I suspect this might be a warranty issue, except for one thing - I haven't figured out how to tell VZW that i've discovered my bad blocks without telling them i've rooted my device.
it happens to everybody who erases data from adb and sprecovery.
It must be a reserved portion of the data partition by VZW...either way, nothing is wrong.
Thank you for the information. I was not sure if the structuring on a memory chip is similar to a hard drive partitioning where the boot may be increased and others decreased to allow for a small amount or the use of some sort of low level format the attempt to recover the bad blocks.
As you mention the SBF may brick it, hypothetically if that happens would that allow for return of the phone without them being able to tell if the warranty was voided? Also if stock is reachable say prior to FRG22D and I attempt to do the OTA is it possible that would fail to install and be another reason for replacement of the handset?