Secure Digital (SD) cards are a widely used memory card format used by many technology brands brands in portable electronic devices such as digital cameras.

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MicroSD card is write protected

I have a 32 GB Lexar microSD which had been working perfectly for the past 3 months on my phone. But recently I noticed I am unable to write new files to the SD Card. I tried to format it from my ...
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23 views

Android says Damaged SD card at EVERY card [migrated]

I faced a problem with my 32 GB SD Card on Samsung Galaxy Grand Prime. Device says Damaged SD card. I changed it to a brand new (also 32 GB) SD card... And problem didn't gone. Each card read perfect ...
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49 views

How to check if SD/USB card become corrupted?

I have some raspberryPi2 model-B boards, using USB drives as their root filesystem. As it turned out, the USB chips I had chosen are prone to build up tremendous heat, and after 6-8 months, they ...
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27 views

Internal SD Card Drive not Returning/Waking up after Sleep/Hibernate

Here is the setup: I have an internal SD card reader in my laptop. It contains a 32GB SD card that contains my research library. Information I use on a regular basis. The problem: When the ...
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19 views

Understand the superblock error

I know this is a common error, but trying the solutions proposed in other threads hasn't fixed yet the issue. Furthermore I want to understand what I'm doing. This is what I did: downloaded an RPi ...
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2answers
36 views

How do I put a Micro-SD card into a slot for SD/MMC/SDHC?

An electronic picture frame has a lot for SD/MMC/SDHC. A Micro-SD card came with it and is supposed to go there, but is clearly too small for the slot. How do I insert this card? There is no ...
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1answer
25 views

USB flash drives or SD cards with S.M.A.R.T

Do any mainstream manufacturers incorporate Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) into their USB flash drives (aka "USB sticks") or SD cards? If not, why not? It can't be ...
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8 views

After resetting my Linx7/Win10 tablet - can't see MicroSD in Settings/Storage

It has worked before the reset (complete, removed all files). I can see/use the SD card to save files in Explorer, etc., but do not see it in Settings->Storage. Once I format the card/change drive ...
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1answer
29 views

Mac Not Able to Read SD Card

I have a microSD that I use in my raspberry pi. I have it plugged into my mac through an adapter and am trying to use it. However I cannot erase any of its contents and it (contents) does not show up ...
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21 views

SD Card disappear from Windows on Macbook Pro after waking up

I have the SD Card for my Macbook Pro running Windows. Every time the laptop goes to sleep and wake up, the SD Card disappear. It only comes back if you restart - I tried install new BootCamp driver, ...
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22 views

Unencrypt an SD card from a .key file

First of all, I'd like to apologise in case I asked this in the wrong place. I didn't think that this question was advanced enough for the Cryptography site, and not security-related enough for the ...
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25 views

Rescue SDcard spoiled by Android phone

My SD card is dead. It is a sandisk 32GB model (genuine one as I bought it from a well known seller). All I can see is a partition with 32MB total space. I've tried to recreate the partition table in ...
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7 views

Enabling DDR in SD/MMC causes problems? CMD 11 gives a response but the voltage switch wont complete

I am trying to enable DDR in sd (spec above 2.0) the procedure in the specifications is as follows Execute CMD0 to make the card idle. Execute CMD8 to enable ask about the voltage requirements ...
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1answer
58 views

ext4 SD card formatted on Linux, and will not show on OSX

I formatted an SD Card as ext4 on my Debian machine. Before I formatted I deleted all partions, created a single partion, and write the changes. I was able to mount the SD card on my Debian box and ...
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1answer
23 views

wear leveling on SD cards

A well-known SD card producer advertises that his SD cards use wear leveling. If enough space is free on the card, write access is evenly distributed over free memory. But how does the built-in ...
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11 views

Link errors with symlinks

I've moved all the files of ./usr to an external drive /home/Linkados/usr (SD card 8Gb) using $rsync --progress -l -r /usr /home/Linkados/usr Then I created a symbolic link from my SD to my flash ...
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65 views

32GB Sandisk unable to be formatted

I received a Sandisk 32GB microSD from my dad who asked me to format it. Plug it into a USB-based adapter (no write protection switch) and tried to access it on my computer. Problems : right ...
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2answers
37 views

How to test new SD card in Windows?

I purchased a new microSD card and I basically want to test it to ensure it's not corrupted and it's speed is within the specification printed on the packing (Class 10). How can I do that?
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1answer
40 views

How do I get my ASUS X401A laptop's SD/ MMC card reader to recognize I have an SD card inserted?

I had bought 2 external SD card readers for my laptop and just today realized I have a 2 -in-1 card reader ( SD/ MMC) on my laptop! But when I tried putting a 16 gb SD card into the slot and pushing ...
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0answers
29 views

Photos app won't display recent pictures

On my Tablet running Windows 10, the Photos app will now longer display new pictures synced to the SD card of the device. This behavior started in December 2015 - so Pictures from November or earlier ...
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1answer
41 views

SD Card Ignores Formating and file writes

I have a 16 GB Micro SD card from Samsung, and have only had it for about 4 months. I have not used it recently, but now that I have tried to format it, it does not work. On all the tools I have used ...
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1answer
47 views

64GB SD card missing files but correct size

I have a 64GB Samsung Evo class 10, which suddenly stopped working on my phone; can't mount/detect it. I accessed the card via laptop, which says 28GB used. But when I copied or scanned the files, ...
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1answer
61 views

SD card is titled “RECOVERY” and only has 1GB after using RPi

I was using a Raspberry PI 2 Model B, and I installed NOOBS. I selected and installed Raspbian, and I used my Pi for about 24 hours before I decided to re-install the OS. When I plugged in my micro SD ...
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1answer
37 views

Recover data from unreadable SD card [duplicate]

It's an 8GB micro SD card. It was on my Sony Xperia android smartphone, I almost never removed it from the phone. Suddenly about a month ago, the phone displayed a message saying that the card is not ...
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1answer
95 views

Write raw bytes to SD card on Windows

I am working on an embedded systems project in which we need to store some data on an SD card and read it with an FPGA. It would be simplest not to deal with a file system in this case, so I would ...
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1answer
50 views

How to troubleshoot slow read/write times from a multifunction printer/scanner's SD card?

I have been trying to help a friend diagnose a problem with their technology. On their WiFi network, they have an Epson WiFi printer/scanner and several Windows 7 SP1 systems. The printer/scanner ...
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1answer
29 views

How to know if an SDcard is about to fail?

I have an SDcard that is still working fine for about 8 years now. I am using it for an DSLR camera. I am quite paranoid that it will soon stop working while taking photos of an important event. Are ...
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28 views

no /dev/*, but /sys/bus/mmc device info on damaged SD-Card [duplicate]

A friend gave me a broken SD-card, hoping I might recover something from it. I have no trouble mounting any other cards, whatsoever. I am not getting any block devices in /dev, but the mmc subsystem ...
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1answer
76 views

Android can read my MicrosSD card but Windows cannot

I have recently bought this MicroSD card. The disk was working nicely with my both Android device and Windows PC (through its built-in MemoryCard reader). This is what I have done to cause the ...
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19 views

What is the difference between the UHS version and the UHS speed class of a SD card?

What is the difference between a SD card UHS version (UHS-I or UHS-II) and the UHS speed class? It seems they go hand in hand. Are they just redundant (UHS-I is always UHS speed class 1 and UHS-II is ...
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4answers
441 views

MicroSD card is not detected by Windows

I formatted my MicroSD card to HFS+ and then back to NTFS from within my Phone device (using an app namely Paragon exFAT, NTFS, and HFS+). Now that I insert the card into my PC (Windows 7), the ...
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31 views

Compatibility with FAT32 using 1024 sector size

On an embedded system, we are using FAT32 with 512 sector size on SDCard. We will be writing files of 800k and need to do this quickly. Our filesystem code writes in blocks of 512 to the SDCard ...
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24 views

SD Card Won't Mount

First off, the mount I am talking about is the SD card being able to be read/written to. So I have an Acer Aspire Switch 10 (AAS10 from hereon), Windows 8.1. So I wanted to look at pictures I took a ...
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23 views

SD Card Locked Error on camera

I have a Canon camera. Last week after recording some movies, it took so long to process, so I got bored, and unplugged its batteries :D Then I turned it on, it said "Memory Locked". I inserted the ...
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1answer
35 views

SD Memory card vs MicroSD with Adapter

Is a SD memory technically identical to a MicroSD with SD adapter? Can a software or reader distinguish one from other?
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I don't know if my sd card is corrupted or what? [duplicate]

I can't format my sd card. There is details like memory available and use,I can open the contents, but when i open the content, it will like disconnected (?). It is also the same when formatting ...
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0answers
19 views

Extension cable for internal SD card reader

I have card reader of Dell Inspiron 5520. You can see it here: Y0W97 But the cable is not enough long. There is any chance to buy extension for it? Or maybe buy longer cable and weld it?
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19 views

How to Prove SD Card functions correctly

I recently bought a micro SD card from China. I am wanting to test it to prove that it actually works. I have been trying to install it with my new Raspberry Pi, but have been getting corruption ...
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1answer
2k views

Why aren't SD card 'contacts' uniformly placed?

As you can see above, Some contacts seem to be longer than the rest. Also, on the SD card (2nd from top) the last one seems to be thinner and also closer to the seventh pin. Why not just uniformly ...
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0answers
286 views

How do I read/write images to eMMC boot partition(s)

I tried this question on Stackoverflow but it was modded offtopic; they suggested I try over here... I have a bunch of non-working Android mainboards I need to repair. Many of them have corrupted ...
2
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2answers
98 views

How can I retrieve data from a SD Card when photorec doesn't work?

A friend of mine took pictures of a Halloween party with his camera, and when he put the SD card in his computer, some of the pictures went missing. Knowing that I have successfully rescued his HD ...
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0answers
32 views

Corrupted SD Card

I am using Micro SD Card for OS on my Odroid micro-controller. Today I figured out that my Micro SD Card is not responding. I plug into my Laptop ( Linux OS ) and after that in other laptop ( Windows ...
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1answer
85 views

Does the BadUSB issue also affect SD cards?

Since I've heard about the BadUSB issue where the firmware of a USB stick can be maliciously changed, I was thinking about ways to avoid this issue. Would using SD cards as an alternative to USB ...
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3answers
156 views

How many times can SD card be overwritten and how to find out the actual number of overwrite cycles

How to find out overall health of an SD card? In particular: Can I detect the number of remaining overwrite cycles? Or the number of actually performed overwrite cycles on particular SD card? Whats ...
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1answer
80 views

Are Class 4 microSD cards faster than Class 10 microSD cards for small files?

In a comment to this Hardware Recommendations SE question, Agent_L writes: There is no such thing as "fastest" card, eg cards with higher (like 10) class are faster for large files (eg video) but ...
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3answers
80 views

Sd card surface disk errors and fix

I am using 16 gb sd card I used mini tools wizard 9.1 to do a surface scan on my 16gb sd card and I got 960 bad sectors, my question is how do I fix it?
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SD card stopped working [duplicate]

My 3DS SD card stopped working after connecting it to my PC with a USB card reader. Mobile phone says that my card has no format. I have very important data in it, any idea of what could I do to try ...
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1answer
197 views

sd card not detected at all in linux

My SD card reader is not detecting any SD card. There is no output from dmesg when an SD card is inserted. df does not detect anything and also nothing in fdisk -l. Does linux support SD cards? I ...
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1answer
47 views

SDXC Write Speed Decrease Over Time

I've noticed in using my external SDXC cards that the write speed tends to decrease over time during a large file transfer. For example, when an SDXC card is plugged into the port on my 15" rMBP and ...
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1answer
34 views

Can't format sd card bootmrg virus

I can't format my SD Card I was try disk part, SD Formatter, Windows Disk manger But i cant format my SD card Its Showing 45 MB my card is 4Gb Tell me any other way to format It