apk
-rw-r--r-- 1 root root 8122342 2009-01-01 00:00 GZDX-IPTVSettings-ALL-ALL-debug-1.0-20230224-1347.apk
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 HTMLViewer
-rw-r--r-- 1 root root 124231 2009-01-01 00:00 IndexActivity.apk
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 KeyChain
drwxr-xr-x 4 root root 4096 2009-01-01 00:00 LatinIME
drwxr-xr-x 4 root root 4096 2009-01-01 00:00 MetroApplicationStore-release
-rw-r--r-- 1 root root 6353107 2009-01-01 00:00 MusicPlayer.apk
drwxr-xr-x 4 root root 4096 2009-01-01 00:00 PacProcessor
-rw-r--r-- 1 root root 5406923 2009-01-01 00:00 PicturePlayer.apk
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 QM_Debug_3.3.3.00.113_20220324180000_android9.0_CTCsigned
drwxr-xr-x 3 root root 4096 2009-01-01 00:00 SecureElement
-rw-r--r-- 1 root root 99133 2009-01-01 00:00 SystemXiri_release-2.0.6.apk
drwxr-xr-x 2 root root 4096 2009-01-01 00:00 UMAppList
drwxr-xr-x 2 root root 4096 2009-01-01 00:00 UMTerminalService
drwxr-xr-x 2 root root 4096 2009-01-01 00:00 Upgrade_Storage
-rw-r--r-- 1 root root 15537955 2009-01-01 00:00 iptv_guizhoutelecom_520101.291193.103.15_release.apk
drwxr-xr-x 2 root root 4096 2009-01-01 00:00 mediaProcessorDemo
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