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The story so far...

  • I was experimenting with Unix's dd program on my Ubuntu laptop, trying to find a quick method to wipe a micro SD card securely.
  • I set dd in motion, came back a few minutes later, and the whole system had crashed.
  • When I try to reboot, I get a screen saying "checking media" and then a notification that the boot has failed.

What I'd like to achieve...

  • There's a modicum of data - a couple of GB - that I'd like to recover if at all possible.
  • Also, I'd like to be able to use the laptop as before this calamity, but without deleting any data.

More information

  • I am able to boot from a USB, but, if I try to re-install Ubuntu, the only option it gives me is to wipe everything on disk at present.
  • dd was only running for long enough to wipe, at most, 100 GB of a 1 TB disk. So there must be some recoverable data, right?
Tim_Stewart
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Tom Hosker
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    MicroSD cards are never called /dev/sda because they are not handled by the sd driver. sda is the first SATA or USB disk. You've wiped your disk. – gronostaj May 20 '20 at 09:31
  • Yes. You're quite right. Is there any hope for the data that was on the disk? As I said, insufficient time passed for all 1TB to be wiped. I was hoping it was just the system files. Is that possible? And, if so, how might I recover the data? – Tom Hosker May 20 '20 at 09:38
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    Please look at links at the top, under the This question already has answers here header. – gronostaj May 20 '20 at 11:00

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