dbzfanatic · Mar 23, 2011 at 03:00 am

How-To: Mount the /Cache Partition as a Fake SD Card

This won’t be useful to most users but to those of us who have a SD card that is either no longer recognized by the phone for some reason or just plain doesn’t work anymore, this will help.

I’m going to show you how to mount your phone’s /cache partition as your /sdcard partition, allowing the use of apps and widgets that require an SD card to work properly. A basic knowledge of ADB and Linux commands will be helpful but not entirely necessary, you should be able to just copy and paste the commands. This could be adapted to mount any writable partition as the SD card partition, such as using /data instead of /cache, which should allow a bit more information because of partition restrictions.

Things you will need:

* ADB;
* (optional) Terminal Emulator installed on your device.

I’ll try to explain the steps as best as I can while keeping the commands readable.

1: Boot into the main Android OS /*this is fairly obvious;
2: Plug your phone into your computer /*again obvious;
3: Open a command prompt/bash/terminal window /*we will by typing the commands here;

4: Type “adb devices” without quotes /*start the adb server if it isn’t and list attached devices;
4A: Linux only: type “sudo adb devices” instead and enter your root password /*start adb as root and list devices;

5: If your device is listed type “adb remount” without quotes, if it isn’t make sure you have usb debugging enabled and try again /*mount the main system as read/write;

6: (optional) type “adb shell” without quotes. if you prefer type all following commands in Terminal Emulator /*start the shell session for linux commands;

7: type “su” without quotes. You should get a #. If this is your first time using TE you will get a dialog asking you to allow su permissions for TE. Click “always allow” or “remember” and “yes” /*get su permissions for shell;

8: type “umount /sdcard” without quotes /*unmount the sdcard, just for good measure;

9: type “mount -o rw,remount /” without quotes /*mount the root filesystem system as read/write;

10: type “umount /sdcard” without quotes /*again,for good measure;

11: type “ln -s cache /sdcard” without quotes /*create a symlink to the /cache partition. now when apps look for /sdcard their data is saved in /cache;
12: Run the app or widget that requires SD card access. It should now work.

This will be undone with a reboot but it should allow you to at least get things working properly. Since this uses the /cache partition it uses the phone’s internal memory, which is very limited so be careful with what you download. This is a temporary fix until a replacement SD card can be obtained. You will still get that annoying notification that you don’t have an SD card inserted but apps and widgets should work just fine with it.

I have noticed that ROM Manager will not work with this method, nor will the camera, but an app called “Weather and Toggle Widgets” will allow you to do an initial setup and continue working even after a reboot. I have obviously not tested each and every app for compatibility but with minor tweaking this could come in handy for much more.


_________
Want something on the XDA Portal? Send us a tip!
TAGS:
Emil Kako · Mar 2, 2015 at 01:03 pm · 1 comment

How Do You Usually Access the XDA Forums?

There are a number of different apps on the Play Store that make browsing the XDA portal and forums a fun experience on mobile, but we want to know: What's your favorite way to access the XDA forums? Do you prefer browsing on the desktop, mobile app, or mobile browser? If you use a mobile app, which one? Let us know how you connect with our community in the comment section below.

DISCUSS
Faiz Malkani · Mar 2, 2015 at 12:39 pm · no comments

Google Announces Plans for Projects Titan, Loon and Link

Once a year, top players in the mobile sphere gather for MWC, to show off what they've been working on and collectively set the standard for the year to come. Yesterday was a big day with the launch of HTC and Samsung's flagships, alongside numerous other announcements, and today it was Google's turn to take the stage. SVP Sundar Pichai took the stage in Barcelona to speak about Google's network initiatives, Project Link and Project Loon, as well as to...

XDA NEWS
Mario Tomás Serrafero · Mar 2, 2015 at 11:36 am · 1 comment

Intel at MWC 2015: New Chip Branding and Details

Intel showed its face at MWC 2015 to give the world a yearly update on their upcoming line of chipsets for mobile. While last year the company focused on gathering partnerships and strengthening up their services, architectures and production, now they are revamping their Atom line of SoCs for mobile with a new brand name and a distinctive category format much like that of their i3/i5/i7 line of personal computing processors. The new scheme will be naming the chips x3, x5...

XDA NEWS
Share This