Database Users

Post-root USB errors, anyone?

I finally got around to rooting mine earlier today..
Ever since, I can't get either of my computers (both Mac and PC) to recognize the phone for mounting the SD card. It charges fine via USB but is impossible to mount as USB storage. Any ideas on this?

Maybe a driver issue?

I thought that originally. But if that were the case, I wouldn't have been able to connect to them previously (no changes in drivers on the computers) or been able to connect to complete the root process. I'm kind of at a loss for ideas right now.

hmm strange... I'm a android newbie so i don't think i can help passed driver

Method?
myz06vette said:
I finally got around to rooting mine earlier today..
Ever since, I can't get either of my computers (both Mac and PC) to recognize the phone for mounting the SD card. It charges fine via USB but is impossible to mount as USB storage. Any ideas on this?
Click to expand...
Click to collapse
Hey what method did you use to root? If you can mount your internal storage but not your sdcard, can your phone read your sd card when the phone is booted normally? Perhaps you damaged your slot?

dreamersipaq said:
Hey what method did you use to root? If you can mount your internal storage but not your sdcard, can your phone read your sd card when the phone is booted normally? Perhaps you damaged your slot?
Click to expand...
Click to collapse
exactly what i was thinking, but myz06vette are you able to view content from your sd card using just your phone? ex: music, movies or pictures?

Yes, I can view content on my SD card and internal phone storage on the phone itself using Root Explorer or ASTRO. I didn't use the method that required me to pull the SD card out. I can play music stored on the card and view all my photos, so I know its reading okay. I even took the SD card out and put it in a memory card reader and it hooked up to the computer fine.. mounted right away. Just won't mount through the phone.

myz06vette said:
Yes, I can view content on my SD card and internal phone storage on the phone itself using Root Explorer or ASTRO. I didn't use the method that required me to pull the SD card out. I can play music stored on the card and view all my photos, so I know its reading okay. I even took the SD card out and put it in a memory card reader and it hooked up to the computer fine.. mounted right away. Just won't mount through the phone.
Click to expand...
Click to collapse
The development.apk packaged in many Dream/G1 ROMs has an option to scan for media. Try that
BTW, *#*#4636#*#* also works from the dialer to pull up phone/radio options, which will allow you to switch between cdma auto (PRL) --> cdma only -->> ev-do only. The latter two options should save you battery!

Thanks for the advice! I updated to CDMA-only right when I got the phone.. so I honestly can't say whether or not its saving me battery since I don't know what it was like set to CDMA auto PRL hahaa.
I tried installing the Dev Tools apk you attached, but each time I do, it says "Application not installed" with the yellow !triangle next to it.

myz06vette said:
Thanks for the advice! I updated to CDMA-only right when I got the phone.. so I honestly can't say whether or not its saving me battery since I don't know what it was like set to CDMA auto PRL hahaa.
I tried installing the Dev Tools apk you attached, but each time I do, it says "Application not installed" with the yellow !triangle next to it.
Click to expand...
Click to collapse
Sorry, man -- that .apk was from an Eclair build -- try the new one I put up -- it's from an Espresso build, I just installed in on my DI -- all good

Hah alright fair enough. This one loaded fine.
Checking it out now... will report back. Thanks!

Half of the options in the app force close.
Media scanner loaded, but isn't helping me mount the sd card to my computer.
Any more ideas?

myz06vette said:
Half of the options in the app force close.
Media scanner loaded, but isn't helping me mount the sd card to my computer.
Any more ideas?
Click to expand...
Click to collapse
So you've checked your settings in "Connect to PC" -- perhaps your "always ask" option is cleared and it's set to HTC Sync, for example? What do you get in the SDcard/Storage menu? Any stats for the SDcard? What happens when you elect to eject it in that menu?

Storage menu shows total space and free space like it should.
Connect to PC is currently set to Ask me everytime.. option for Disk Drive selected just to try and force it to mount..
Removed SD card.. did battery pull reset.. still nothing.

myz06vette said:
Storage menu shows total space and free space like it should.
Connect to PC is currently set to Ask me everytime.. option for Disk Drive selected just to try and force it to mount..
Removed SD card.. did battery pull reset.. still nothing.
Click to expand...
Click to collapse
That's frustrating. You might have to back-up your sdcard data on a PC and re-format the card, then copy the data back. I'm assuming you have a card reader.

I hadn't thought until just now to try another card. I've got a few sitting around here somewhere. I'll try that before taking the time to backup almost a full 16 gigs of stuff, format, then restore it all.

myz06vette said:
Storage menu shows total space and free space like it should.
Connect to PC is currently set to Ask me everytime.. option for Disk Drive selected just to try and force it to mount..
Removed SD card.. did battery pull reset.. still nothing.
Click to expand...
Click to collapse
Do you have some sort of app killer/task manager auto killing the obex service? Ive noticed i have problems when it isnt running, but when it is running it kills battery like mad. Try going to settings>applications>running services and see if its running next time you try to mount. It should show up under calendar. Hope this helps.
P.S. I only let this service run when i need to plug into my pc, since it seems to keep the phone from being able to "sleep" properly. So if you have something killing it, or the calendar app has been removed that may have a part in your problem.

[Q] Catch-22 eLocity A7

I have installed A7Comb rom which mostly does a good job. The biggest problem is that external sdcard and usb are inaccessible. If I choose to go back to 3.01 where I had this capability, access to external sdcard is required to flash the old rom. Am I screwed or are there any other alternatives?
ooorah

im not positive, but if i remember correctly you have access to the external sd (using Root Explorer or something like it) there is /Mnt/sdcard check in there im not sure the exact directory, but im pretty sure it was in there when i was using A7comb, then you can copy and paste the update.zip to the root of the sd
Let me know if you can't find it, i will flash A7comb real quick to give you a hand

Catch-22 eLocity A7
smallba, Thanks for the reply. Can root explorer be used to do the rom flashing? I can get the 1.41 rom on the sdcard using my desktop, but the A7 can't see it. I've tried to flash using the start button routine, but it never recognizes the sdcard and sends me back to boot. Then I cant boot until I remove the sdcard. Also, even though I'm rooted and have superuser, root explorer always fc's. What a mess.
ooorah

ooorah said:
I have installed A7Comb rom which mostly does a good job. The biggest problem is that external sdcard and usb are inaccessible. If I choose to go back to 3.01 where I had this capability, access to external sdcard is required to flash the old rom. Am I screwed or are there any other alternatives?
ooorah
Click to expand...
Click to collapse
Try mnt/external_sd ..

ooorah said:
smallba, Thanks for the reply. Can root explorer be used to do the rom flashing? I can get the 1.41 rom on the sdcard using my desktop, but the A7 can't see it. I've tried to flash using the start button routine, but it never recognizes the sdcard and sends me back to boot. Then I cant boot until I remove the sdcard. Also, even though I'm rooted and have superuser, root explorer always fc's. What a mess.
ooorah
Click to expand...
Click to collapse
Do you have Sdhc adaptor physically plug the micro sdhc in the computer and then move the update zip to the sd?
What kind of sdcard are u using?
Sent from my PC36100 using XDA Premium App

Thanks for your reply. At /mnt/external_sd the sd folder is shown as empty.
ooorah

smallba I connect via usb to my desktop using a Targus adapter. The sdscard is Kingston 2gb formatted fat32. I cut/paste update.zip to the sd card.
ooorah

Do you have a cell phone to try the sd card in? I just want to make sure it is not corrupted, you have flashed before using this same sdcard?
Sent from my PC36100 using XDA Premium App

Yes I've used this sd card to flash on my Acer A500. I'm sure it's ok.
ooorah

What does it do when you put in and pull out the sdcard?
Sent from my PC36100 using XDA Premium App

When sdcard is installed I look at externai_sd and it's empty. I cannot reboot until the sdcard is removed. BTW, various mount apps I've tried fail to recognize the presence of a sdcard.
ooorah

I know I been asking many questions, but it recognized in the accer?
Sent from my PC36100 using XDA Premium App

Yes, sdcard was recognized in Acer 500. Content was shown under external sd.

A7
What rom are you trying to flash back to?
I had some issues reverting back from A7Comb.
I think I had to flash back to stock first.

Re: your previous post, how can I flash back to stock if I can't find external sd?
ooorah

Cant read SD
I reloaded my copy of A7Comb and will play around with it to see if I run into the same issue. If the SD can't be used, it may be possible to connect via USB/ADB and push the stock images.
However, I have never used ADB with the A7, only with other devices. I will also try and figure that out to see if that's a viable option. Will need to find the drivers and get those loaded. Been meaning to test ADB with this device anyway.

Thanks DANO, I'd appreciate the help.
ooorah

I'll do what I can, I'm no expert, but I am very comfortable with ADB and have no concerns about messing with my A7. I've been meaning to do this for a while anyway. Will probably take me a few days to get get the A7 connected to ADB as its USB port doesn't play nice, and there are some tricks to getting windows/ADB to pick up the device. I'm also gonna try and lookup Dexter to see if he can give me some tips on doing this.

I used ADB last March and rooted my CRUZ 7" tablet. Whether it will work with a usb connection to eLocity A7 will have to be tried. I'll play around to see if I can get it working. If I get that far I'll have to wait for further instructions.
ps I can use a usb keyboard with no problem. ooorah

Yeah, keyboards, thumb drives, etc. should all work as the A7’s USB slot is set to host mode by default. The trick is flipping the switch to slave/device mode so we can use ADB to communicate with it.
Dexter’s A7Comb Rom had an App “OTG” for doing this (with a reboot), but when I tried it out, my Windows 7 box only saw the device but still didn’t fully communicate with it (ADB didn’t see it at all). Most likely due to the lack of a driver, or rather telling it where the driver was.
I’ve got some info on doing this, and I plan on trying to get this up and going tonight. Once I get ADB connected to the A7, I would think we should be able to push a new recovery image or something along those lines to fix whatever happened with the SD Card.
Just curious, have you tried a factory reset, data wipe, etc. (then reboot back into recovery), and tried to run the update.zip from the SD Card. I doubt this will work, but the A7 re-writes the recovery image with each update, therefore if something got corrupted, perhaps a wipe will fix whatever is broken in recovery by way of re-writing it. I’m not sure if recovery gets replaced with just a data wipe/reset, but if you don’t mind resetting your device it might be worth a shot.

[Q] USB connection : Installer back to Mass Storage

Installed ZIPS Creamed Glacier V3.11 on MT4G.
Almost everything is working, so happy with ROM and recent enhancements. Thank you.
While connecting the phone to Windows 7 machine via USB, phone shows “USB Connected as an Installer”. It further provides choice of MTP/PTP. Phone SD card does NOT show as drive on Windows machine.
What do I need to do in order to access SD Card from Windows 7? I wanted to copy the nandroid backups from SD card and copy new ROMs on the SD card.
Is there a way to go back to USB mass storage option?
Thanks

alternative till update
have you tried Droid Explorer? works quite well. will reonnize without a problem.

under the "connect to pc" option in settings, i had to uncheck the 'ask me first' option and select disk drive to get my computer to recognize my phone when using Roms without the Mass Storage app on them...i really wish it was on all roms..
Sent from my HTC Glacier using xda premium

Could not find connect to PC option on Creamed Glacier rom.
Droid Explorer works. It shows all the folders (systems too) from the phone. Just need to be more careful while using it.
Also found way to toggle USB under my recovery (EXT4).
Thank you all for your suggestions.

userofxda said:
Installed ZIPS Creamed Glacier V3.11 on MT4G.
Almost everything is working, so happy with ROM and recent enhancements. Thank you.
While connecting the phone to Windows 7 machine via USB, phone shows “USB Connected as an Installer”. It further provides choice of MTP/PTP. Phone SD card does NOT show as drive on Windows machine.
What do I need to do in order to access SD Card from Windows 7? I wanted to copy the nandroid backups from SD card and copy new ROMs on the SD card.
Is there a way to go back to USB mass storage option?
Thanks
Click to expand...
Click to collapse
This is a known bug in 3.11. I think the fix is in here But if you wait a couple of days then the new release of Zips Creamed Glacier should fix this issue along with other issues.

what i did to transfer files onto sd card is use the android sdk
connected phone via USB opened the cmd prompt for sdk
and used adb push method
so when i wanted to install the low mic fix i;
copied the file to the platform tools folder then
adb push lowmicfix.zip sdcard/lowmicfix.zip
thats pretty much how im transferring files onto the sd card
zips said all these issues will be addressed in the next version
oh and if you wanted to copy something from your sd card to your computer look at the file from your file manager app to see the name then
use adb pull method

Or you can download an app to mount your usb.
If I helped, give thanks, if you please.
........Death before dishonor........
Team inferno
Leader

What is App to support mounting USB?

userofxda said:
What is App to support mounting USB?
Click to expand...
Click to collapse
Multi mount
If I helped, give thanks, if you please.
........Death before dishonor........
Team inferno
Leader

Multi Mount Work !
This seems to be the easient approach to mount and access my SD card under this ROM.
Thank you very much.

Cant access USB transfer in TWRP.

Im having an issue with TWRP 2.2.2.0.
It seems that I cant mount USB storage from the recovery at all. I can hear the sound on my lappy that a USB device is connected but when I try to mount through the recovery, nothing shows up on my computer. I tried mounting all the options there with no luck. Is this a known issue or have I messed up with my Nexie somewhere?
Thanks in advance fellow forumites.

Are you trying with usb otg? as in, cable and flash drive?

chichoko said:
Im having an issue with TWRP 2.2.2.0.
It seems that I cant mount USB storage from the recovery at all. I can hear the sound on my lappy that a USB device is connected but when I try to mount through the recovery, nothing shows up on my computer. I tried mounting all the options there with no luck. Is this a known issue or have I messed up with my Nexie somewhere?
Thanks in advance fellow forumites.
Click to expand...
Click to collapse
I couldn't figure that out either, I'm also using twrp. I had to use adb to transfer files. I don't think you messed up your nexie.

unclefrancis said:
I couldn't figure that out either, I'm also using twrp. I had to use adb to transfer files. I don't think you messed up your nexie.
Click to expand...
Click to collapse
I am having the same problem.
With my Kindle Fire I could connect with a USB cable and see all the files on my pc, just like it was a drive. I can't get that to work on my N7. The only way I can do it is to use WIFI File explorer which works great, but I would still like to get the cable to do it's thing if possible.

goofball2k said:
Are you trying with usb otg? as in, cable and flash drive?
Click to expand...
Click to collapse
Im trying to access the internal storage of the N7 from within the recovery. And it seems impossible :S
Right now for example, I wanted to do a NAND backup but I forgot to delete the previous one and Im out of space. The only thing I can do is reboot back to the system, plug in the usb and delete the backup, then reboot into recovery and backup -.- I wanted to avoid just that but it seems that USB mount doesnt work in TWRP at all. Is anyone using CWMR and can report wether it works there? I would re-flash the recovery in an instant...

Plugging my device into my PC, there is a TWRP folder that contains the backup I made. Couldn't you do this and just delete that folder? I'm not in debugging mode.

Some times windows detect USB device but fail to attribute a letter for that mass storage device. Look at disk managment for storage device without a letter.
Sent from my LG-P500 using xda premium

Visa Declined said:
Plugging my device into my PC, there is a TWRP folder that contains the backup I made. Couldn't you do this and just delete that folder? I'm not in debugging mode.
Click to expand...
Click to collapse
I'm used to do all that stuff from within the recovery on my phone... So Im looking for the same thing for my Nexie. My biggest concern is that I wanted to have USB mount from within the recovery in case my Nexus fails to boot so I can transfer a new ROM and flash it with ease. Dont want to mess with ADB for basic stuff. I can access the storage when its booted normally just fine, its the recovery mount thats bothering me...
maztahbr said:
Some times windows detect USB device but fail to attribute a letter for that mass storage device. Look at disk managment for storage device without a letter.
Sent from my LG-P500 using xda premium
Click to expand...
Click to collapse
That is something I completely forgot about, will check it later on and report back. Awesome advice, thanks man! :good:

unclefrancis said:
I couldn't figure that out either, I'm also using twrp. I had to use adb to transfer files. I don't think you messed up your nexie.
Click to expand...
Click to collapse
How do I use adb to transfer files? Thanks

Adb push/pull file_name
I guess
Sent from my LG-P500 using xda premium

I don't have fast boot though .... What else should I do?

[Q] Need Help. Phone Bricked

I was following this guide to root, install a custom recovery, and then flash a ROM onto my phone. I rooted successfully and created a back up. I then copied the backup onto my external sd card. I then put the custom rom onto my sd card and entered recovery mode on CWM. I wiped my device and then realized that the custom rom was the incorrect file. I then went to restore and it gave me an error md5 mismatch. I then went to restore of external sd card and it said it could not find the directory. I then went to restart phone and CWM said I was not rooted anymore and asked if I wanted root access and I hit yes.
My phone will not start and just remains in the Samsung loading screen with an unlocked graphic with the words "custom" under it. I am able to get back into CWM recovery but nothing else seems to work. I appreciate any help I can get. Thanks

domisterwoozy said:
I was following this guide to root, install a custom recovery, and then flash a ROM onto my phone. I rooted successfully and created a back up. I then copied the backup onto my external sd card. I then put the custom rom onto my sd card and entered recovery mode on CWM. I wiped my device and then realized that the custom rom was the incorrect file. I then went to restore and it gave me an error md5 mismatch. I then went to restore of external sd card and it said it could not find the directory. I then went to restart phone and CWM said I was not rooted anymore and asked if I wanted root access and I hit yes.
My phone will not start and just remains in the Samsung loading screen with an unlocked graphic with the words "custom" under it. I am able to get back into CWM recovery but nothing else seems to work. I appreciate any help I can get. Thanks
Click to expand...
Click to collapse
You can either use a MicroSD to SD adpater and the computer's card reader to copy a ROM over and flash it, or ODIN back to stock, and start over.

Ol' Dirty Bastard said:
You can either use a MicroSD to SD adpater and the computer's card reader to copy a ROM over and flash it, or ODIN back to stock, and start over.
Click to expand...
Click to collapse
Much better. Was that so hard? Thank you for details.
(jab)

Any ideas why it cannot find directory when I try to restore from my external sd card.

write protected
domisterwoozy said:
Any ideas why it cannot find directory when I try to restore from my external sd card.
Click to expand...
Click to collapse
Clueless here. Made a post about it.
I just discovered today more than just myself are unable to plug the handset into a computer to exchange files. I can get things off the phone onto the computer, but not vice versa.
Also the handset itself is fussy when it comes to viewing it's own external SD card. It would seem it doesn't take much for it to disappear, once in recovery.

fukenbiker said:
Clueless here. Made a post about it.
I just discovered today more than just myself are unable to plug the handset into a computer to exchange files. I can get things off the phone onto the computer, but not vice versa.
Also the handset itself is fussy when it comes to viewing it's own external SD card. It would seem it doesn't take much for it to disappear, once in recovery.
Click to expand...
Click to collapse
This phone does not support mass USB storage. It uses MTP and PTP protocols. This information is available in several threads in the forum. Now, of course, even with MTP and PTP you should be able to still transfer files from a PC to the Ext. SD card considering you have the correct drivers. Perhaps your SD card isn't playing nice with your phone? Have you tried removing the card from your phone and transferring files to it dierectly from you PC via SD slot or card reader? Have you tried other brands? I find Samsung cards work best, but that is just me, This will help to see if it is the phone (possibly cable) or the card that is having issues.
Also, you can check this out. It supposedly enables Mass USB storage for this phone...though it still says it doesn't work for the Ext. SD card. I have never tried it, so if you do it is at your own risk but maybe it will help? Good luck.
https://play.google.com/store/apps/details?id=com.mohammadag.samsungusbmassstorageenabler
The app says it is for the SIII, but people have reported it as working with the S4 as well.

thank you
scott14719 said:
This phone does not support mass USB storage. It uses MTP and PTP protocols. This information is available in several threads in the forum. Now, of course, even with MTP and PTP you should be able to still transfer files from a PC to the Ext. SD card considering you have the correct drivers. Perhaps your SD card isn't playing nice with your phone? Have you tried removing the card from your phone and transferring files to it dierectly from you PC via SD slot or card reader? Have you tried other brands? I find Samsung cards work best, but that is just me, This will help to see if it is the phone (possibly cable) or the card that is having issues.
Also, you can check this out. It supposedly enables Mass USB storage for this phone...though it still says it doesn't work for the Ext. SD card. I have never tried it, so if you do it is at your own risk but maybe it will help? Good luck.
https://play.google.com/store/apps/details?id=com.mohammadag.samsungusbmassstorageenabler
The app says it is for the SIII, but people have reported it as working with the S4 as well.
Click to expand...
Click to collapse
I am too happy to experiment like that. The AT&T S4 running GoldenEye with no add ons is the best darn handset I've ever enjoyed. I love being rid of the bloatware. I don't miss it a bit. I will fuss around with the SD interface as I do have resources like you mentioned, I can try a different chip. I didn't consider that a bad chip would cause the computer to consider the entire handset as "read only", yet you suggest it's possible?

fukenbiker said:
I am too happy to experiment like that. The AT&T S4 running GoldenEye with no add ons is the best darn handset I've ever enjoyed. I love being rid of the bloatware. I don't miss it a bit. I will fuss around with the SD interface as I do have resources like you mentioned, I can try a different chip. I didn't consider that a bad chip would cause the computer to consider the entire handset as "read only", yet you suggest it's possible?
Click to expand...
Click to collapse
Anything is possible and it would be a simple way to maybe help identify where the problem lies. Better yet, take your sd card out of your phone and try a transfer. That will let you know if it has anything to do with it. If it still doesn't work, it more than likely has nothing to do with the SD card.
Can you transfer files from your External SD card to your phones internal SD memory and the other way around (via a file manager on your phone)?
If you can, I can't see how it would be a "read' only problem.

scott14719 said:
Anything is possible and it would be a simple way to maybe help identify where the problem lies. Better yet, take your sd card out of your phone and try a transfer. That will let you know if it has anything to do with it. If it still doesn't work, it more than likely has nothing to do with the SD card.
Can you transfer files from your External SD card to your phones internal SD memory and the other way around (via a file manager on your phone)?
If you can, I can't see how it would be a "read' only problem.
Click to expand...
Click to collapse
I should unhook my phone from the 3.5mm jack and look into this. As I type, my S4 is piping in my playlist to provide the wife and I musical background for our activities. I remember using "Root Explorer" recently to delete a nandroid backup, and to move said playlist off the SD card into Phone memory. The "write protected" error showed up directly after building this playlist, using the computer to organize it. It's brand new, and as a good troubleshooter, we always look at the last thing you did different. I used the "windows explorer" to edit my playlist on the phone while it was plugged up together.
It's turning out to be a bigger deal than just myself, and I should pursue your recommendation for testing and reports, but it's not broken enough to fix and it's Sunday night, and the music is more important at this juncture.
Edit:
I powered down and then removed the Micro SD, and when I powered back up, it showed that cool padlock icon with the label "Custom" screen during boot up. I hadn't seen that screen on boot up since I used Casual to get a TWRP recovery.
I tethered the handset to the Desktop and opened the windows explorer. Obviously it just showed phone this time, instead of phone and card. I tested copying files and it worked fine, the "write protected" error was gone.
I unhooked, powered down, put the micro SD card back in, powered up and noted the boot up screen was back to normal. Tethered up again and voila! Files can be written to the phone and or the card and no more "write protected" error.
Funny little fluke. Problem solved. Curiosity remains.