SD Card Unmounting Itself

[JIB_DK]

Here is the solution, which worked for me:
- Turned out that on my new phone, the MicroSD card slot did not fit the card 100%. In other words, it was simply possible to mount the card slightly skewed or non-straight. This should of course not be possible, but it was.
- I tried mounting (and by mounting, I mean physically mounting it, i.e. pressing the card into the slot with my fingers) it in a couple of different ways, nudging the top to the left, then to the right, etc.
- On my third attempt, I seemed to have hit the correct spot as the the mounting errors simply disappeared and are now gone completely.

So my solution was more or less similar to the solution from further up this thread, where a user managed to get it right by inserting a bit of a business card into the slot. Quite a low-tech solution, but I am happy that it works now.

 

[Canadazeus]

Just absorbed every opinion and wrong answer on the internet, and I finally stopped at your suggestion.... Take the easy way out. I put a shim of paper between the SD Card, (any brand, even though there is a lot more 'anti-SanDisk than any other, but they are probably 10 times bigger, it seems this problem is not hardware.) and the socket. Slide them both in together, make it click, and try one last time. Mine was stable for 3 years. A 1. Same as \0 I think. Not a single problem. Then, after maybe getting a small amount of moisture or vapor in the case from installing the sink, and recently moving a dozen apps onto the internal SD. It just booted, took forever with the first graphic, powered down, normal start, no SD Card. Read for 3 hours. (Remember how we used to be wizards with Bulletin Boards? UPANET?) Examined the gold contacts on the SD Card with a 30x glass, you can see not all contact scrapes are the same. Some longer, some not as deep as the others, etc, so like you, I chose the most obvious base problem.

Hope you are still out there... learning stuff. It's fun. A puzzle a day, and sometimes, we have a working phone.

 

[Paul Lewis14]

I have had this for the past week tried everything then I read this, go to settings storage unmount SD card power off phone physically take card out then replace power phone on phone will find SD card go into settings again unmount then mount card. I did this and for last two days I have had no issues.

 

[pizza_pablo]

Reviving am old thread to post my experience and results.
I had a Samsung 64GB micro SD card in my Galaxy S4. The phone was locking up while on the wall charger. It took me a bit of research to figure out the cause.
I found this thread, as well as others suggesting using chkdsk on Windows PC to fix the card.
I backed up the card and performed the check, formatted to exFAT and also formatted the card in the phone. Then copied the backed up contents to the freshly formatted SD card.
This cured the locking up, but then I got the card removed followed by checking card notifications.
While backing up the card, I noticed that it was nearly full. Having only a few GBs free space.
I bought a Samsung 128GB micro SD card, from Amazon, formatted it on the PC and the phone, copied the backed up contents from the 64GB card into the 128GB card and have not had any locking up or card removed notifications, for 2 days.
The S4 dies recognize all 128 (actually 120) GBs.

Posted via the Android Central App

 

[pavanparato]

iam also suffring same problem

 

[McKitten96]

I have been having the same problem. It says my sd card was unexpectedly removed and won't let me open the apps that are on it, however when I go to settings to mount it--it says there that the card is still mounted! I did a factory reset on my phone without the sd card inside it. Worked for a while, like a week or 2, but today it started same problem again. Will it still happen if I format the card? One person in the comments said they did and it didn't work.

 

[McKitten96]

Just absorbed every opinion and wrong answer on the internet, and I finally stopped at your suggestion.... Take the easy way out. I put a shim of paper between the SD Card, (any brand, even though there is a lot more 'anti-SanDisk than any other, but they are probably 10 times bigger, it seems this problem is not hardware.) and the socket. Slide them both in together, make it click, and try one last time. Mine was stable for 3 years. A 1. Same as \0 I think. Not a single problem. Then, after maybe getting a small amount of moisture or vapor in the case from installing the sink, and recently moving a dozen apps onto the internal SD. It just booted, took forever with the first graphic, powered down, normal start, no SD Card. Read for 3 hours. (Remember how we used to be wizards with Bulletin Boards? UPANET?) Examined the gold contacts on the SD Card with a 30x glass, you can see not all contact scrapes are the same. Some longer, some not as deep as the others, etc, so like you, I chose the most obvious base problem.

Hope you are still out there... learning stuff. It's fun. A puzzle a day, and sometimes, we have a working phone.

I have had my note 3 for almost 3 years and this problem only started a few months ago. If the issue is the sd card not fitting in right, how come it didn't act up for the longest time?

 

[mcroo]

I just had update also and just a bit ago i got the unmount message. I need help as to what i need to do and step by step instructions i am challenged when it comes to cell phones please if u could help me id really apprieciate it. And what is a root?

 

[Edwin Maduro]

SOLUTION / FIX:

I found a solution to this problem and only installing WAKE LOCK will fix the issue. Also you can do monitoring for your sdcard about unmounting/ejecting by installing SD Card Monitor

Hope this helps