I have spent two days trying to get two memory cards resurrected. For some reason every time I tried to zero these cards with: sudo dd bs=1M if=/dev/zero of=/dev/sdx I was getting 'device full' when only about 156 megabytes of 8 gigabytes had been written. I've messed about with fdisk, parted, gparted and came pretty close to trying a scraper. I think I have finally traced the problem to a dodgy USB card reader. But like Thomas Edison, who said he didn't fail in his attempts to make a light bulb, but learned 2000 ways not to make a light bulb, I now know far more about parted and disk partitioning under Linux and Windows than I did 2 days ago. There are two morals to this story, which I seem to have to learn and re-learn periodically: 1. Don't trust the hardware if logic is telling you it's faulty. 2. Even if you're tearing your hair out by the roots and close to throwing the computer and peripherals out of the window, you're probably still learning something...even if it doesn't fall into place until the last five minutes. Once you have dismissed the impossible, whatever remains, however improbable, must be the solution. Sherlock Holmes. Mike -- Michael A. Ray Analyst/Programmer Witley, Surrey, South-east UK github username: cromarty raspberrypi.org username: cromarty Ham Radio Call-sign: G4XBF, licensed since 1982 'Entia non sunt multiplicanda praeter necessitatem' - Ockham's razor Raspberry VI: http://www.raspberryvi.org/ NVDA, the best free screen-reader in the world: http://www.nvda-project.org/ =========================================================== The raspberry-vi mailing list Archives: //www.freelists.org/archives/raspberry-vi Administrative contact: <mike.ray@xxxxxxxxxxxxxx> ----------------------------------------------------------- Raspberry Pi and the Raspberry Pi logo are trademarks of the Raspberry Pi Foundation. This list is not affiliated to the Raspberry Pi Foundation and the views and attitudes expressed by the subscribers to this list do not reflect those of the Foundation. Mike Ray, list creator, January 2013