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Questions tagged [sdhc]

SDHC (Secure Digital High Capacity) is an improved version of the usual SD card.

36 questions
10
votes
2 answers

dd gets slower while reading and writing

user@user-laptop:~$ sudo dd if=sd_backup of=/dev/sdd bs=4M conv=noerror,sync 205520896 bytes (206 MB) copied, 28.564 s, 7.2 MB/s 247463936 bytes (247 MB) copied, 57.1285 s, 4.3 MB/s 260046848 bytes (260 MB) copied, 73.2388 s, 3.6 MB/s 289406976…
Karel
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9
votes
3 answers

Which Allocation Unit Size do I have to choose for my SDHC card?

I'm formatting my SDHC 4GB card before putting an OS on it for my Raspberry Pi. It says "allocation unit size" 32 KB and gives me options of up to 1024 MB. What do I do about that?
TomLawson
  • 91
7
votes
1 answer

fsck error: currently, only 1 or 2 FATs are supported, not 34

Why do I get the fsck error: "currently, only 1 or 2 FATs are supported, not 34?" And what can I do to successfully run fsck? I'm fsck-ing my Transcend 16GB Class-6 SD card. It got corrupted recently (not sure how). I already recovered the data. Now…
Bill Paetzke
  • 675
7
votes
5 answers

SD card failure, can't read superblock

What is wrong with my SD card and is it salvageable? At very least to get the current data off. Information: I have an 8 GB Transcend Class 6 SDHC card that I got for my camera recently. It was working fine until one day out hiking the camera just…
Narcolapser
  • 878
6
votes
4 answers

What to do with a corrupted SD card: reformat it or trash it?

I recovered all the files from my corrupted SD card today. What should I do with it now? Reformat and continue using it or throw it away and buy a new one Here's the details on the card and how it got corrupted, if that matters: Transcend 16 GB…
Bill Paetzke
  • 675
5
votes
1 answer

Are UHS SD Cards backwards compatible with existing readers and other hardware?

I was shopping for a couple of new memory cards for new cameras this year and noticed that there are some SD cards that are now UHS-1 compatible. I wasn't sure what that really meant so I went looking for more info, and found that UHS stands for…
Goyuix
  • 6,607
4
votes
3 answers

I Can Edit SD Card on Windows XP but Not on Windows 7

I have an 8GB SDHC card which I have used to upload pictures onto my Windows XP machine using an SD card reader ("SanDisk Ultra II"). I could also delete pictures and create folders on the card. I recently obtained a new computer that runs Windows 7…
David C
  • 250
4
votes
1 answer

SDHC 4GB - lost data including photographs

For some reason my memory card has lost all of the data on it - probably about 150+ precious photographs. I thought the camera was faulty, but now realise that it must have been the card. My husband has changed the card, and when we have tried to…
Julie
  • 41
4
votes
2 answers

Recover SDHC card used in an SD card reader

A while ago when SDHC cards were fairly new and all the office computers had only SD card readers, I made a 4 GB Class 6 ADATA SDHC unreadable and unformattable by trying to get it to work in SD card readers. Have methods emerged since that time to…
hippietrail
  • 4,605
2
votes
1 answer

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? Which is more standard and more reliable? Is…
iconoclast
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2
votes
2 answers

How do I find out if my laptop will read an SDHC card?

I use an HP Pavilion dv6000 series laptop. Is there a way I can find out whether the card reader on this computer supports SDHC cards and what class?
ymasood
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2
votes
1 answer

How can I access the files on my 16 GB SDHC card?

I own a Nikon camera which I use with a Transcend 16 GB SDHC card. The camera possesses a built-in formatting tool and everything just works, and I am able to take pictures and they are saved to the card. I bought an SDHC card reader which worked…
Aki
  • 223
2
votes
1 answer

SDHC - Superblock issues when partitioning

I have tried with four different SDHC cards. The first set of two were 8 GB and the second set were 32 GB. Using GParted, I tried to partition in the following manner: I tried to make one boot partition of 65 MiB FAT32, and the second to fill the…
DevilCode
  • 123
1
vote
4 answers

How can I recover a Micro SDHC card when I cannot assign it a drive name (i.e. can't mount it)?

I bought a Kingston Digital 16 GB microSDHC Class 10 UHS-1 Memory Card 30MB/s with Adapter (SDC10/16GB), http://www.amazon.com/gp/product/B0036V9AGU?psc=1&redirect=true&ref_=oh_aui_search_detailpage, a little over a year ago, and it suddenly stopped…
Padawan
  • 253
1
vote
3 answers

Moving Chrome OS from USB stick to an SD card

I have been able to install chrome OS on a 4gb flash drive and it boots just fine on my little ASUS eee900A. But I don't to worry about it sticking out of the eee and getting knocked out by accident. And the position of the usb ports on the eee…
tvanover
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