Began the rooting process last night. Best I can tell, with a new device, there's no way to prevent the automatic update, as it happens before there is the opportunity to enable ADB. I neglected to look closely at the version that got automatically installed--turns out it was 2.0.5
Went through verygreen's process first, then was trying to run CM10 from sd card. No luck--simply would not boot at all from sd card. Tried 3 different cards, multiple times reformatting the cards with the hp usb utility and writing the image file with win32diskimager. No success.
Went back, did the factory reset, both from the settings menu (settings-device information-erase & deregister device) as well as by holding the n key while powering up.
Then tried someone0's all-in-one method; parts of it worked, but anything that required su did not.
Went through the reset process then attempted to reroot several times, to no avail.
Wondering if I can reset or reflash the device back to 2.0, 2.0.2, or 2.0.4, then root and install the OTA block.
Or perhaps I'll get lucky and someone with greater technical skills than I will figure out how to root 2.0.5.
Suggestions would be appreciated.
Many thanks to verygreen, someone0, LeapinLar, and others for all the work they've done.
Nook HD 16G
win7 build 7601
sd cards Samsung 8 gb, Ridata 16 gb, Kingston 16 gb (all have worked fine in my Nook Color and Nook Tablet)