I am not very experienced using Linux and I have the following situation that cause me some doubts.

I have wrote RaspBian (the RaspBerry linux distribution) on an SD card using Ubuntu dd statment:

sudo dd if=2014-01-07-wheezy-raspbian.img of=/dev/sdb bs=1024

So if now I perform the fdisk -l statment I obtain that I have 2 partitions related to my SD card, that are the followins:

Dispositivo Boot      Start         End      Blocks   Id  System
/dev/sdb1            8192      122879       57344    c  W95 FAT32 (LBA)
/dev/sdb2          122880     5785599     2831360   83  Linux

And now the first doubt: the dd statment create on the SD card two partitions:

1) /dev/sdb1 that is a litle FAT32 partition (what it means (LBA)?) 2) /dev/sdb2 that is a larger Linux ext3 partition

Ok...the doubt is: why it also create to me a FAT32 partition and not only a Linux ext3 partition?

Ok...if I go into my computer resource I can see a device (related to my SD card) into the devices list that contains some RaspBian file, following a screenshot:

And if I see the property of this device I obtain this:

So, looking at the previous screenshot it seems to me that this is the small FAT32 partition, and now I have the followings doubts:

If it is the smallest FAT32 partition, what contains? The RaspBian boot or what?

Why, in the devices list, I have only the FAT32 partition and not also the Linux one (/dev/sdb2), to see it have I to mount it? how?

Tnx