This command takes an optional device argument. If not specified, and only one device is present, it applies to the single device; if more than one device is present, it must be specified.
This command outputs a human-readable summary of the information held within the Bad Block Table of a device.
RedBoot> nand badblocks summary Device `onboard' has 2048 blocks, of which 2 are factory bad, 2 reserved. 2044 blocks (99%) are OK. RedBoot>