[Nook Color General] rtod4edw:
Dual boot CM7 primary / NC stock 1.2 w root altImg...

Started the weekend with building a CWM Recovery SD.

That was a process that had its ups & downs too.

Used this process:

Get CWM http://mrm3.net/nook-color-updated-clockwork-recovery-bootable-sd/

Clockwork Recovery v3.2.0.1-For new blue dot Nook Colors and Old Nooks. Thanks to eyeballer

1gb

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Use win32diskimager to flash to SD card. Use HP Format Tool to return SD card to original size.

0) Format SD card to FAT32 - Use HP Format Tool

1) Used 1 GB Clockwork Recovery v3.2.0.1, 1gb_clockwork-3.2.0.1-eyeballer.zip. Unzipped in to folder - ..\downloads\NookColor\1gb_clockwork-3.2.0.1 as

1gb_clockwork-3.2.0.1-eyeballer.img

This CWM Recovery has splash logo of Skull & Cross Bones

2) Use win32diskimager to write bootable image; Open prgram from folder, \downloads\NookColor\Win32DiskImager and click on Win32DiskImager

a) Image File field,browser for image in #1, select image, & click save.

b) Device drop down, should already have your SD drive letter or you may have to select it if you have more tthan one. (Refresh button - if you need to switch SD cards)

c) Click Write & confirm your are going to write and want to continue.

*** If you get an error about the size the SD Card needs to be reformated ***

*** Use HP Format Tool to return SD card to original size. ***

*** After reformating SD Card - restart tesp #2 ***

*** Did this twice on 1Gb & 2GB SD to make sure I will always have a backup ***

3) SD card now has label BOOT and when you display properties, Used space is 4.44 MB and 893 MB Free space.

4) Put in Nook Color and power on to see splash logo of Skull & Cross Bones then Recovery Menu.

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Then some how playing around I got to where eMMc would only boot CWM Recovery :eek:. I had create 2 CWM Recvery SD's - 1 GB & 2 GB, there was nothing to loose by starting over & follow the OP's original instructions plus the additional suggestions added since.

~

0) started with CWR-removal-rootsafe.zip and instructions here http://www.reddit.com/r/nookcolor/comments/fk3gl/stuck_in_cwm_recovery/ and it directed me to here; http://xdaforums.com/showthread.php?t=914690&highlight=cwr-removal

CWR-removal-rootsafe.zip

You want the 4th link. CWR removal (safe for root)

You just flash it like normal using CWM and when you reboot it'll be gone.

This won't affect anything but your /boot so your actual system will remain unchanged.

- no more CWM Recovery boot but, it really didn't do anything else either.

1) Put CMW Recovery SD with all zips into NC & boot.

2) Boot into CWM on SD. From Recovery menu go to the "Install zip from sd card" then "Choose zip from sd card" Select prep.dualboot.zip.

3) Then redo the choose zip Select your downloaded 1.2 Zip. It should be called "update_nc_stock_1.2_keepcwm.zip" Install zip from SD that. Now wait for it to install. Reboot your Nook. It will boot and will ask you to setup the Nook. Set it up.. After setting up, boot back into CWM using your sd card.

update_nc_stock_1.2_keepcwm.zip

4) Now Choose the zip from sd again, but select ManualNooter. That will take one minute to flash. Reboot again. Make sure your root is setup. To confirm, download an app from the market. Any app like ROM Manger which required root and will flash CWM Recovery to eMMc. Makes the rest of the process even easier too.

manualnooter-4-6-16.zip

5) Then from ROM Manager flash the Froyo to dual boot file in earlier post. This file copies your primary o/s partition to the 2nd o/s partition, and names the files the way cm7 dual boot will look for them.

froyo-to-dual-boot-flashable-uAlt.v0.2.zip

- froyo to dual boot (this copies the main o/s partition to the newly created partition, and if you use the one I posted, copies the kernal (uimage) and Ramdisk to AltImg and AltRam (instead of uFImg and uAltRam). Note, if you want your B&N Froyo to be rooted, you need to do so BEFORE running this .zip as the O/p describes, however it is possible to flash this w/o rooting the B&N / Froyo.

6) Then follow the steps to install cm7 on your primary partition (wipe system/data etc) to erase the original B&N, and flash the cm7 nightly and cm7 gapps.

Mounts+Storage, and wipe system+data+cache. Now choose zip again, but this time pick CM7 (I used cm_encore_full-140.zip) then GAPPS. Then anything else,

cm_encore_full-140.zip

gapps-gb-20110613-signed.zip

After that installed the OC kernel, download Nook Tweaks from the market.

Using the tweeks set the step5 CPU to 1300 and then under CM7 setting => performance => CPU settings => Max frequency to 1300

7) I didn't falsh the multi boot - multi-uboot-v0.3.zip

The uboot that the o/p provides apparently will boot directly to the dual boot partition when the N button is held down (and it looks for uFImage instead of uAltImg). BUT CM7 nightly replaces the uboot.bin with the Fattire one mentioned above. If you use the dual boot file multi-uboot-v0.3.zip, it works with the CM7 uboot.

If you use the o/p's, you will need to flash his uboot.bin AFTER flashing cm7, and I think you will need to reflash everytime you update the cm7 with a nightly.

*** the CM7 includes the ability to dual boot by select the altImg on th eMMc when you hold the N button is held down " loadiing boot menu ". Toggle to the uAltImg / uAltRam using "Vol -" then Boot Now. This brings up NC 1.2 (rooted) with out having to remember to re-falsh the multi boot after CM7 updates. ***

very happy :D