shell - rooted android device freezes when writing to /system -


i try replace build.prop in system partition of android device , fezzes. have rooted samsung tablet sm-t850 twrp_3.1.0-1_sm-t825_5417 , sr3-supersu-v2.82-sr3-20170813133244

the commands have used :

gts3llte:/system # mount -o rw,remount /system  gts3llte:/ # mount -v | grep system  /dev/block/mmcblk0p44 on /system type ext4 (rw,seclabel,nosuid,noatime,norecovery) gts3llte:/system # dd if=/sdcard/build.prop of=/system/build.prop  frezzes!

device details:

  • galaxy tab s3 (sm t825)
  • android 7 linux version 3.18.31-11628211
  • su version 2.82 tried 2.79

other symptoms:

  • same happens mv , cp

  • i can create files in /system

  • i can append text /system/ build.prop

  • if reboot tablet new files gone

  • i have tried busybox’s mount , dd having same results

any ideas on whats wrong? many thanks!


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