Connecting to Camera, UnErasing Photo (was RE: [NCLUG] Linux Alternatives & Necessities for Home Use)

[Robie Lutsey]

For an excellent and very hands on method of doing what you want see 
this document.(2.7MB PDF warning)
http://www.linux-forensics.com/linuxintro-LEFE-2.0.5.pdf

Earlier chapters are basic, but still very useful, linux background.  I 
found a number of slick tricks tucked away in there.  What you really 
want is chapter 9, though.  That goes through the process of manually 
recovering a .jpg as an example of carving data out of a dd image.  
Naturally, there are easier, automated ways of doing the same, but how 
much fun is that?

One note, this document is getting older, and some things like loopback 
support just aren't a big deal anymore, (the "-o loop" option to mount 
for example).  That just makes life a little easier for us!

Enjoy!
Robie

bsimpson at att.net wrote:

>Rich,
>
>  
>
>>I don't even know what application I used to connect - I plugged the 
>>camera in, and a file browser window popped up with my pictures 
>>displayed in it. From there, I think it would have been a drag & drop 
>>affair to put them in the filesystem. All this is with reference to a 
>>KRUD/Fedora Core 3 system; other distros might have more or less 
>>user-friendliness built in. 
>>    
>>
>
>My FC3 system used to automatically mount a CD or USB memory stick
>and bring up a file browser window, but something changed and it
>no longer does that.  I have to manually mount them.  Not sure how
>to manually mount my digital camera.
>
>  
>
>>I think I was expecting to use KPhoto (?) but never had to open it. 
>>
>>Brian, if you have a camera with "erased" photos on it that you want to 
>>recover, I'm not the best person to ask - I've only been doing this with 
>>linux for about 16 hours. But I know that some cameras have a switch 
>>you can set that tells the camera to act like a USB mass storage device. 
>>If you have this control, or if you can just use a card reader (usually 
>>only ~$20) instead of the camera, you should be able to browse the 
>>camera's card as a mounted drive and see if the file is really gone. 
>>    
>>
>
>I believe my camera already acts a mass storage device.  Under WinXP
>it acts as another drive, and I can transfer images with Win Explorer.
>
>  
>
>>If you're looking at it in the file system and it's just not there, now 
>>you're talking about whether some file recovery application will work, 
>>and I'm not sure what to tell you there. 
>>    
>>
>
>This is probably what I want to do:  adjust the file allocation table
>so the file is restored.
>
>Brian S
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