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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sdcard performance bottleneck

I have loaded my 4 GB FAT32 sdcard almost entirely with mp3 files. Now, I cannot remove none of them because "discovering items" never ends. Even command line tools last forever, including format e:. ...
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17 views

dd always fails to write one partition on first try; succeeds on second

For a robotics project, I've assembled a make target that uses dd (actually dcfldd) to write a Raspbian Jessie image to SD card. This way, I can be assured that my environment is reproducible from ...
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477 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 ...
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457 views

SD card write protection

I'm trying to remove write protection from my 32 GB microSD from QUMOX. It worked till yesterday, when my phone said "SD card is damaged, try to format". So I did, no luck. Every time I try to write ...
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140 views

dd an image, but only getting a fraction of the space on my SD card

I downloaded an image of Ubuntu Linaro. I then dd the image onto an SD card that is 32GB as follows: sudo dd bs=4M if=ubuntu-14.04-hdmi-z7010-20140611.img of=/dev/mmcblk0 Works fine, I can boot ...
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3k views

Format 64gb SDXC card as NTFS file system

I've tried using Windows (8), Linux (Ubuntu 14.04), and Android (Samsung Galaxy S4) to re-format my old SD card. It is currently formatted in exFat, and it seems that during an rsync 3 of my music ...
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2k views

How delete “Other” files in SD card windows phone

When I opened Storage Sense from my Lumia mobile, it has a section of other files. And it is saying around 1.3 GB of other files are present and they were not recognized. It also says, connect mobile ...
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204 views

What is the purpose of the contacts under the sticker on the underside of this microSD card?

Many (most?) microSDs have a sticker on the bottom: I peeled one off, and revealed several small copper contacts beneath it: What is the purpose of these?
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715 views

MIcro SD card gets slower after partial fullfillment

I have a micro SD card from Kingston - 32GB class 10 When i'm writing on it using usb card reader or my phone, average write speed is about 6MB/s But after about 10GB of data written into it, ...
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653 views

Android: External SD Card storage size

I have a Samsung Galaxy S4 Active SGH-I537. I let it format my Samsung Class 10 SDHC 64 GB card. It used exFAT format. I then transfered my MP3 collection to it, which is about 34 GB. When I finished, ...
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9 views

How can I create partitions on a SD card (mmc) at a firmware level

I want to prevent data corruption on an SD card by having a read only partition and a read/write partition. SD card controllers don't respect partitions on the physical flash disk so normal ...
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50 views

Why doesn't my android tablet read my SD-Card, when it is readable by other devices?

I have : A feature phone An Android Tablet - iBall Slide Brillante 8GB A 2 GB Sandisk SD-Card. A Windows-7 laptop computer. My SD-Card was essentially for use in my feature phone. I have been ...
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68 views

How can I expand Bluestacks memory in Windows 10?

My computer recently updated to Windows 10. Since then, Bluestacks (which I use mainly to access Whatsapp) has a very limited amount of space, and when I try to download pictures/videos it tells me ...
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24 views

Need help writing Linux script to automate moving files when flash drive is inserted

I am trying to use a Raspberry Pi running Raspbian to automatically move (not copy) the contents of Folder A (local) to Folder B (on SD card via USB to SD card reader) automatically when the card/...
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73 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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90 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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41 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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205 views

How do I boot from SD card on Toshiba Satellite A300D-21R?

The problem: I recovered a quite old notebook(Toshiba Satellite A300D-21R -- can't find it in Toshiba discontinued products... This model just doesn't exist on the internet) without a harddrive so I ...
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233 views

Eject USB drive using the explorer

When I right click a drive in the This PC view which is associated with an SD card I have the option in the context menu to eject it. If it is associated with a USB flash drive this option doesn't ...
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200 views

SD card not detected

I have a SD card with photos I'd like to recover. The card suddenly stopped working in camera, maybe because of the temperatures like 40C outside. The camera can't read the card and advises to use ...
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171 views

SD Card calculate lifetime

I wanted to calculate the lifetime of my SD-Card but i am not sure if i do it the correct way: My SD-Card uses SLC Flash which can have about 100k write cycles. I write a new file to the card every ...
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100 views

Can't recover sd card

I have a SD card I can no longer access. I would like to recover its data. I use a USB SD card reader. When plugged in, the SD card is not mounted, not shown with fdisk -l. Output of syslog when ...
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48 views

SD card img file copying on linux

I am trying to make Banana PI bootable SD card. First delete old partitions from SD, then create two new partitions and format them as vfat and ext4, as here described Then copying disk image: sudo ...
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2k views

Booting SD card from UEFI

I've come across the problem. I'm trying to boot a bootable SD Card using UEFI. However, this doesn't work, as there is no "SD Card" boot option AFAIK. I have tried putting all the USB-related ...
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237 views

Surface 2 tablet: moving apps to sd card triggers errors

I'm trying to move the WindowsApps folder to my SD card on my Surface 2 tablet. It's a 32 GB model, and already out of storage. As a workaround (Windows RT forces uses to install only on the built-in ...
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373 views

Dell Inspiron 660 won't boot from SD card

I've recently moved and being the smart guy I am, I left my USB drive back at my old house. I'm trying to use a friend's SD card to reinstall Ubuntu. I set it up exactly the same way as I would my ...
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259 views

Effectiveness of SD Card write protect switch as protection from viruses

Given that the SD card write protect switch simply indicates to the OS that it is switched, and doesn't prevent writes to the medium, how effective is enabling write protect against viruses? Are ...
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967 views

Filesystem on sd-card lost

Last time I want to bring my photos from SD-card (Sandisk Ultra SDHC 32 GB) to my computer (windows), my computer said that there is no file system on the card and I should format the card. Also my ...
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92 views

Use SYSLINUX to boot from a separate device

I have a laptop with no harddrive that I'm booting from a modified persistent LiveCD thumbdrive, but performance is terrible due to the low speed of the thumbdrive. I also have a class-10 SD card of ...
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254 views

Internal card reader not recognized on boot

In 9/10 times, my internal card reader is not recognized when booting my pc. It's a desktop computer and the card reader is attached directly (internally) to the mainboard (Asus H81M-K) via 9-pin ...
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406 views

No Read/Write SD Card Permissions on Windows 7

I'm sorry, I try as often as possible to avoid repeating questions but I've tried the suggestions on previous threads here and elsewhere and I cannot fix it. I have an SD card I'm trying to open ...
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89 views

Quicktime killed my AVCHD file

I have a Sony DSC-HX50V photo camera. The system I have been using for video storage is this AVCHD thing, which consists of a big file storing all the videos. Using Quicktime under Mac OS 10.9.2, it ...
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710 views

How to repair SD card that was unplugged during formatting?

I tried to format my SD card on my Windows computer but unfortunately I pulled it out during the process. Now it can't be recognized. I tried to wipe it using disk utility on Mac OS X but after it's ...
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123 views

My micro SD card issue

I have a micros SD card. When I put it into my windows 7 machine using USB adapter, windows explorer shows that and I also can open it and see the files and folders. But I can't run the files and open ...
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1k views

Micro-sd card readable but not able to write or format

I've a Sandisk 64gb class 10 microsd that used to work fine. All of a sudden it has become read-only. I can read all files, but I cannot delete/add any files or format the sdcard in Android, linux or ...
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2k views

SDcard /dev/sdb2 is apparently in use by the system; will not make a filesystem here

I divided my sdcard into 2 partitions, but It got an error and couldn't create a new partition. Error: /dev/sdb2 is apparently in use by the system; will not make a filesystem here! My /dev/...
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65 views

HTC Android Fails to mount- Mount from computer?

I Have an HTC Incredible S (S-Off, Rooted, ViperVIVO 1.3.0 ICS) that has seemingly ceased to posses the ability to mount its SD Storage to my computer. For whatever reason, whenever I plug in my ...
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145 views

SD Card Not Detected…Any Last Resorts?

I've got a 16GB Class 10 SD card that I've been using in my Raspberry Pi. It became unresponsive last night and my only other option was to pull the plug, which I know was more than likely to cause ...
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242 views

Windows detects SD card but can't read it's contents

All of a sudden my Windows XP PC can't read what is on SD cards and some USB sticks. Even though the drive is detected, it shows it empty. I don't have that problem reading the same cards on my ...
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167 views

Windows can't access/modify large SD Card Files

I have a 32GB SD Card I use with my GoPro. It's FAT32, and I'm running it on Windows 7. I have 50 files or so on it of videos from my GoPro. I can copy all but two off of it. Those two are the ...
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195 views

How to clone a SD card from HP network attached photosmart printer using Linux?

How to make a low level (file system unaware) cloning of a SD card inserted in an HP Photosmart printer, which is accessible via a local network ? smb://192.168.1.58 (192.168.1.58 is my printer IP) ...
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186 views

One particular SD card not working

I have a 32 GB SanDisk class 10 SDHC card. It works perfectly in my camera and in my netbook. However, when I plug it to my notebook I got this in dmesg: [ 1824.729234] mmc1: error -110 whilst ...
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387 views

My files on micro SD card not showing on macbook pro 13"

Used to work fine. Could it be a virus from Window PC, I can't see my photos on SD card on mac. Is there any way to copy these views. I know I can try it on Windows PC and that might work but I don't ...
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891 views

What are my best options to recover data from a faulty SD micro card (used in an Android cell phone)?

My wife is having troubles while syncronizing the data from the SD micro card of her LG android phone to her portable pc. It keeps remaining stuck forever at a given photo (#21). I tried to access it ...
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64 views

Are SD flash memory cards “secure”?

Regarding SD flash memory cards, SD stands for Secure Digital. Do SD cards or any of its variants (SDHC, SDXC) have any particular security features compared to other types of flash memory cards such ...
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391 views

Partition SD Card?

I want to partition the SD card so that I can use Apps2SD application (on my Android phone, a Samsung GT-i5503). I just would like to know if I can partition my SD card using "Computer Management" in ...
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21 views

Find Text File Data from Raspberry Pi SD Card

The SD card on my Raspberry Pi has become unusable. When the Raspberry Pi was running correctly, it was storing data to a text file. I'm able to read the contents on the SD card via the SD card reader ...
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28 views

What's the best way to store a Mini-SD card?

I just bought two 128GB miniSDXC cards (on sale today on Amazon). One is going in my phone. I figured I could use the other one for a backup of my MP3 & JPGs. Which brings up a problem.... How/...
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49 views

8 GB micro sd-card pretends to be an 16 GB card

Hi guys so i managed to dd a 16 GB micro sd-card on a 8 GB micro sd-card and now the 8 GB card has 12 partitions, the last one with the size of 11.5 GB. this is the partition table: Disk /dev/...
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23 views

OOM kills and swappiness for IoT devices with eMMC and SD storage?

I experience an occasional Out-of-Memory (OOM) kill from the compiler on BeagleBoards, CubieTrucks, etc. They are IoT devices, powered by ARM, generally have 512 MB to 2 GB of RAM, and use 4 or 8 GB ...