Amazon kindle ebook file type & directory storing them

What's the extension file type of Amazon ebooks?  
Is it .lzw & in which folder of my Windows XP are
they stored?

I've come across ebook that just vanishes, so want
to take a backup.
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Dan CraciunIT ConsultantCommented:
You have a folder under "My documents" called "My Kindle Content".
That is the storage for all Kindle ebooks on your system.

If you want to back them up under a library not under Amazon's control, I suggest Calibre:

go to Kindle/Preferences/General and view/change your content folder.

That should tell you where the files are located currently.
sunhuxAuthor Commented:
I've found the folder, it's
C:\Documents and Settings\Administrator\My Documents\My Kindle Content\

Is there any other files (say an index file) that I need to backup so that if I were
to restore the files to an old PC (that Amazon has no access), I can read the
ebooks from that PC's Kindle?

Below are some of the files in the above folder :
. . .
03/09/2013  12:27 AM             1,118 B0087HW9KW_EBOK.phl
03/09/2013  12:27 AM        47,185,256 B008O7V2BW_EBOK.azw
08/11/2013  07:42 PM             1,119 B008O7V2BW_EBOK.phl
08/11/2013  07:42 PM         1,355,436 B00E5P6R4Y_EBOK.azw
03/01/2012  02:29 AM               953 Pride-and-Prejudice.apnx
03/08/2013  11:13 PM           869,362 Pride-and-Prejudice.azw
03/01/2012  02:29 AM               628 Treasure-Island.apnx
03/08/2013  11:13 PM           633,435 Treasure-Island.azw
              15 File(s)    103,392,197 bytes
               2 Dir(s)   2,519,961,600 bytes free

Btw, in my Win XP's Kindle, I don't have Kindle/Preferences/General
but have the following to change the folder:
Tools / Options / Content ==> Change Folder
Dan CraciunIT ConsultantCommented:
Nope, all the files are there.

Why bother with the Kindle application on a PC? Just use Calibre to manage/read ebooks and you won't have to worry about Amazon.

Calibre happily opens azw (mobi) files... even the ones with DRM, if they're activated on your computer.


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