Warning: Kingston Digital MobileLite Wireless Flash Reader can destroy SD card FAT!

Mel Snyder

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Back in February, a poster here recommended this device. I bought it, and fell in love with it, recommended it widely. It enables you to back up your SD cards to a portable hard drive while on the road, without a computer. Or play videos from the hard drive on your iPad or iPhone

Then, yesterday, while at anchor at Cuttyhunk, it struggled to load an SD card full of great sailboat images shot with my NEX-6 and my new 55-210 as sailors across Buzzards Bay enjoyed a perfect 20+ knot wind and gorgeous skies. I had the write protect tab engaged, so after 5 minutes, I stupidly removed it and tried again.

Nada. Oh well, I will load them directly onto my iPad.

But the Camera Connecter got me a "cannot read this device" message. I quickly tried it on my MacBook Pro - unreadable. Popped card back in camera - unreadable - "do you want to format?" NO!

Bad card? Camera falure? I immediately shot images on 2 new cards, a Transcend and a Sandisk (I use only Class 10 cards). Read perfectly on my MacBook Pro, and and my iPad through the Camera Connector. Neither could be read through the MobileLite.

And after attempting to read them through the MobileLite, neither could be read by the iPad, MacBook Pro or NEX-6.

When I got home from my weekend sailing, I loaded Cardrescue for Mac, and it recovered all the files on the card (actually, not just the files lost this weekend, but any that have not been over-written). However, all the rescued files have been downsized to 1600x1020, and the EXIF info is lost:



485d3a8da69f4b7fb970bd86b592d61b.jpg

But at least they aren't a total loss.

What happened?

Apparently, when the MobileLite turns savage, it destroys the file access table on your SD card. Fortunately, CardRescue can recover the files without the FAT.

For those who don't understand FAT, let me explain. When You "erase" or "format" a card, you don't actually destroy the all files on it - you just destroy the information a computer or camera needs to show it where the files are. That's how many politicians and criminals are caught when they mistakenly believe they can destroy evidence on a hard drive, and the Feds come in with a program that restores them. The files are still there until a new file over-writes part or all of the sectors where data from a file is stored.

The MobileLite I own has suddenly begun destroying the file access table of each card inserted into it. If you didn't have the technical knowledge to understand what might have happened, you'd have believed the images lost.

This is s fatal, inexcusable flaw in the design of the product. It's past return to Amazon, and I sure would never trust a replacement from Kingston. Had this occurred on my upcoming month-long EU trip, I would be livid, because I won't have access to a computer for a month. This is why I take a belt-and-suspenders approach to preparing for photographing potentially once-in-a-lifetime events.

The MobileLite worked fabulously right up to the point where it destroyed cards. Perhaps it was one-off event.

But as a paratrooper friend told me, a chute failure is ALWAYS a one-off event, and the customer never reorders.
 
Mel Snyder wrote:

When I got home from my weekend sailing, I loaded Cardrescue for Mac, and it recovered all the files on the card (actually, not just the files lost this weekend, but any that have not been over-written). However, all the rescued files have been downsized to 1600x1020, and the EXIF info is lost:
Again sorry to hear about this. I don't think your recovery software worked very well, as I just a post saying the 1600x1200 jpegs are what Sony stores in the raw files. I would give the PhotoRec tool a try because whenever I've had to do this, PhotoRec recovered everything, although not with the original file names, and I was then able to use exiftools to rename all using the originaldate tag in the restored files exif data. It is a command line tool, but is text menu based, so really simple to use after spending a few minutes with it. Exiftools is all command line, but there is a very clear example on renaming the files with the originaldate tag in the program's help screen. Just keep scrolling until you see the renaming section tpwards the end.

Mac, DOS, Windows, Windows64, Linux, BSDs, and Solaris binaries, GPL and provided at not cost to you.

Thank you
Russell
 
Last edited:
Russell Evans wrote:
Mel Snyder wrote:

When I got home from my weekend sailing, I loaded Cardrescue for Mac, and it recovered all the files on the card (actually, not just the files lost this weekend, but any that have not been over-written). However, all the rescued files have been downsized to 1600x1020, and the EXIF info is lost:
Again sorry to hear about this. I don't think your recovery software worked very well, as I just a post saying the 1600x1200 jpegs are what Sony stores in the raw files. I would give the PhotoRec tool a try because whenever I've had to do this, PhotoRec recovered everything, although not with the original file names, and I was then able to use exiftools to rename all using the originaldate tag in the restored files exif data. It is a command line tool, but is text menu based, so really simple to use after spending a few minutes with it. Exiftools is all command line, but there is a very clear example on renaming the files with the originaldate tag in the program's help screen. Just keep scrolling until you see the renaming section tpwards the end.

Mac, DOS, Windows, Windows64, Linux, BSDs, and Solaris binaries, GPL and provided at not cost to you.

Thank you
Russell
Hey Russell - after I posted those photos, I discovered I had never inserted the registration numbers into the Cardrescue program. Apparently the free version is crippled, but once the registration was entered, I got the full size jpegs and raw files, exif and all the other info - even though the raw files were called TIFs - but opened as ARW files in Lightroom.

I theory, the MobileLite should not be able to kill the FAT on a write-protected SD card, so I will probably take and use it. And the Cardrescue program in Windows and Mac on an SD card
 
Mel Snyder wrote:

I theory, the MobileLite should not be able to kill the FAT on a write-protected SD card, so I will probably take and use it. And the Cardrescue program in Windows and Mac on an SD card
Enabling write-protection on an SD card only tells the card reader to not write to it. If you have a malfunctioning reader, it could easily just ignore the write protection.
 
Mel Snyder wrote:
Russell Evans wrote:
Mel Snyder wrote:

When I got home from my weekend sailing, I loaded Cardrescue for Mac, and it recovered all the files on the card (actually, not just the files lost this weekend, but any that have not been over-written). However, all the rescued files have been downsized to 1600x1020, and the EXIF info is lost:
Again sorry to hear about this. I don't think your recovery software worked very well, as I just a post saying the 1600x1200 jpegs are what Sony stores in the raw files. I would give the PhotoRec tool a try because whenever I've had to do this, PhotoRec recovered everything, although not with the original file names, and I was then able to use exiftools to rename all using the originaldate tag in the restored files exif data. It is a command line tool, but is text menu based, so really simple to use after spending a few minutes with it. Exiftools is all command line, but there is a very clear example on renaming the files with the originaldate tag in the program's help screen. Just keep scrolling until you see the renaming section tpwards the end.

Mac, DOS, Windows, Windows64, Linux, BSDs, and Solaris binaries, GPL and provided at not cost to you.

Thank you
Russell
Hey Russell - after I posted those photos, I discovered I had never inserted the registration numbers into the Cardrescue program. Apparently the free version is crippled, but once the registration was entered, I got the full size jpegs and raw files, exif and all the other info - even though the raw files were called TIFs - but opened as ARW files in Lightroom.

I theory, the MobileLite should not be able to kill the FAT on a write-protected SD card, so I will probably take and use it. And the Cardrescue program in Windows and Mac on an SD card
Some RAW file formats are based on Tiff protocols.

Sorry to hear of your adventure, For a once in a lifetime event/trip I'd just get more cards and if I want to back them up, a laptop/netbook would be my choice.
 
I assume Mel that you meant that the card reader failed to upload the contest to a computer ? How can you be sure that it was the reader at fault , are you certain that you didn't remove the card from the camera while it was still switched on , this can damage files if you are unlucky ?

Why should the card reader which presumably had worked well up to that point suddenly fail ? It is more likely to be a one-off problem with the card itself.
 

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