Questions tagged [external-sd]

For questions related to the external micro-SD card used by most Android devices to increase the amount of available storage. For the internal SD card, use 'internal-sd'. See the 'storage' tag wiki for a full overview of available storage-related tags.

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48
votes
6answers
272k views

Check and fix SD card errors within Android itself?

Sometimes my SD card gets "corrupted" and this leads to many read/write errors. Usually, connecting the SD card to the windows 7 and selecting the "Error Checking" (Right click the drive > Tools > ...
45
votes
2answers
134k views

How to upgrade / swap SD card without losing data and installed apps?

I have 2GB Micro SD card in my Android and want to upgrade to 4GB. How can I achieve it without losing anything from my 2GB card? I mostly use this card to store images/music and most of the apps.
38
votes
2answers
167k views

How to adopt SD card as internal storage on Samsung devices?

I recently upgraded to 6.0.1 Marshmallow on my Galaxy S5 and I would like to adopt an SD card as internal storage. However, there is no option to do this. When I format the SD card, there is no "...
36
votes
6answers
129k views

Best file system for an external SD card

I have a Galaxy S5 with Android 5 and got a new 64 GB SD card. What is the best file system for the SD card? FAT32 is not an option because I want files >4GB. Which file system offers the best ...
34
votes
1answer
31k views

How to decrypt Adopted Storage?

Using the SD card as Adopted Storage encrypts it. How can it be decrypted?
32
votes
3answers
96k views

How does the “Format as internal storage” feature work in Android 6.0+?

How does the "Format as internal storage" feature work in Android 6.0+? See screenshot below: Screenshot (click to enlarge) Why is it the case that "this USB drive will only work in this device"? Is ...
32
votes
5answers
166k views

Installing to SDCard by default

I would like to know whether there is a way to tell Android to install applications on the micro SD card by default instead of having to download applications to internal memory first and then having ...
26
votes
10answers
8k views

Other than portability, are there any other advantages (or disadvantages) to storing apps on external storage?

Are there any particular advantages/disadvantages to storing apps on the external storage of an Android device? As I have a Nexus S, I can't think of advantages for me as I can't remove the storage, ...
23
votes
2answers
35k views

SD card partitioning? why? how?

I am going to install cm7 and it seems to me that is 'good' to partition my SD card. I did some reading but I am not sure if ext partition will become accessible as mass storage when an Android phone ...
21
votes
2answers
34k views

I want to split one MicroSD card into two parts: part adoptable storage, and part normal storage. How can I do this?

I don't want all my storage as adopted storage, so I was wondering how I can split it into 1 part adopted storage and 1 part normal file storage (what Android calls "portable storage").
21
votes
3answers
5k views

How do I secure/encrypt SD card data transparent to apps?

Are there any off-the-shelf options for securing the contents of an SD card so that files written by apps writing to SD are encrypted? If so, what is the best option? I'm looking for something for ...
20
votes
2answers
9k views

How do I switch my Android device's SD card without causing problems?

I just got a new 32GB SD card for my Nexus One. On the old one I have a bunch of apps installed and store the data there because the internal memory doesn't handle it. So now I want to switch SD ...
20
votes
5answers
29k views

Can I use ext4 on my SD card in a non-rooted phone?

I know that on a rooted phone, it's reasonably normal to create a small ext4 partition for App2SD to use, but I'm not asking about that case: I have a non-rooted HTC Desire running Froyo, and I'd ...
18
votes
3answers
51k views

Why is the SD-card mounted to “/sdcard/external_sd” instead of “/sdcard” (or “/mnt/sdcard”)?

I recently upgraded my phone to an LG Motion 4G (Android 4 ICS). I see that the sdcard is mounted at /sdcard/external_sd. I also noticed that this appears to be the same with some other newer models. ...
17
votes
2answers
73k views

Data Recovery - How to Restore Deleted / Formatted Files on HD Micro SD Card

Background: I put in a friend's SD Card to format it because it was having problems. Then I put mine back in and I think my phone formatted my SD Card. I had a ton of pictures on there that are now ...
16
votes
2answers
761 views

Canonical explanation of Android Encryption and Vulnerabilities

Note: Well, the bounty expired and one possible reason could be effort required to address as I gather from comments. Seeing the number of upvotes, it appears to be of interest to others as well. I ...
15
votes
5answers
33k views

How to enable ext2 or ext3 partitions?

Does anyone know how I can enable ext2 or ext3 partitions on my LG Optimus V? I have already partitioned my 16GB SD card to 14.5 GB FAT32 and 500MB ext2. When using Link2SD it gives me a mount error. ...
14
votes
2answers
19k views

Is it possible to mount on a PC an SD card that has been encrypted by an Android Marshmallow device?

I have a Samsung Galaxy S5 duos with stock Android Marshmallow, and I'm considering encrypting my SD card to prevent access to its contents in case I lose my phone. The main reason of not doing this ...
14
votes
1answer
24k views

How can I recover the files in LOST.DIR on my SD card, and what are they?

I've always had a LOST.DIR folder on my external SD card, which until now has been empty. Today my phone complained that my SD card was damaged and wouldn't mount it, so I pulled it out and looked at ...
13
votes
1answer
3k views

How does Samsung implement SD card encryption?

My android device just stopped working. I still have my SD card, but all data in it is encrypted. Encryption has been performed at file level, so I have the directory structure and filenames in plain ...
12
votes
3answers
52k views

How do I check the class of a micro sd card? [closed]

I'm thinking about getting a new sd card and read that the class of them really matters. I'm looking at getting a 16gb one with a class not less than class 6. How do I check for the class?
12
votes
5answers
78k views

Moving installation location on non rooted Android 5 Lollipop device

I have a Moto G (2nd generation) with Android 5.02 on it. Internal SD card is about 8Gb and I have an external SD card with 16Gb free space. Moving application to SDCARD from the application's menu ...
11
votes
2answers
7k views

Can I remove MicroSD card with my Android phone turned on?

On my Samsung Galaxy 551 I can remove the MicroSD card without needing to remove the battery and consequently turn off my cellphone. Should I remove my SD without turning off the phone? Will I damage ...
11
votes
1answer
6k views

How to stop apps writing to “Android” folder on the SD card?

I have a (seemingly) simple question to which I haven't found a clear answer to. My phone creates an "Android" folder on my SD card and I'm wondering if it could be moved into the phone's internal ...
11
votes
4answers
110k views

How to move apps to external SD card on a non-rooted Android 4.4.2?

I have an Acer Iconia One 7 tablet running Android 4.4.2. I've plugged an external SD card in it, and kind of expected that I could now "save" my data, such as my apps, pictures and videos, onto ...
11
votes
2answers
4k views

What is the minimum MicroSD speed necessary to extend the storage of an Android phone?

I want to extended the storage of my Android phone be switching it to a MicroSD memory, as Android Marshmallow allows. What is the minimum speed I need to use to avoid impacting performance? I am ...
11
votes
1answer
31k views

How to decrypt the corrupt SD card formatted as internal storage?

So I'm on Marshmallow and have formatted my SD card as internal storage. Its filesystem got corrupt two weeks later for some reason. Plugging it to GParted, I see 16MB of FAT32 and the rest is an ...
11
votes
6answers
26k views

SD Card keeps getting unmounted on my HTC Desire

The SD card in my HTC Desire keeps getting unmounted every now and then and it's very annoying. From what I'm seeing, the SD card is removed only when some kind of multi-tasking with the files on it ...
11
votes
4answers
7k views

Is there any contact information on the SD card?

I found an sd card that was definitely in someone's android phone. Is there any file within the card that would have it's owner's info, so that I might contact them somehow and return what they've ...
11
votes
6answers
49k views

“Couldn't move app. Not enough storage space.” I have factory reset my phone, inserted & formated a new 64GB MicroSD Card

As my wife bought an Android Phone last year, she has been using an 8GB MicroSD card, recently she wanted to increase more storage space due to having more music and photograph files. As such, I ...
11
votes
2answers
8k views

Performance comparison between internal and external memory

What are the performance differences between phone's internal memory, the internal SD card, and the external SD card? I wonder if that counts when deciding where to store apps. What technologies are ...
11
votes
3answers
10k views

swap internal sd card to external storage

I wanna make my external sd my internal one without having the need to use an app. So Instead of having 8GB of internal storage I want to have 64GB (taken from the micro sd card). It worked on my ...
10
votes
3answers
12k views

Largest HTC Desire SD card?

My phone keeps telling me that my storage is low and I barely have any apps on my phone because it tells me this at least three to four times a day. I downloaded this app and moved all my apps (which ...
10
votes
2answers
13k views

Write permission on certain paths, like the SD card (extSdCard)

In an attempt to transfer a file from a remote server to an Android device I ran into permission problems. It turns out that I do not have a write permission at the location of the SD card (/mnt/...
10
votes
1answer
5k views

SSHelper: SD card Permission denied

I am unable to write to my sdcard using SSHelper: u0_a264@MSM8974:/storage/sdcard1 $ df /storage/sdcard1 ...
9
votes
4answers
38k views

Link2SD doesn't work on Marshmallow: No such file or directory

Due to my displeasure with the new SD card as internal storage of Marsmallow, I decided to switch back to Link2SD, something which I had been using on previous versions of Android. However, there's a ...
9
votes
3answers
74k views

How to prevent Android from creating LOST.DIR on SD card?

After the phone restarts, there is a LOST.DIR folder created on the external SD card. Is it possible not to create this folder if nothing is lost?
9
votes
4answers
28k views

How can I mount an ext4-formatted SD card with correct permissions (with root)?

I see some mentions here of creating an ext4-formatted SD card, but no guide. This closely-related question suggests there is no way to do it, but my question differs in that my phone is specifically ...
9
votes
2answers
3k views

How can I tell Google Play Music to store the audio files on the removable micro SD card (and not on the internal storage)?

How do I set the Google Music Play app to store the local "offline" music on the SD Card? I've used up about 90% of my internal storage. I've looked in the app Settings and don't see any options for ...
9
votes
2answers
23k views

Second partition can't be mounted (link2sd)

I'm trying to partition my external SD card (32GB SDHC), so I can link application to the second partition with link2sd. Now the problem is that, no matter what filesystem I use, link2sd can't create ...
8
votes
2answers
1k views

App2sd - Changing the SD Card

I plan to purchase a new micro SD card for my phone, I use app2SD for most of my programs, so what I wonder is what will happen if I get the new SD card, will I be able to copy the content of the old ...
8
votes
2answers
12k views

How can I make a symlink (or equivalent) inside /storage/emulated/0?

So, I have rooted my phone (GT-i9505 with android 5.0.1) and I would like to move my WhatsApp folder to my external SD card to save 3GB on internal storage. This is what I tried so far. EDIT: ...
8
votes
2answers
1k views

Is the class rating of my MicroSD card relevant?

Does Class 4 perform differently from Class 6, and so on, when it comes to Micro SD(HC) memory cards on smartphones? Samsung Galaxy S to be specific.
8
votes
2answers
8k views

Why does my HTC desire mount the SD card in read only mode?

I have a new HTC desire. After 3 days of use it started mounting the SD card in read only mode. I couldn't mount it in read-write mode until I formated the card in another phone. I read somewhere on ...
8
votes
1answer
4k views

SD card unexpectedly removed

I have a galaxy S3 with a 32gb class10 sd card. Unfortunately I experience the SD card unexpectedly removed - Preparing SD card phenomenon all the time. The card works ok as long as it is being used: ...
8
votes
2answers
18k views

Move DCIM .thumbnails to external SD

My phone has 1.5 GB internal memory and it's always full with gallery thumbnails (500 MB) . Every time I delete it for more space after one day it's full again . How can I move it to external micro ...
7
votes
3answers
7k views

Is my ext3 sd partitioning correct?

I've read a bit here on Android Enthusiasts and I've been able to partition my sdcard. A partition FAT32 and another one ext3, using the AmonRa Recovery for Acer Liquid Metal. Everything looks fine ...
7
votes
3answers
509 views

How can I prevent android apps from reformatting my SD card?

I have a 32GB micro SD card, and some of the apps I use state that they have permsisions to modify sd card memory. I have a lot of personal files on my card, and the other day, some app, I don't know ...
7
votes
1answer
8k views

Can I grant permanent access to external storage to an app in Nougat?

I'm using OnePlus 5 running stock 7.1.1. I use the OTG function to transfer file between my phone and my flash drive very often, and my preferred file manager is Root Explorer. Every time I try to ...
7
votes
2answers
1k views

Support for Ultra High Speed MicroSD cards

I am going to buy a new MicroSD card for my Motorola Milestone. The phone has Cyanogenmod 7. The upper limit as told by the manufacturer is 32GB, and because they got cheaper now, I'm going to buy the ...

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