[Q] making bootable usb with dd command - Android Q&A, Help & Troubleshooting

What i'm trying to do is making an ubuntu bootable USB using the terminal:
DD if=/mnt/sdcard/ubuntu.ISO of=/mnt/USB_storage/
When i do that the terminal says : "cannot open for write: is a directory"
what is the solution please?
You may wonder why am i doing this? believe me i have a reason i'm not just playing, i really need to do that
Thank you for your help.

Related

[Q] adb push HELP

Lil' Help... New stock SGS2 phone arrived today... I successfully flashed Entropy512's "stock kernel + rooted stock system image" via Odin3 (v1.85). Worked perfect, phone rebooted, now I have root. 2nd step, I extracted the zImage from Codeworkx's CWM tar file (put zImage in same PC desktop folder as my adb.exe files). I want to use adb push to push zImage file to phone so I can avoid the triangle/counter of death. Anyway, I got this error in my CMD window:
C:\Android\android-sdk-windows\platform-tools>adb push zImage /sdcard/zImage
error: device not found
What went wrong? The "phone" and "card" are recognized by windows explorer, but when trying to use adb commands, get "error: device not found"
Thx.
DoctorQMM said:
Lil' Help... New stock SGS2 phone arrived today... I successfully flashed Entropy512's "stock kernel + rooted stock system image" via Odin3 (v1.85). Worked perfect, phone rebooted, now I have root. 2nd step, I extracted the zImage from Codeworkx's CWM tar file (put zImage in same PC desktop folder as my adb.exe files). I want to use adb push to push zImage file to phone so I can avoid the triangle/counter of death. Anyway, I got this error in my CMD window:
C:\Android\android-sdk-windows\platform-tools>adb push zImage /sdcard/zImage
error: device not found
What went wrong? The "phone" and "card" are recognized by windows explorer, but when trying to use adb commands, get "error: device not found"
Thx.
Click to expand...
Click to collapse
Try to start by verifying that adb can see your phone.
type "adb devices" (no quotes)
This should return a number, if not, the phone is not being seen by adb.
If not check drivers, cable, try different usb port.
If it does return a number you are properly connected.
Proceed to:
adb push zImage /sdcard/zImage
adb shell dd if=/sdcard/zImage of=/dev/block/mmcblk0p5
Might need to as su if prompt shows $ instead of #
Try adb remount
i didnt realize so many people cared about a little triangle that you see for about 3 seconds on boot.
DoctorQMM said:
Lil' Help... New stock SGS2 phone arrived today... I successfully flashed Entropy512's "stock kernel + rooted stock system image" via Odin3 (v1.85). Worked perfect, phone rebooted, now I have root. 2nd step, I extracted the zImage from Codeworkx's CWM tar file (put zImage in same PC desktop folder as my adb.exe files). I want to use adb push to push zImage file to phone so I can avoid the triangle/counter of death. Anyway, I got this error in my CMD window:
C:\Android\android-sdk-windows\platform-tools>adb push zImage /sdcard/zImage
error: device not found
What went wrong? The "phone" and "card" are recognized by windows explorer, but when trying to use adb commands, get "error: device not found"
Thx.
Click to expand...
Click to collapse
You're missing drivers or haven't enabled USB debugging. Drivers for USB Mass Storage are built into Windows, drivers for ADB are not. Not sure what the procedure is for installing Windows ADB drivers... It's one of the reasons I almost never use Windows for working with my phone.
I've heard Droid Explorer might come with a drivers package, not sure.
Entropy512 said:
You're missing drivers or haven't enabled USB debugging. Drivers for USB Mass Storage are built into Windows, drivers for ADB are not. Not sure what the procedure is for installing Windows ADB drivers... It's one of the reasons I almost never use Windows for working with my phone.
I've heard Droid Explorer might come with a drivers package, not sure.
Click to expand...
Click to collapse
PDANET is free and simple to install on any Windows based machine. Less than 30 seconds and it recognises every phone I have tried so far. You just need to be sure to get the right one for you OS, 64 or 32 bit.
I sent to my kids that are too lazy to install the Android SDK.....
SNadler said:
Try to start by verifying that adb can see your phone.
type "adb devices" (no quotes)
This should return a number, if not, the phone is not being seen by adb.
If not check drivers, cable, try different usb port.
If it does return a number you are properly connected.
Proceed to:
adb push zImage /sdcard/zImage
adb shell dd if=/sdcard/zImage of=/dev/block/mmcblk0p5
Might need to as su if prompt shows $ instead of #
Click to expand...
Click to collapse
I appreciate everyone's input... OK, here's where I stand:
adb does now recognize phone. After typing "adb devices", cmd window showed my phone in list of devices attached. I then proceeded to "adb push zImage /sdard/zImage... that seemed to work also [cmd window came back with "2544 KB/s (6718048 bytes in 2.578s)]. Next, I typed "adb shell dd if=/sdcard/zImage of=/dev/block/mmcblk0p5" [cmd window came back with "/dev/block/mmcblk0p5: cannot open for write: Permission denied"]
so is still a drivers issue? cable issue? or something else? Thx again
EDIT: one additional clue for all the experts: the zImage is now on my /sdcard. When I type "adb shell", I do get "$" instead of "#" in cmd window... and I know I have root on phone. When I type "adb shell su" in cmd window, I get "Permission denied".
Sometimes the root install won't completely work until you go to the Superuser app once manually. (e.g. in Applications).
Also, another possibility may be that there are two ways to run adb shell:
One is
Code:
adb shell <command>
Where it'll run <command> and then exit
Then there is
Code:
adb shell
<command1>
<command2>
exit
In the second, when you first type "adb shell" you'll get a shell prompt on your phone.
Then you'll type su (this will give you superuser privileges)
Then you run the dd command
Then you should be good.
The difference is: If you have a custom "insecure" kernel, an ADB shell defaults to root privileges. If you have a stock kernel, ADB shell defaults to "mortal user", and you need to manually use su to get root privileges.
Pushing the file to the SD card does not require root, writing the kernel to the kernel partition (mmcblk0p5) does.
Entropy512 said:
Sometimes the root install won't completely work until you go to the Superuser app once manually. (e.g. in Applications).
Also, another possibility may be that there are two ways to run adb shell:
One is
Code:
adb shell <command>
Where it'll run <command> and then exit
Then there is
Code:
adb shell
<command1>
<command2>
exit
In the second, when you first type "adb shell" you'll get a shell prompt on your phone.
Then you'll type su (this will give you superuser privileges)
Then you run the dd command
Then you should be good.
The difference is: If you have a custom "insecure" kernel, an ADB shell defaults to root privileges. If you have a stock kernel, ADB shell defaults to "mortal user", and you need to manually use su to get root privileges.
Pushing the file to the SD card does not require root, writing the kernel to the kernel partition (mmcblk0p5) does.
Click to expand...
Click to collapse
===============
Entropy512... you da man! I'm good to go now. As you recommended, even though I've been using Root Explorer and I know I was 'rooted', had to open SuperUser app on phone... then in the cmd window when I typed "adb shell" I got the "$" prompt. So at the $ prompt I typed "su"... this gave me the "#" prompt. SuperUser App then asked for SU permission acceptance. Then did the "dd xxxxxxxx" command, and it came back with:
13121 +1 records in
13121 +1 records out
6718048 bytes transferred in 2.895 secs (2320569 bytes/sec).
Rebooted phone to recovery, and have the light blue CWM Recovery 5.0.2.3.
Now I'm rooted, have CWM, and no triangle/counter of death. Hope this helps anyone else with a similar situation.
Again, a BIG shoutout to Entropy512, SNadler, jivy26, et al., for your constructive and quick replies. This forum is the best!
DocQ
One last [Q] Do I have to leave the large "zImage" file (6.41mb) in the /sdcard folder, or can it be removed /moved now that CWM successfully flashed?
DoctorQMM said:
One last [Q] Do I have to leave the large "zImage" file (6.41mb) in the /sdcard folder, or can it be removed /moved now that CWM successfully flashed?
Click to expand...
Click to collapse
No need to leave it, although I keep a bunch of various kernels in /sdcard/kernels myself - it's up to you.

[Q] ADB question

Ive pushed all kinds of other stuff, I did do the add system enviromental variable to XP so this could be my issue, though like i said its worked for other things ...
ERROR I GET>
CANNOT STAT
adb push stock-hc-flyer-hboot_1.11.0006.nb0 / && adb shell dd if=/stock-hc-flyer-hboot_1.11.0006.nb0 of=/dev/block/mmcblk0p18
NO SUCH FILE OR DIRECTORY
a thourough explanation or a cut and pastable pointing my adb to this file, its in the root, the variable is to the root C also, so....
PLEASE HELP, to get me past this 10+hours of hell
May be a connection between your computer and phone issue. I have this error when I wanted to root my nexus s. Try different driver for your flyer.
Accidentally sent from my Google Nexus S using XDA Premium
Make sure the adb works via "adb devices" and "adb shell". If it does not work you can try "adb kill-server" first.
I don't think you can write (push) to "/" without "adb remount". Not sure if it is a good idea to write to root directory.
Alternatively, you can use the storage in /data/local/tmp, it is always writable.

[Q] Proper adb command

Sorry for the noob question, but I am having some troubles doing a backup with adb. I have my phone rooted and can connect with adb, however I cant do a "adb pull / d:\whereveriwantit" without it just saying skipping special file for everything. I'm assuming because it is not pulling as root. So I try "adb shell" then "su" and I get root privileges, but then I cant figure out how to copy everything to say /sdcard/temp/ for me to then copy to my laptop (my unix command knowledge is lacking). Any help would be appreciated.
[EDIT] After some more playing around. I guess I can pull some things using the adb pull / <dir> , but alot of files are skipped "skipping special file" or "permission denied". Would using the proper commands in the shell after switching to root user be a better way to get the files copied?

Cat command help please

Hi,
I have a rooted device, and im using adb su to run the command 'cat /dev/block/mmcblk0>/sdcard/mmcblk0.img' but there is not enough space on the devie for it to complete, the device doesn't have a memory card slot - 'sdcard' is referring to its onboard storage. How can I dump directly to my PC instead of the device?
Thanks
Can't you just use adb pull instead?
reply
Hi, I used the command 'adb pull /dev/block/mmcblk0 c:\' and I get the error '/dev/block/mmcblk0 is not a file or directory' so the pull command wont work for this.
Thanks
aaronmarsh632 said:
Hi, I used the command 'adb pull /dev/block/mmcblk0 c:\' and I get the error '/dev/block/mmcblk0 is not a file or directory' so the pull command wont work for this.
Thanks
Click to expand...
Click to collapse
I get the same error in Windows, but it works in Linux. Hope this helps.
reply
Hi,
Thanks for the reply, I'll try it on my ubuntu system and see what happens, Tnx

ADB + Linux error: device unauthorized

Hi
First of all, sorry for my bad english.
It has been several hours that i'm trying to find a solution to my problem.
I want to wake my nvidia shield via adb command throught network.
I installed android tools on my raspberry pi, and when i connect to it via command line everything work, i can wake up the Shield.
But when i put my command line in a bash script
Code:
#!/bin/bash
adb kill-server
adb start-server
adb connect 192.168.1.38:5555
adb shell input keyevent KEYCODE_WAKEUP
adb kill-server
i have this error :
Code:
error: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.
I dont know why, when i am execute the command line in a bash script it can't find the rsa key, who is there and should be used.
Any ideas
Thanks in advance.
darkouz said:
Hi
First of all, sorry for my bad english.
It has been several hours that i'm trying to find a solution to my problem.
I want to wake my nvidia shield via adb command throught network.
I installed android tools on my raspberry pi, and when i connect to it via command line everything work, i can wake up the Shield.
But when i put my command line in a bash script
Code:
#!/bin/bash
adb kill-server
adb start-server
adb connect 192.168.1.38:5555
adb shell input keyevent KEYCODE_WAKEUP
adb kill-server
i have this error :
Code:
error: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.
I dont know why, when i am execute the command line in a bash script it can't find the rsa key, who is there and should be used.
Any ideas
Thanks in advance.
Click to expand...
Click to collapse
Normally on Windows the first time you turn on usb debugging it will pop up and ask you to accept the adb key. This is what is preventing you, I haven't had to resolve this in Linux, but essentially you need to go to C:\\Users\You\.android\ (in Windows, path will be different in Linux) and copy the file adbkey. Now you need to move it to data/misc/adb/
This will most likely require root or TWRP. Good luck, my friend.
Sent from my KYOCERA-C6745 using Tapatalk
Hi
Thanks for your quick response.
I couldn't make the connection via USB my adb tells me that there is no emulated device. But it work with network And yeah the first time I made the connection, the authorization pop up appeared on my shield. I checked, always authorized this device.
I have the key in /root/.android on my raspberry pi
I don't think I have the access to the /data/ folder in my shield.
But what I don't understand is why when I execute the command in a terminal like that, it work and when it's from the bash script it won't work anymore
darkouz said:
Hi
Thanks for your quick response.
I couldn't make the connection via USB my adb tells me that there is no emulated device. But it work with network And yeah the first time I made the connection, the authorization pop up appeared on my shield. I checked, always authorized this device.
I have the key in /root/.android on my raspberry pi
I don't think I have the access to the /data/ folder in my shield.
But what I don't understand is why when I execute the command in a terminal like that, it work and when it's from the bash script it won't work anymore
Click to expand...
Click to collapse
Option B would be to dump your boot.img and use Assayed's kitchen to add insecure kernel and adb direct root, then the adbkey doesn't need to be on the device.
Sent from my KYOCERA-C6745 using Tapatalk
RealWelder said:
Option B would be to dump your boot.img and use Assayed's kitchen to add insecure kernel and adb direct root, then the adbkey doesn't need to be on the device.
Sent from my KYOCERA-C6745 using Tapatalk
Click to expand...
Click to collapse
Yeah as you said in your previous post, i think the solution is to root the nvidia shield cause the rsa key doesny copy itself on the device.
But would you able to explain to me why if i execute those command individually in the terminal it works.
But if i put them all in a bash script that i execute it doesnt work anymore, what's the difference between those two procedure ?
darkouz said:
Yeah as you said in your previous post, i think the solution is to root the nvidia shield cause the rsa key doesny copy itself on the device.
But would you able to explain to me why if i execute those command individually in the terminal it works.
But if i put them all in a bash script that i execute it doesnt work anymore, what's the difference between those two procedure ?
Click to expand...
Click to collapse
How are you executing the script? There's some (hopefully) helpful info here.
https://community.spiceworks.com/topic/433656-command-not-running-in-batch-but-will-run-in-cmd
Sent from my KYOCERA-C6745 using Tapatalk
RealWelder said:
How are you executing the script? There's some (hopefully) helpful info here.
https://community.spiceworks.com/topic/433656-command-not-running-in-batch-but-will-run-in-cmd
Sent from my KYOCERA-C6745 using Tapatalk
Click to expand...
Click to collapse
i m doing : sh script.sh
i m gonna read that, thanks
I found the solution.
I don't really understand why, but adding
Code:
sleep 1
before
Code:
adb shell input keyevent KEYCODE_BACK
resolved the problem, maybe the script execution was to fast for adb to adjust, dont know.
All i know is, that works
darkouz said:
I found the solution.
I don't really understand why, but adding
Code:
sleep 1
before
Code:
adb shell input keyevent KEYCODE_BACK
resolved the problem, maybe the script execution was to fast for adb to adjust, dont know.
All i know is, that works
Click to expand...
Click to collapse
Glad you got it.
Sent from my KYOCERA-C6745 using Tapatalk
sudo rm -rf /home/(username)/.android
that worked with my kde neon machine

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