When a USB memory stick becomes unresponsive and a simple soldering iron repair doesn’t produce positive results then we have another recovery option called a nand read.
This method of recovery is very complex and involves several stages each very dependent on its proceeding stage.
Stage 1 is the removal of the nand chips. The number and style of nand chips varies with manufacturer, the chips must be unsoldered paying attention not to damage the delicate pins and then cleaned in an ultrasonic bath to remove flux residues.
Stage 2 is making dumps of the chip content. The data must be read from each nand chip, to be entered into software. This involves setting correct parameters for dump number, page sizes and any timings unique to the nand chip. This may have to be repeated if too many errors are detected at the end of the reading process and the settings tweaked.
Stage 3 involves reassembly of dumps. Once all the dumps are made they can be entered into software to start the long process of recreating what the microcontroller did when in charge on the USB device. Getting the data to line up within the dumps is a complex task involving a Xor pattern with many parameters to change that unfortunately isn’t automated. Once this process has been completed successfully the integrity of the data is checked and if good copied off... Stage 3 may have to be repeated several times to get good data.
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I lost my data after inadvertently deleting my hard drive instead of my wife’s micro SD card in her phone. This was late at night after putting in some serious hours so I can only assume I was over tired and not really thinking. I right clicked the drive I thought was my wife’s card, it asked if I wanted to format it, I said ok and renamed it. A few seconds passed and I took out the SD card put it in the phone and the photos were still there. It took me a few moments to realise what I had done. When I went to the drive that held ten years work there was nothing there and it was renamed.
I went drip white I could hardly breathe… My wife came in asking what was wrong I explained that I had deleted the hard drive and lost everything not just photos, contracts, books I wrote, manuals for my company, all the history of everything I had ever done.
I quickly Googled data recovery whilst my wife found my friend Jack Daniels, there were a few that came up some saying they were 24 hours, when I rang no answer. I came across R3 Data Recovery and they said they were 24 hours, I rang and a real person answered my call. The chap I spoke to calmed me down, asked what I had done and what I had done after. I had the insight to not try and do anything myself as well as do nothing else to the drive. He told me they have great success and a good track record. I explained to him that right now I had lost anything so any data recovery would be better than none.
I have now had the drive back for a week or so and I have not found any of the work that is missing. I have lost my honeymoon pictures, however I may have these on disc somewhere. I estimate the data recovery is about 85%-90% successful. I know there are things missing but it has allowed me to carry on seamlessly without any major issues. I have as of yet to have really missed something. There was a bit of a glitch with the lead that when I connected the drive to the computer it told me the drive had malfunctioned. They organised a pick up the next day and within three days I had a new lead and the data was there. I think all in all even with the lead issue the returned my data within the ten days they said.
I cannot recommend them highly enough. Do not go for anyone else nor attempt anything yourself just call these guys and leave it with them, They kept me very informed and have done a cracking job I am amazed… they exceeded my expectations, thankfully.
Thank you R3 Data Recovery
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If your hard drive happens to fail, contact our team of experts. Our skilled professionals will be able to reliably recover data on your hard drive and provide industry-leading turnaround times which give you the confidence that's necessary to develop a solid, effective recovery plan.
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