Prologue
This guide is intended to take you through the steps needed to replace your internal nook rom with CM7, gapps, overclock kernel (optional) and clockworkmod recovery 3.0.1.0 all on EMMC. This will work coming from any previous rom (excluding dual boot set ups, not supporting that here), no previous rooting is needed for a new nook, however don't forget to boot stock and register the device before flashing to CM7.
I take no credit for any of the files used in this guide, I'm preserving original posts so thanks should be directed to the respective people.
ALWAYS check the md5 hash for the files you are downloading to make sure you don't have corrupted files. This is a great windows utility to do that: HashCheck Shell Extension
On with the guide:
1) Download a CWM 3.0.1.0 sdcard image from this thread (credit: to cmstlist and DizzyDen). You really only need the 1gb image for this guide, no matter what the size of your card is. A smaller image will burn faster, and when you're done with the guide you can reformat the card anyway.
2) Extract the clockworkmod .img and burn to sdcard using winimage or win32diskimager. While that's burning:
3) Download the latest CM7 nightly (or if you prefer the latest Final or RC for stability) from CyanogenMod Mirror Network - Powered by TDRevolution
4) Download the latest gapps (needed for market/google services) from Downloading GApps...
5) Download ClockworkMod 3.0.1.0 flashable .zip from here (credit: MrMuffin) MD5: d7a550d683e54732bcb55eff24ada704
6) (Optional) Download dalingrin's OC kernel from Index of /dalingrin/kernels. You are looking for the latest date and then "update-CM7-dalingrin-OC-emmc-DATE.zip. (credit: dalingrin, info about the kernel and his kernel thread is here)
7) Once your sdcard is done, copy all those files to the sdcard
8) Power off your nook. Put the sdcard in, and power on, the nook will boot from sdcard into clockworkmod
9) Navigate in CWM using the vol up/down keys, N button to accept, power button to go back. Navigate to mounts/storage, and format SYSTEM, DATA, CACHE
10) Go back and navigate to Install .zip from sdcard/Choose .zip
11) Flash the files in this order:
1. cm7 image
2. gapps
3. (optional) dalingrin kernel
4. clockworkmod .zip
12) Go back to the main menu, remove the sdcard
13) Format the sdcard in your computer as fat (or use another sdcard) and put it back in the nook and then press reboot system. (CM7 requires the use of an sdcard for storage - thanks pmilford for the tip)
I completed all these steps, and now it won't boot into CM7. It will boot back into clockwork if I reformat, but the installation process seems to be failing. Any ideas?