Tag Archives: Memory

SDXC: Recovering 64GB and 128GB Memory Cards

SSD Data Recovery
by Schill

Storage is getting cheaper, smaller while offering higher capacity every year. 64 GB memory cards are extremely common in today’s smartphones, digital cameras, tablets and media players. Due to their sheer capacity, a single failure can cause a local catastrophe with that much information being gone.

Fortunately, the market offers numerous data recovery tools that can help you get your data back. But there is something about these cards you should know before you reach for a data recovery tool.

Flash Chips: Riddled with Defects
Can you believe you can buy the whole 64 gigabytes of fast, high-quality solid-state memory for as little as $ 20, or does it sound too good to be true? Why is an SSD drive of said capacity three to four times as expensive as a much smaller SD card with similar capacity? Isn’t it using exactly the same type of memory, just in a different shell?

In fact, you can’t really buy 64 gigs of high-quality flash memory for under $ 20, and there is a good reason why SSD drives are that much more expensive compared to SD or micro SD cards. The answer is buried in the question itself. Why you can buy a 64 GB micro SDXC memory card off Amazon for not much more than $ 20, the actual flash memory the manufacturer puts in these cards is of a completely different quality compared to that of a typical SSD drive.

So how exactly are manufacturers able to achieve these unbelievably low memory prices? They do smart tricks to make the memory card appear as 64 GB of contiguous space while in fact the actual chip is riddled with defects.

Each memory card employs a tiny microcontroller that maps flash cells to logical addresses. The memory chips are manufactured with abundant capacity. During the manufacture, the chip is tested for defects. Unreadable blocks are simply mapped out and become non-addressable and inaccessible from the outside. Bingo! We’ve just turned an imperfect chip into a perfectly usable memory card. These tricks are nothing shoddy; they are used by all SD card manufacturers, and they are part of the published SD standard. If not for these tricks, SD memory would probably cost the same (or more) as today’s SSD drives.

Now when you know the truth about today’s flash chips… can you trust them your data? In fact, you can. Granted, SD cards can sustain a much more limited number of write cycles compared to an SSD drive. When one or more data blocks reach their end of life, the built-in microcontroller of said SD card is supposed to take them out of circulation and assign their logical address to another (working) cell. But what if that cell contained some system information such as a part of a file system? If this is the case, the memory card becomes corrupted, and you’ll need to use special tools to extract information from that card.

Recovering Data from SD Cards
Luckily, we have a large number of data recovery tools available on the market that claim to recover the entire content of your memory card. But were they really tested with any of those memory cards in their compatibility lists, or do developers simply assume the recovery will work based on the same principle as traditional magnetic media? In fact, I’ve seen both and in between. Some products can recover all types of SD cards as they claimed, some other tools can’t deal with SD cards at all, while some other tools can only recover SD cards up to 32 GB.

Wait a minute… Why the 32 GB limitation? Why some of the tools can recover 32 GB cards, but fail miserably when reading a 64 GB one? Should the tool either work or not? The reality is more complex than the numbers. While SD memory cards up to and including 32 GB conform to the SDHC standard, larger SD cards (64 and 128 GB) conform to a different standard called SDXC.

Recovering SD, SDHC and SDXC Memory Cards: Is There a Difference?
There is in fact a big difference between smaller (up to and including 32 GB) and larger (64 GB and up) SD cards. The former conform to the SDHC standard, while the latter use the newer SDXC standard.

For you as a user this can mean two things.

First, if you are using a 64 GB memory card, make sure that both your portable device and your computer’s SD card reader advertise support for SDXC cards (or simply put, they explicitly state support for 64 GB SD cards). If your card reader is old and can only support SDHC cards, you won’t be getting anything but errors if you try to read that card with your computer.
Second, SDXC cards are formatted with a different file system. Let me explain. When SD cards initially appeared, they used FAT32 as a file system. FAT32 was good enough in the old days. However, this file system has inherent limitations, restricting maximum file size to 4 GB. Just a few years ago this would be a laughable limitation. Today, a typical HD video will already run you more than said 4 GB. If you try to save a large file onto a 32 GB memory card (formatted with FAT32), the write operation will fail.
This is why the SD consortium decided to use a different file system for the new generation of SD cards. 64 Gb, 128 GB and larger SD cards come formatted with exFAT.

exFAT is a new file system developed by Microsoft. exFAT is based loosely on the original FAT32. However, exFAT does not have the limitations of the older FAT/FAT32. exFAT is extensively used in portable electronic devices due to its lightweight design. This was one of the reasons exFAT was selected by the SD consortium as a standard file system for the SDXC format.

Are there downsides to exFAT? There’s one, but it’s a major one. While exFAT is designed and owned by Microsoft, it’s not free. Microsoft requires manufacturers pay licensing fees for using exFAT in their devices. As a result, this has become a limiting factor for many portable electronic devices, especially inexpensive ones. This is one of the reasons why you can use 64 GB SD cards in some devices but not in others.

As a result, when recovering data from a 64 GB SD card, you’ll need two things:

An SD card reader supporting SDXC (or stating explicitly that it can read 64 GB SD cards);
A data recovery tool that supports exFAT;
Not all data recovery tools can support exFAT because of the restrictive licensing model employed by Microsoft. Even if a tool advertises support for “all types of memory cards”, it may or may not support exFAT. One of the tools known to support SDXC memory cards and exFAT file systems is Hetman Partition Recovery.

But I’ve Just Bought a 64 GB SDHC Card!
Sigh. This chapter is probably the most disturbing part of this article. Every other week, we receive an email from a customer describing a typical situation. Because there are so many reports, and because they all describe the same thing, let me just summarize it below.

A guy buys a 64 GB SD card for a price that’s significantly below the market. When the memory card arrives, he tests it in his computer, discovering 64 gigabytes of usable capacity. Suspecting that 64 GB of flash memory for under $ 5 could be a scam, the guy tests the card by writing some data. The writes are extremely slow (3-7 MB/s), so testing the entire capacity would literally take the whole day. He writes some 1-4 GB of data and reads it back. All seems fine, so the guy formats the card and puts it into a phone, MP3 player, digital camera, or whatever portable device he bought it for.

Day after day, week after week the card is filling up with data. Pictures, music and videos are saved onto that memory card. 8 gigs, 16 gigs, 32 gigs, 64 gigs – the writes keep going, the memory card seems to be holding well. Then all of a sudden a photo won’t show in a viewer, an MP3 file won’t play, a video won’t show up. The guy takes the card out and connects it to a PC in an attempt to save the rest of the data. But… oops! There are no photos, music or videos on that card, just garbage.

It is this moment the guy seeks for help and writes us an email. Sadly, in situations such as the one I described our hands are tied: that memory card was a fake. In fact, the “deal” advertises a 64 GB micro SD card for only $ 4.79. Yes, it’s under five bucks for a 64 GB memory card. The description is Pidgin English and reads something like this: “New 64 GB Class 10 Micro SD HC Memory Card with Adapter Fast USA Shipping Dependable memory card for your favorite photos, videos, apps, and games Easily transfer files between phone, tablet and camera” blah, blah, blah.

Remember: if it seems too good to be true, it’s probably not true. See that “Micro SD HC” designation? It’s a dead giveaway. You can’t buy 64 gigs of memory for $ 5. And, THERE ARE NO 64 GB SDHC CARDS, period. The SD standard dictates that all SD cards with capacities higher than 32 GB are made to conform to the newer SDXC standard. If you buy this card, you won’t be getting anything but a fake.

Ditto. Do not buy these. Remember how the packaging looks, and ignore deals that seem too good to be true.

Hetman Software
Website: hetmanrecovery.com
E-mail: support_en@hetmanrecovery.com

Why external hard drive and memory stick recovery isn’t for the amateur computer Buffs

You might be tempted to try your hand at doing own memory stick recovery. But, trying to recover lost data on your own is not the best option for you to recover your files. Here are five reasons why you should contact a professional to get that data off a memory stick and have a pro offer reliable hard drive recovery in the UK. This is because a computer user may make a rookie mistake of trying to load software on a non-functioning external hard drive. This is why it is best to ask a professional to perform external hard drive recovery before all the data on a drive is irretrievable. By not touching any data storage devices or malfunctioning hard drive, computer owners may increase their chances of being able to retrieve important files.

Without having a professional oversee the repair, a homeowner may cause more damage to a hard drive or a memory stick. Did you know there are a number of fragile components on a hard drive or inside an external hard drive? Other mistakes that a person commonly makes are that they reformat a failed drive or try partitioning a failed hard drive. Dropping a hard drive may also lead to the need for hard drive recovery UK. However, some company experts or individuals may be hesitant to call a professional company to restore accidently erased or corrupted data because they believe the data recovery service is expensive.

What is the best way to preserve data so memory stick recovery is not so Expensive?

Is cloud services backup an option for laptops, desktops, flash drives, networks, and stand-alone applications? Some larger companies may opt to use cloud backup as an alternate source of data backup. Cloud security is vital for your company’s operations. But, did you know that some companies that provide cloud services may not always provide clear rules about their responsibility or the security measures that they do provide clients. This may leave some with questions about who manages privacy. According to a survey by AlgoSec during a RSA conference this year, only 33 percent of businesses were confident that their third party providers would provide adequate protection to keep their sensitive data safe. Eleven percent of organisations said they do not trust their third party provider to provide the highest security.

What do businesses feel is the great hurdle towards feeling confident that their sensitive data is safe? A 2/3 majority said that manual processes, not being able to fully view security procedures in place, and poor changes in management practices were the greatest challenges with having third party’s manage network security devices. Another 20 percent said poor communications led to problems. Poor communication in itself is a problem that has increased 80 percent in the last year. In the end, these mistakes created consequences for organisations and 80 percent experienced network or application outages as a result of changes. This also increase the need for these organisations to need data recovery services. While more businesses may decide to move sensitive files and information to an off-site location for better privacy and as a safeguard for customers, the need for data recovery and recovering information off hard drives, external hard drives and memory sticks will still be needed for years to come. This is why computer data recovery is a stable and growing field and security for sensitive information will not ever fade away with the threat of hackers stealing valuable information and out of change processes corrupting much needed data. This is why security and the need for data recovery go hand-in-hand.

Staines Data Recovery has been helping customers all over the UK recover from data disasters, such as Raid 0, Raid 1 and Raid 5 server failures from manufacturers such as Dell, Microsoft, HP, Compaq, IBM, and more for years. Our rapid raid data recovery knowledge is second to none and we believe we have the best Raid 5 experts in the UK. We offer a free diagnosis and no obligation quote. For more information on how we can assist you, contact us at: www.stainesdatarecovery.co.uk.

How to Recover Files from Memory Card?

How To Recover Deleted Files From Memory Card?

How To Recover Data From Hard Disk?

How To Recover Data From Pendrive?

How To Recover Images And Videos From Digital Camera?

How To Recover Music From iPod?

Above mentioned problems are asked different users and are totally different but, the matter mentioned in them is same. All these are related to the issue of data loss from storage devices. Various types of storage devices are available in market, which are used to store digital information like images, sound files, video files, documents, etc. You can choose external hard drives, you can choose internal hard drives, you can choose pen drives, you can choose memory cards etc. Hard drives are used to store information in very large volumes. You can store information upto Terabytes (TBs) in them while Pen drives and Memory cards are used to store information in small volumes. Among these storage devices, Memory cards are the electronic flash storage devices. They are portable, they are small in size and they store digital information. They can be used in different electronic devices like digital cameras, mobile phones, cameras, PSPs, laptops, etc but, they are used mostly in mobile phones and digital cameras, they are of different types like memory stick duo, memory stick pro duo, M2, mini SD, micro SD, etc, they are available in different sizes; 1GB, 2GB, 4GB, 8GB, 16GB, etc, they can store any type of digital data like videos, documents, mp3s, audio files, mp4s etc. But, like the other storage devices, they also get corrupted due to different reasons like Virus infections, Trojan attacks, Rough usage, Human mistakes, Abrupt Removals, Improper ejections, Bad Media, etc. When they get corrupted, their entire database become inaccessible and you face different errors like, “memory card is corrupted”, “this storage device is corrupted”, “you cannot use this storage device”, “device media is corrupted”, “please insert the memory card” etc. In such situations of corruption, if you wish to access the database then, you get the requirement to recover files from memory card. There many ordinary tools to recover files from memory card but, if you choose Hard Drive Data Recovery software then, you get many benefits. With the help of this software, you can Recover Deleted Files from USB storage devices like memory cards, pen drives, hard drives (internal as well as external), etc. You can recover limitless data from storage devices with it. It supports all kinds of memory cards, so you can choose any type of memory card for repairing. You can also repair iPod data with it.

Different tools that successfully solve the operations associated with them are developed by this company. SQL Recovery, Hard Drive Data Recovery, Access Recovery are some of the examples. The Hard Drive Data Recovery software of this company can recover files from memory card successfully.