[Caveat emptor: adopt/follow this guide at your own risk].
FWIW, here the process I used to install CM11 internally (on emmc*) on my HD+:
Once the HD+ boots up, set up the wifi connectivity and your google account info.
If the Nook fails to boot off SD -- the two most common symptoms of failed SD boot and their likely causes are:
HOW-TO Guides for Installing CyanogenMod on Nook HD+
Installing CM11 Internally on Nook HD+ (this guide)
Building a CM11 SD card with Customized Partition Sizing for HD+
Updating HD+ Internal EMMC to CM11 from CM10.x
FWIW, here the process I used to install CM11 internally (on emmc*) on my HD+:
- Using a disk partition tool (such as MiniTool Partition Wizard Home Edition) create on SD card a Primary FAT32 partition, and set the partition ID type for the partition to 0x0C FAT32 LBA and set its Active flag. Once this is done, the partition should appear as a (read/write accessible) drive under Windows.
- Use an archive file manager such as 7-zip and extract the .img file from verygreen’s emmc-cwm-early3.1.img.gz (http://xdaforums.com/showpost.php?p=49192422&postcount=1)
- Use the archive file manager to extract the files from the .img file and copy them to the SD card: first MLO, then next u-boot.bin, uImage, kernel, ramdisk.cwm.
- Copy to the SD card:
- verygreen’s flashable CWM recovery zip file cwm-recovery-ovation-6.zip (http://xdaforums.com/showpost.php?p=49192422&postcount=1)
- the zip file of CM11 ROM build of your choice – e.g., from http://download.cyanogenmod.org/?device=ovation (see http://www.cyanogenmod.org/blog/cm-11-m4-post-release-items for considerations in choosing nightlies vs. snapshot/stable builds)
- the zip file of the Gapps package corresponding to CM11 – e.g., http://opengapps.org/?api=4.4&variant=nano
- verygreen’s flashable CWM recovery zip file cwm-recovery-ovation-6.zip (http://xdaforums.com/showpost.php?p=49192422&postcount=1)
- Put the SD card into the HD+, and boot from its power-off state.
- [Optional step but highly recommended] Select Backup to backup your HD+ current ROM config (/boot, /recovery, /system, and /data).
- Select Wipe data & factory reset.
- Select install zip from SD card and install flashable CWM recovery zip file.
- Select install zip from SD card and install CM11 zip file.
- Select install zip from SD card and install Gapps zip file.
- Remove SD card and select reboot.
Once the HD+ boots up, set up the wifi connectivity and your google account info.
If the Nook fails to boot off SD -- the two most common symptoms of failed SD boot and their likely causes are:
- The HD+ boots straight to stock -- most likely the boot partition's type and/or flag are not correctly set, or the HD+ cannot find the MLO in the boot partition (make sure that MLO is the very first file to be copied to the freshly made /boot partition).
If the HD+ consistently boots straight to stock in spite of a valid /boot partition and boot files, it's possible that the tablet is one of those HD+ units that have difficulty booting of SD cards, see http://xdaforums.com/showthread.php?t=2288688 for more info and potential remedies.
- The HD+ screen stays dark for seemingly a long time then eventually boots to stock -- most likely the MLO or u-boot.bin are corrupted. When in doubt, compare the size of the two copies of the files in bytes.
HOW-TO Guides for Installing CyanogenMod on Nook HD+
Installing CM11 Internally on Nook HD+ (this guide)
Building a CM11 SD card with Customized Partition Sizing for HD+
Updating HD+ Internal EMMC to CM11 from CM10.x
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