the back up u got if it was before write noogie image to ur nook directory .. so u saved ur nook ..... i will repeat ... if u got back up from ur nook directly with (1.8 GB size almost) before u write noogie image on ur nook ... so u ok!!!
from that point follow my instructions to recover ur nook:
1- get sd card and write noogie image to it ( dont mess ur hard disk drive ... i do it once
and i got recover all my HDD files
)
2- insert the sd card that on nook and power on ur nook and rooted for ever logo will show as soon as u do ( if ur nook doesnt power on so far then plug ur nook in charger cuz need to charging)
3- connect ur nook to ur pc and will show as a SD card
4- download this program "Roadkil's disk image" (go google search and download)
5- install/open the program and u will see all partitions and all disks on ur pc ... let say u only connected 1 HDD with capacity 500GB then u will find that Disk 0 (500 GB) and Disk 1 (1.89 GB) and Disk 2 (removable) , then choose that disk
"Disk 1 (1.89 GB) " and make sure disk size 1.89 GB
6- choose the image directory from ur pc and then Hit start
7-and after it finish ..... do safely remove and unplug the SD card from ur nook and power on ur nook and it should be working fine