flashcap

Flashcap

Flashcap is a tool for testing the reported capacity of flash devices.

This works by overwriting the entire device with a sequence derived from the location on the device. It then reads the entire device and verifies the expected values. I expect that it would find the following types of issues:

• Devices that fail when writing before their advertised capacity.
• Devices that pretend to write but do not store the data.
• Devices that write to areas other than the intended area.
• Devices that have bad blocks that return data other than that written.