Pogoplog Mobile - contents of default MTD partitions (no replies)

Hello,

The default mtd partition layout for the Pogoplug Mobile is the following:

#cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00200000 00020000 "u-boot"
mtd1: 00300000 00020000 "uImage"
mtd2: 00300000 00020000 "uImage2"
mtd3: 00800000 00020000 "failsafe"
mtd4: 07000000 00020000 "root"

I had a few questions, which hopefully someone can help answer or provide me some tips on finding the answer myself.

I know "root" contains the root filesystem, but how about the other partitions?

Why are there two uImage partition - "uImage" and "uImage2"?
What's in the "failsafe" partition?

I'm looking into booting the rescue system or OpenWRT from NAND and looking for a better understanding of the default MTD partition layout. Thanks