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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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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1answer
95 views

64GB SDHC (_not_ SDXC) — how to get this to work with my computer?

I have here a 64GB Micro SDHC card. It is not labelled as SDXC, its manufacturer has quite clearly labelled it as SDHC. While this is not my supplier, the image at ...
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97 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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1answer
95 views

I disconnected my cellphone while transferring files to its Mini SD card. Now the files aren't there, but I lost the SD disk space

I use Ubuntu 9.10, and the MiniSD card shows as having the space used as if there were files. Baobab (the disk usage analyzer) shows that the card only has 118 MB used (of the 401 Ubuntu claims there ...
3
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1answer
849 views

Enlarge partition on SD card

I have followed Cloning an SD card onto a larger SD card to clone a 2G SD card to a 32G SD card, and the file system is ext4. However, on the 32G SD card I only can see 2G space available. Is there a ...
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6answers
518 views

128 MByte vs. 128 GByte

I recently saw a comparison for 2005 vs. 2014 microSD card: in 2005 there was only max 128 MByte microSD cards, and in 2014, 128 GByte. My question: I'm not 100% sure. Is 128 GByte 1000× bigger than ...
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1answer
80 views

Handheld Terminal SD Card error: the file may be in read-only memory, on a write-protected disk or used by another application

I have a handheld terminal and I have made the terminal connect to the PC using USB cable. Also, SD Card is also in the handheld terminal slot. Till a few days ago, I was reaching the files in SD ...
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56 views

SD Card cant read

Sorry for my bad english.. I tried to increase my internal storage on my phone by participating my SD Card..So i use MiniTool Partition Home Edition n then i create a partition on my sd card an ...
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2answers
130 views

Refresh SD Cards for Long term storage for video files?

I have a large collection of video files most of them in mp4 format. I currently store them in SD Cards. Once I finish filling a SD Card I lock it and never use it again unless I need to read the ...
10
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1answer
19k views

On Windows 8, particularly on tablets with a permanently inserted micro SD card, is there a universal way to treat the card as a non-removable drive?

I have a Windows 8.1 tablet, a Surface Pro, and I have a micro SD card that is permanently inserted. I use it to store media files like music and video. Windows, recognizing that it is a removable ...
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2answers
198 views

Is it worth installing applications to removable flash media on Windows 7?

Without the funds to buy a SSD for my soon to arrive laptop, and the knowledge that Visual Studio 2010 can be quite slow at times on a normal hard disk, I was trying to come up with possible solutions ...
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54 views

Optimal Environment for Secondary Storage [closed]

What's the best temperature/light/humidity exposure for secondary storage (USB/Flash Drives/SSDs), to mitigate the probability of data loss over time? I'm using SD cards to backup data and would ...
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0answers
339 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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0answers
626 views

Cannot format micro SD Card in mac OSX 10.9

I tried everything but I cannot format it. When opening the disk utilities I get 2 partitions, one which is greyed out. When trying to format the first one it says "couldn't unmount disk". When ...
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0answers
753 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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0answers
164 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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3answers
4k views

Is it possible to get back data from a Micro SD which is unresponsive?

I have a 2 GB Micro SD card. It was working very fine before few months ago and when I changed the phone I got a new one with that so I didn't use my Old one for a while. But few days ago I need some ...
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4answers
103 views

Reiser4: completely disable journaling

How can journaling be completely disabled in a Reiser4 filesystem? I don't see relevant options in mkfs.reiser4, nor in documentations. The goal is to fit the FS into an SD card, where no journal is ...
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3answers
3k views

Mounting a multi-partition disk image in Linux

I downloaded an raw SD card image that has two partitions. It caused some file system errors when I tried to dd it directly into an SD card. I am not sure if the card is defective or the image. Is ...
3
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6answers
18k views

IOCTL call error when trying to format an SD card

Found an SD card (1GB) lying around. Thought I might pop that into my card reader and see if anything is on it. Nothing. There isn't even a file system on it. I right-click and go "format" but ...
2
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4answers
3k views

Is it possible that an SD card has 100% bad sectors?

I have an SD card which have been used in a photo camera for some months, and it's been working perfectly fine until today. It failed when we were just browsing pictures in the camera screen (so it ...
5
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1answer
2k views

MicroSD card getting corrupted for no good reason

I recently bought an MicroSD card online. It's a Sandisk 16GB class 2. However, it has a nasty problem. Every time I fill it with my data, the fat tables get corrupted. I've tried reformatting it, ...
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5answers
5k views

How do I format a microsd card that is not recognized by any computer … Windows or Linux?

How do I format a microsd card that is not recognized by any computer ... Windows or Linux? I don't think its bad because it was working then I tried to create an ubuntu remix bootup drive which I ...
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1answer
56 views

How to automate copying files from external memory?

I'm looking for an efficient way to copy pictures from SD card to HDD. I'm using adobe suite for editing, and I don't want to "clutter" my PC with otherwise useless software (like Picassa). It would ...
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3answers
3k views

How to repair an SD card which shows incorrect size?

I've a Transcend SD card for 16 GB and am using it in my smartphone. One day I've discovered that the smartphone recognize it as 6 GB only. I've tried to find the solution to set the correct ...
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1answer
175 views

How to extract stuck dummy SD card

This is going to sound stupid, but I put in the dummy SD card in the wrong way and now it's stuck. How do I get it out without disassembling the PC? I have a Lenovo Y510p.
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1answer
201 views

Messed up my SD card something awful. Cannot format, reporting bad sectors, bad partitions.. what can I use to repair?

So, long story short - I created an image of my 16GB SD card used for my Raspberry Pi. I bought a 32GB SD card, wrote the image on it and it is now totally bricked. The SD card is brand new, just ...
0
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1answer
28 views

Camera memory card full but cannot read or download files

I've got a CanonSDC-32M card that reads full in my camera but I can only view a dozen or so pictures.Tried it in my laptop and the same result.How could I go about downloading my files or recovering ...
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0answers
90 views

How to boot from SD Card with GRUB2 being on another device?

I want to install some OS on SD card (i.e. Chromium OS), but my laptop doesn't support booting from SD slot. Thus, I decide to add static entry for my specific SD card to GRUB2 menu. And I can't ...
52
votes
6answers
71k views

What's the life expectancy of an SD card?

I have some SD cards that I use. Is there a limit to how many times I can write over them? If I leave information on a card, is there anything that can cause it to lose this information eventually ...
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0answers
35 views

Does GRUB2 support dynamic menu entries for removable external storage?

I want to boot my laptop from different kinds of external media, but my BIOS doesn't detect all of them as bootable devices, i.e. SD Cards. I don't want to manually create menu entry each time I ...
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5answers
13k views

Choice of filesystem for GNU/Linux on an SD card

I have am embedded ARM-based system running on an SD card. It's currently Debian GNU/Linux using ext3 as filesystem. As I'm about to reinstall the system, I started wondering about changing to a more ...
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2answers
17k views

How do you format a 2GB SD card to FAT32? (Preferably with Disk Utility)

I've been looking around for a way to do this for a while, but haven't been able to find the answer. I need to format my 2GB SD card to FAT-32, but I don't see the option in Disk Utility. If I ...
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1answer
223 views

Micro SD impossible to modify (write or format)

Recently i had problems with my SD card used for my android device, basically i cannot modify it (write or format). Only read it, if i try format or write, any time that connect and fisconnect from ...
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0answers
35 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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169 views

Windows won't let me acces a write protected sd card

I have a micro sd card that I used to use in my old Nokia phone. It worked fine in it. I got an adapter and I'de like to copy the files from it to my computer. When i try to open it in my file manager ...
2
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1answer
163 views

One SD card transfers file to PC faster than another one

I have several Sandisk SD cards all rated Class 10. One card transfer files to my computer faster than the others. Specifically I had taken several pictures and used a different card each day. One ...
7
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1answer
2k views

Is flash storage affected by magnetic fields?

I have several SD cards and USB flash drives that are often laying around my work space. Do I have to be careful to keep magnets away from them? (This paranoia is showing my age - I remember needing ...
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0answers
124 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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votes
1answer
44 views

Sd Card Reader Not Working after first time use

Last week I got an SD Card Reader to enable me to download my photos from my camera as I can't do it direct from my camera anymore. It worked fine the first time. Then I safely ejected it and the ...
0
votes
1answer
506 views

How do I repair an SD card whose partition format cannot be recognized?

I have a 2GB SD card that was reportedly unreadable on several digital cameras and computers, and I need to get data from it. When I put it in my Mac using a card reader and check Disk Utility or use ...
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vote
1answer
117 views

How does 200x or 300x in relation to an SD card differ from the class rating?

I've always understood "class 10" (or whatever) to refer to the speed of an SD (or SDHC) card, but apparently ratings like 200x or 300x also refer to speed. How do the two rating systems differ? ...
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0answers
204 views

How to fix micro SD card

I have a 16 GB micro SD card in my android smartphone, and lately it has been acting funny. When I attempted to view the files on my computer (Macbook pro OS 10.9) using a USB adapter, it did not show ...
0
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1answer
117 views

When formatting an SD card, can you set a custom allocation unit size?

I have an SD card that will only store files of 512, 1024, 2048 and 4096 KB in size. I wanted to set the allocation unit size to 512KB, but the maximum allowed in Windows is 64KB. Can I set this ...
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1answer
246 views

Undetectable SD card

I've had some weird stuff going on with my phone SD card so I decided to format it. Right at the 100% of formatting the message box with "Windows can't format this drive" popped up. Now the card is ...
3
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2answers
31k views

Disable write-protection on Micro SD

My task today is to open up and copy some files to 700 brand new micro SD cards. As I get going on this task I am finding that some of the Micro SD cards are telling me "sorry this drive is write ...
9
votes
2answers
2k views

How to delete files from my indestructable memory card?

A week ago I started getting intermittent IO errors accessing the SD card on my rooted Evo 4g. I eventually plugged it into my windows machine and tried to format it. It appeared to work, but when I ...
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0answers
41 views

Worm memory card or pendrive

Do you know if exists a WORM Usb / Flash / SD memory? I want a write once memory not switchable (I can not delete file anyway). I found a Sandisk WORM SD card, but seems out of production...
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0answers
61 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 ...
26
votes
7answers
53k views

How to access an SD card from a virtual machine?

I want to format an SD card from my Linux virtual machine. I have a built-in SD card reader in my laptop. I tried using VirtualBox and VMware Player and installed Ubuntu 10.04 guest. None of them are ...