Disable auto-root on Apolo JB kernel - Galaxy S II Q&A, Help & Troubleshooting
For those of you who are using the Apolo JB kernel, any idea how do you disable the auto-root?
It keeps installing SuperSU after restart although I wish to use CWM SuperUser.
For anyone who knows, please do share. Thanks.
desean said:
For those of you who are using the Apolo JB kernel, any idea how do you disable the auto-root?
It keeps installing SuperSU after restart although I wish to use CWM SuperUser.
For anyone who knows, please do share. Thanks.
Click to expand...
Click to collapse
Install once, start the device and uninstall supersu and then install superuser.
It shouldn't change it after rebooting.
If it doesn't work please let me know and send me "/data/user.log"
pedestre said:
Install once, start the device and uninstall supersu and then install superuser.
It shouldn't change it after rebooting.
If it doesn't work please let me know and send me "/data/user.log"
Click to expand...
Click to collapse
Hi @pedestre,
My CWM SU will be removed and SuperSU reinstalled each time I reboot my phone. Currently on 4.6 Light TWRP. Here are my logs:
user.log.bak
Code:
Wed May 22 21:45:07 SGT 2013 START of post-init.sh
grep: /system/etc/tweaks.conf: No such file or directory
/sbin/post-init.sh: line 30: //Cargar: not found
mount: mounting none on /acct failed: Device or resource busy
mount: mounting none on /dev/cpuctl failed: Device or resource busy
/sbin/post-init.sh: line 73: can't create /sys/kernel/debug/sched_features: Permission denied
Extraer payload
1540+0 records in
1540+0 records out
788480 bytes (770.0KB) copied, 0.106428 seconds, 7.1MB/s
rm: can't remove '/data/app/Superuser.apk': No such file or directory
rm: can't remove '/system/app/Supersu.apk': No such file or directory
rm: can't remove '/data/app/Supersu.apk': No such file or directory
rm: can't remove '/system/app/*supersu*': No such file or directory
rm: can't remove '/data/app/*supersu*': No such file or directory
Copiando las liblights
mkdir: can't create directory '/system/Apolo': File exists
Wed May 22 21:45:09 SGT 2013 PRE-INIT DONE of post-init.sh
Wed May 22 21:45:21 SGT 2013 Default Value 50
Wed May 22 21:45:21 SGT 2013 No .enable_crt so 50 is default value for fb_pause
Wed May 22 21:45:21 SGT 2013 USER EARLY INIT START from /system/etc/init.d
Wed May 22 21:45:21 SGT 2013 USER EARLY INIT DONE from /system/etc/init.d
Wed May 22 21:45:21 SGT 2013 USER EARLY INIT START from /data/init.d
Wed May 22 21:45:21 SGT 2013 USER EARLY INIT DONE from /data/init.d
Wed May 22 21:45:21 SGT 2013 USER INIT START from /system/etc/init.d
START 'S999pegasusqsio'
EXIT 'S999pegasusqsio' (0)
Wed May 22 21:45:52 SGT 2013 USER INIT DONE from /system/etc/init.d
Wed May 22 21:45:52 SGT 2013 USER INIT START from /data/init.d
Wed May 22 21:45:52 SGT 2013 USER INIT DONE from /data/init.d
Wed May 22 21:45:52 SGT 2013 END of post-init.sh
user.log
Code:
Wed May 22 21:51:34 SGT 2013 START of post-init.sh
grep: /system/etc/tweaks.conf: No such file or directory
/sbin/post-init.sh: line 30: //Cargar: not found
mount: mounting none on /acct failed: Device or resource busy
mount: mounting none on /dev/cpuctl failed: Device or resource busy
/sbin/post-init.sh: line 73: can't create /sys/kernel/debug/sched_features: Permission denied
Extraer payload
1540+0 records in
1540+0 records out
788480 bytes (770.0KB) copied, 0.090707 seconds, 8.3MB/s
rm: can't remove '/system/app/Superuser.apk': No such file or directory
rm: can't remove '/data/app/Superuser.apk': No such file or directory
rm: can't remove '/system/app/Supersu.apk': No such file or directory
rm: can't remove '/data/app/Supersu.apk': No such file or directory
rm: can't remove '/system/app/*supersu*': No such file or directory
rm: can't remove '/data/app/*supersu*': No such file or directory
Copiando las liblights
mkdir: can't create directory '/system/Apolo': File exists
Wed May 22 21:51:37 SGT 2013 PRE-INIT DONE of post-init.sh
Wed May 22 21:51:49 SGT 2013 Default Value 50
Wed May 22 21:51:49 SGT 2013 No .enable_crt so 50 is default value for fb_pause
Wed May 22 21:51:49 SGT 2013 USER EARLY INIT START from /system/etc/init.d
Wed May 22 21:51:49 SGT 2013 USER EARLY INIT DONE from /system/etc/init.d
Wed May 22 21:51:49 SGT 2013 USER EARLY INIT START from /data/init.d
Wed May 22 21:51:49 SGT 2013 USER EARLY INIT DONE from /data/init.d
Wed May 22 21:51:49 SGT 2013 USER INIT START from /system/etc/init.d
START 'S999pegasusqsio'
EXIT 'S999pegasusqsio' (0)
Wed May 22 21:52:19 SGT 2013 USER INIT DONE from /system/etc/init.d
Wed May 22 21:52:19 SGT 2013 USER INIT START from /data/init.d
Wed May 22 21:52:19 SGT 2013 USER INIT DONE from /data/init.d
Wed May 22 21:52:19 SGT 2013 END of post-init.sh
S999pegasusqsio in the log is my own init script which contains this:
Code:
#!/sbin/busybox sh
sleep 30
# governor and io scheduler
echo "pegasusq" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo "sio" > /sys/block/mmcblk0/queue/scheduler
# pegasusq tweaks
# Pegasusq settings from http://forum.xda-developers.com/showpost.php?p=26488751&postcount=425
echo "90" > /sys/devices/system/cpu/cpufreq/pegasusq/up_threshold
echo "95" > /sys/devices/system/cpu/cpufreq/pegasusq/up_threshold_at_min_freq
echo "40000" > /sys/devices/system/cpu/cpufreq/pegasusq/sampling_rate
echo "2" > /sys/devices/system/cpu/cpufreq/pegasusq/sampling_down_factor
echo "5" > /sys/devices/system/cpu/cpufreq/pegasusq/down_differential
echo "30" > /sys/devices/system/cpu/cpufreq/pegasusq/freq_step
echo "100000" > /sys/devices/system/cpu/cpufreq/pegasusq/freq_for_responsiveness
echo "10" > /sys/devices/system/cpu/cpufreq/pegasusq/cpu_up_rate
echo "20" > /sys/devices/system/cpu/cpufreq/pegasusq/cpu_down_rate
echo "400000" > /sys/devices/system/cpu/cpufreq/pegasusq/hotplug_freq_1_1
echo "200000" > /sys/devices/system/cpu/cpufreq/pegasusq/hotplug_freq_2_0
echo "350" > /sys/devices/system/cpu/cpufreq/pegasusq/hotplug_rq_1_1
echo "200" > /sys/devices/system/cpu/cpufreq/pegasusq/hotplug_rq_2_0
echo "0" > /sys/devices/system/cpu/cpufreq/pegasusq/ignore_nice_load
echo "1" > /sys/devices/system/cpu/cpufreq/pegasusq/io_is_busy
echo "0" > /sys/devices/system/cpu/cpufreq/pegasusq/max_cpu_lock
echo "0" > /sys/devices/system/cpu/cpufreq/pegasusq/hotplug_lock
# Apolo extra setting
echo 1 > /sys/class/misc/notification/notification_enabled
echo 1 > /sys/class/misc/notification/blnww
echo 0 > /sys/class/misc/notification/breathing
echo 0 > /sys/class/misc/notification/notification_timeout
echo 0 > /sys/devices/virtual/sec/sec_touchkey/force_disable
echo 0 > /sys/class/misc/notification/led_timeout_ms
echo 2800 > /sys/devices/virtual/sec/sec_touchkey/touchkey_brightness
echo 0 > /sys/devices/virtual/sec/sec_touchscreen/tsp_slide2wake
#AWAKE_MIN="200000"
#AWAKE_MAX="1000000"
#scaling cpu freqs
#echo $AWAKE_MIN > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
#echo $AWAKE_MAX > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
# UV
#echo "1275 1175 1075 975 950 " > /sys/devices/system/cpu/cpu0/cpufreq/UV_mV_table
Thanks for checking.
desean said:
For those of you who are using the Apolo JB kernel, any idea how do you disable the auto-root?
It keeps installing SuperSU after restart although I wish to use CWM SuperUser.
For anyone who knows, please do share. Thanks.
Click to expand...
Click to collapse
there is some issue with CWM version of Appolo v4.6 for now and u might expect a modified version of the same soon, while the TWRP one is wrk'ng fine
Sun90 said:
there is some issue with CWM version of Appolo v4.6 for now and u might expect a modified version of the same soon, while the TWRP one is wrk'ng fine
Click to expand...
Click to collapse
Hi, I am actually currently on 4.6 light TWRP
desean said:
Hi, I am actually currently on 4.6 light TWRP
Click to expand...
Click to collapse
ok, try this :
create a file in /system/Apolo named Desde_4-6 so you'll have /system/Apolo/Desde_4-6
for some reason the initial scripts are not working fine in TWRP version.
I'm going to review the scripts
Edit: you can redownload Apolo 4.6. I have corrected the mistake. Please tell me if it works now
pedestre said:
ok, try this :
create a file in /system/Apolo named Desde_4-6 so you'll have /system/Apolo/Desde_4-6
for some reason the initial scripts are not working fine in TWRP version.
I'm going to review the scripts
Edit: you can redownload Apolo 4.6. I have corrected the mistake. Please tell me if it works now
Click to expand...
Click to collapse
I have a /system/Apolo/Desde_4-, so I renamed it to Desde_4-6. On reboot, CWM SU still remains so this appears to be the issue.
To test your new build #108, I removed /system/Apolo/Desde_4-6 and reflash the new kernel build. The Desde_4-6 is created correctly now and CWM SU remains.
Below is the user.log after rebooting after install the new build 108
Code:
Thu May 23 08:56:00 SGT 2013 START of post-init.sh
grep: /system/etc/tweaks.conf: No such file or directory
/sbin/post-init.sh: line 30: //Cargar: not found
mount: mounting none on /acct failed: Device or resource busy
mount: mounting none on /dev/cpuctl failed: Device or resource busy
/sbin/post-init.sh: line 73: can't create /sys/kernel/debug/sched_features: Permission denied
Nada que hacer, tenemos todo listo
Thu May 23 08:56:01 SGT 2013 PRE-INIT DONE of post-init.sh
Thu May 23 08:56:13 SGT 2013 Default Value 50
Thu May 23 08:56:13 SGT 2013 No .enable_crt so 50 is default value for fb_pause
Thu May 23 08:56:13 SGT 2013 USER EARLY INIT START from /system/etc/init.d
Thu May 23 08:56:13 SGT 2013 USER EARLY INIT DONE from /system/etc/init.d
Thu May 23 08:56:13 SGT 2013 USER EARLY INIT START from /data/init.d
Thu May 23 08:56:13 SGT 2013 USER EARLY INIT DONE from /data/init.d
Thu May 23 08:56:13 SGT 2013 USER INIT START from /system/etc/init.d
START 'S999pegasusqsio'
EXIT 'S999pegasusqsio' (0)
Thu May 23 08:56:44 SGT 2013 USER INIT DONE from /system/etc/init.d
Thu May 23 08:56:44 SGT 2013 USER INIT START from /data/init.d
Thu May 23 08:56:44 SGT 2013 USER INIT DONE from /data/init.d
Thu May 23 08:56:44 SGT 2013 END of post-init.sh
Thanks for your fix. :good::laugh:
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So what does "busybox date" claims the year is? "ls" only outputs the year when it's significant, e.g. not the current.
kuisma said: So what does "busybox date" claims the year is? "ls" only outputs the year when it's significant, e.g. not the current. Click to expand... Click to collapse [email protected]:/ # busybox date busybox date Wed Aug 22 02:38:38 PDT 2012 [email protected]:/ # busybox ls -al /data/data/com.adobe.reader/lib busybox ls -al /data/data/com.adobe.reader/lib drwxr-xr-x 2 system system 4096 Aug 20 21:50 . drwxr-xr-x 5 app_31 app_31 4096 Aug 20 21:51 .. -rwxr-xr-x 1 system system 3931800 Aug 25 2012 libAdobeReader.so "Busybox date" reports the date and time correctly. Ran the ls command right after the date command and it still shows the file with a year and a wrong date? I've tried uninstalling Adobe Reader, clearing cache and Dalvik cache, reinstalling Adobe Reader, still has same incorrect date.
Anybody have any ideas on this? Please. :banghead:
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theteju said: after running the above command I noticed a file in my home folder (laptop) named logcat.txt but the file contains only this "Unable to open log device '/dev/log/main': No such file or directory" Click to expand... Click to collapse That looks like a problem on the ROM. Either a misconfigured kernel or the ROM not setting up the log devices correctly. What's the output of this command on the device? Code: $ [B]ls -l /dev/log[/B]
crw-rw-rw- root log 10, 47 2013-01-29 11:10 events crw-rw-rw- root log 10, 46 2013-01-29 11:10 radio crw-rw-rw- root log 10, 45 2013-01-29 11:10 system thats the output on my tablet running the command you mentioned.
theteju said: crw-rw-rw- root log 10, 47 2013-01-29 11:10 events crw-rw-rw- root log 10, 46 2013-01-29 11:10 radio crw-rw-rw- root log 10, 45 2013-01-29 11:10 system Click to expand... Click to collapse And there you have it. The main device is non-existent--as the error message stated. Plus, the major and minor device numbers seem wrong. What's the output of this command? Code: $ [B]su[/B] # [B]strings /init | fgrep log/[/B] /dev/log/ /dev/log/main /dev/log/radio
same as yours. /dev/log/ /dev/log/main /dev/log/radio
so what is going on with my system? Am I looking at clean flash?
theteju said: same as yours. /dev/log/ /dev/log/main /dev/log/radio Click to expand... Click to collapse Next: Reboot the device and post the output of this command: Code: $ [B]dmesg | fgrep logger[/B] [ 13.343038] logger: created 64K log 'log_main' [ 13.343216] logger: created 256K log 'log_events' [ 13.343395] logger: created 64K log 'log_radio' [ 13.343574] logger: created 64K log 'log_system'
[email protected]:/ $ su [email protected]:/ # dmesg | fgrep logger <6>[ 1.969399] logger: created 256K log 'log_main' <6>[ 1.969608] logger: created 256K log 'log_events' <6>[ 1.969750] logger: created 256K log 'log_radio' <6>[ 1.969899] logger: created 256K log 'log_system' [email protected]:/ #
sorry I am being impatient. and Thanks for your prompt replies..I understand its too late @ your end now.
theteju said: I understand its too late @ your end now. Click to expand... Click to collapse Well, I *was* a bit sleepy, but, now that you've tossed this bizarre problem onto my lap, I'm feeling decidedly perky. Next: Code: $ su # [B]ls -l /sys/class/misc/ /sys/devices/virtual/misc/ | fgrep log_[/B] lrwxrwxrwx 1 root root 0 Jan 29 23:45 log_events -> ../../devices/virtual/misc/log_events lrwxrwxrwx 1 root root 0 Jan 29 23:45 log_main -> ../../devices/virtual/misc/log_main lrwxrwxrwx 1 root root 0 Jan 29 23:45 log_radio -> ../../devices/virtual/misc/log_radio lrwxrwxrwx 1 root root 0 Jan 29 23:45 log_system -> ../../devices/virtual/misc/log_system drwxr-xr-x 3 root root 0 Jan 29 23:45 log_events drwxr-xr-x 3 root root 0 Jan 29 23:45 log_main drwxr-xr-x 3 root root 0 Jan 29 23:45 log_radio drwxr-xr-x 3 root root 0 Jan 29 23:45 log_system Also repeat the "ls -l /dev/log" command in post #2.
/devices/virtual/misc/ | fgrep log_ < lrwxrwxrwx root root 2013-01-29 13:52 log_events -> ../../devices/virtual/misc/log_events lrwxrwxrwx root root 2013-01-29 13:52 log_main -> ../../devices/virtual/misc/log_main lrwxrwxrwx root root 2013-01-29 13:52 log_radio -> ../../devices/virtual/misc/log_radio lrwxrwxrwx root root 2013-01-29 13:52 log_system -> ../../devices/virtual/misc/log_system drwxr-xr-x root root 2013-01-29 13:52 log_events drwxr-xr-x root root 2013-01-29 13:52 log_main drwxr-xr-x root root 2013-01-29 13:52 log_radio drwxr-xr-x root root 2013-01-29 13:52 log_system [email protected]:/ # Sent from my Malata SMBA1002 using xda app-developers app
[email protected]:/ # ls -l /dev/log crw-rw-rw- root log 10, 47 2013-01-29 13:12 events crw-rw-rw- root log 10, 46 2013-01-29 13:12 radio crw-rw-rw- root log 10, 45 2013-01-29 13:12 system [email protected]:/ # Sent from my Malata SMBA1002 using xda app-developers app
theteju said: [email protected]:/ # ls -l /dev/log crw-rw-rw- root log 10, 47 2013-01-29 13:12 events crw-rw-rw- root log 10, 46 2013-01-29 13:12 radio crw-rw-rw- root log 10, 45 2013-01-29 13:12 system [email protected]:/ # Click to expand... Click to collapse You did reboot the device like I asked you to, right? Next: Code: $ [B]su[/B] # [B]for f in /sys/class/misc/log_*/dev[/B] > [B]do[/B] [B]echo $f: $(cat $f)[/B] > [B]done[/B] /sys/class/misc/log_events/dev: 10:46 /sys/class/misc/log_main/dev: 10:47 /sys/class/misc/log_radio/dev: 10:45 /sys/class/misc/log_system/dev: 10:44
Yes I did reboot. [email protected]:/ # for f /sys/class/misc//log_*/dev sh: syntax error: '/sys/class/misc//log_*/dev' unexpected [email protected]:/ # echo $f: $(cat $f) done The terminal is stuck with last command. Sent from my Malata SMBA1002 using xda app-developers app
I think I am doing something really stupid. Please make the commands in bold only.
The commands are in bold. You've missed out the `in' and 'do' keywords. Close the Term window and retype. You should also be able to use adb: "adb logcat" doesn't work, however, "adb shell" should.
[email protected]:/ $ su [email protected]:/ # for f in /sys/class/misc/log_*/dev > do echo $f: $(cat $f) > done /sys/class/misc/log_events/dev: 10:47 /sys/class/misc/log_main/dev: 10:48 /sys/class/misc/log_radio/dev: 10:46 /sys/class/misc/log_system/dev: 10:45 [email protected]:/ #
rajeevvp said: The commands are in bold. You've missed out the `in' and 'do' keywords. Close the Term window and retype. You should also be able to use adb: "adb logcat" doesn't work, however, "adb shell" should. Click to expand... Click to collapse Does android SDK has to run on background on laptop to use adb?
cool I am in adb shell, makes life more easy..
Next: Code: $ [B]su[/B] # [B]cat /sys/class/misc/log_*/uevent [/B]MAJOR=10 MINOR=46 DEVNAME=log_events MAJOR=10 MINOR=47 DEVNAME=log_main MAJOR=10 MINOR=45 DEVNAME=log_radio MAJOR=10 MINOR=44 DEVNAME=log_system ---------- Post added at 01:18 AM ---------- Previous post was at 01:16 AM ---------- theteju said: Does android SDK has to run on background on laptop to use adb? Click to expand... Click to collapse On Linux, you only need the adb binary to run adb commands. You don't need the entire Android SDK.
[Q] rm / chmod / chown -> "Operation not permitted" in recovery
Hello, I can't delete some files on my device (Samsung Galaxy Note 2 LTE [t0lte]]) running CyanogenMod 10.1 using RootExplorer (or similar file manager). So I tried with adb (in CM10.1, ClockworkMod & TeamWin recovery), but received error messages: Code: /data/media/0/DCIM/.thumbnails # rm 1375815201990.jpg rm: can't remove '1375815201990.jpg': Operation not permitted /data/media/0/DCIM/.thumbnails # chmod 777 1375815201990.jpg chmod: 1375815201990.jpg: Operation not permitted /data/media/0/DCIM/.thumbnails # chown root:root 1375815201990.jpg chown: 1375815201990.jpg: Operation not permitted I think there is something wrong with the permissions, here are the directory listings: Code: /data/data/com.amazon.venezia.wech/app_resources/configurationTwo/assets/css/amazon-phoenix/compositions # ls -lisah 202883 4 drwx------ 2 u0_a145 u0_a145 4.0K Aug 14 20:03 . 202882 4 drwx------ 3 u0_a145 u0_a145 4.0K Aug 8 03:43 .. 203719 24 ---S-wxr-t 1 u0_a1355 u0_a2315 1.8G Oct 11 2024 amazon-phoenix-xlarge-landscape-xhdpi.css Code: /data/lost+found # ls -lisah 10333 4 --wsrwSr-x 1 u22097_a u4253_a5 12.0K Jan 27 1988 #10333 10436 4 -r-------T 1 u22097_a u12935_a 254.5M May 14 1984 #10436 104567 8 ----r-Srwx 1 u37071_a u21823_a 36.0K Mar 5 1951 #104567 104571 36 d-w-rws--T 2 u18849_a u29364_a 36.0K Jan 10 1956 #104571 104687 8 ---S--x-w- 1 u38084_a u38537_a 28.0K Feb 16 1986 #104687 104696 8 --w--wsrwT 1 u8912_a4 u20250_a 36.0K Jun 12 1929 #104696 104832 36 d---r-sr-T 2 u8902_a5 u4062_a1 36.0K Sep 23 1929 #104832 ...and_many_more... Code: /data/media/0/DCIM/.thumbnails # ls -lisah 243488 156 drwxrwxrwx 2 media_rw media_rw 152.0K Aug 15 11:29 . 97358 4 drwxrwxrwx 3 media_rw media_rw 4.0K Aug 16 08:32 .. 248825 32 -r---ws-wx 1 all_a153 u0_a2320 712.5M Aug 19 1994 1375815201990.jpg BTW: /data/media/0 is the internal sd-card of my device. How can I delete theses files?
all files gone, have to rebuild my phone Stiegi said: How can I delete theses files? Click to expand... Click to collapse I didn't find a smart way (no "xattr", or "chflags", ... on android available) to clean the files off from my disk, so I rebuild my phone: copied all files from /data/media/0/ to my linux, wiped all local partitions (ecxept my external sdcard) in TWRP (but the bad files are still there) found another menu in TWRP and formated the /data/... (now the unusable files & folders are gone. I think the /data-wipe in TWRP uses "rm -fR *" on /data.) installed the latest CM10.1 + gapps, booted the phone, google restored my apps, TitaniumBackup restored the appdata, and finally I copied the files from my linux back to /data/media/0/ So after a day of extreme backup-/restore-/delete-/copy-ing I'm back on the track
[Q] Strange behavior with ext4 mount (root can see but apps cannot)
Hi all, I'm just hacking at my rk3188 box, and trying to get XBMC to read my ext4 external hard drive. However when the hard drive is mounted, XBMC only sees an empty directory! Also, in the terminal, "su'ing" as an app user, the directory appears empty also. This worked perfectly with android 4.2, 4.4 seems be more troublesome. Code: [email protected]_872xu:/ # ls -ailrt /mnt/usb_storage/usb/ 3222 dr-xr-xr-x 3 media 1023 60 Sep 9 11:32 .. 10959 -rw-rw-rw- 1 root root 0 Sep 9 11:35 testing 8841 drwxrwxrwx 2 media root 60 Sep 9 14:18 . [email protected]_872xu:/ # mount -t ext4 /dev/block/sda1 /mnt/usb_storage/usb [email protected]_872xu:/ # ls -l /mnt/usb_storage/usb/backup/ -rwxrwxr-x 1 root root 2147483648 Sep 9 11:20 arch.img drwxrwxrwx 2 root root 4096 Sep 7 17:30 init.d [email protected]_872xu:/ # su - app_65 [email protected]_872xu:/ $ ls -l /mnt/usb_storage/usb/backup/ /mnt/usb_storage/usb/backup/: No such file or directory 1|[email protected]_872xu:/ $ ls -l /mnt/usb_storage/usb -rw-rw-rw- root root 0 2014-09-09 11:35 testing
dmarkey said: Hi all, I'm just hacking at my rk3188 box, and trying to get XBMC to read my ext4 external hard drive. However when the hard drive is mounted, XBMC only sees an empty directory! Also, in the terminal, "su'ing" as an app user, the directory appears empty also. This worked perfectly with android 4.2, 4.4 seems be more troublesome. Code: [email protected]_872xu:/ # ls -ailrt /mnt/usb_storage/usb/ 3222 dr-xr-xr-x 3 media 1023 60 Sep 9 11:32 .. 10959 -rw-rw-rw- 1 root root 0 Sep 9 11:35 testing 8841 drwxrwxrwx 2 media root 60 Sep 9 14:18 . [email protected]_872xu:/ # mount -t ext4 /dev/block/sda1 /mnt/usb_storage/usb [email protected]_872xu:/ # ls -l /mnt/usb_storage/usb/backup/ -rwxrwxr-x 1 root root 2147483648 Sep 9 11:20 arch.img drwxrwxrwx 2 root root 4096 Sep 7 17:30 init.d [email protected]_872xu:/ # su - app_65 [email protected]_872xu:/ $ ls -l /mnt/usb_storage/usb/backup/ /mnt/usb_storage/usb/backup/: No such file or directory 1|[email protected]_872xu:/ $ ls -l /mnt/usb_storage/usb -rw-rw-rw- root root 0 2014-09-09 11:35 testing Click to expand... Click to collapse No ideas?