Tag Archive for 'data'

Linux: How to lose data fast with ‘rsync’

Greer’s Third Law: A computer program does what you tell it to do, not what you want it to do.

I’ve been around Linux long enough to know that the fabled Linux command:
rm -Rf *
is dangerous, and I have to say I’ve never lost data by using that one wrong. But there are other, more subtle ways to lose data if you’re not careful, and today I’m going to share a tale of this. Continue reading ‘Linux: How to lose data fast with ‘rsync’’

You do have backups … right?

Backups are important. Yes, we all know that. We’ve heard it before. Just like good passwords can save your (digital) life.

So, how are your backups doing?

dead-hd-2

Exhibit 41 in “things you never want to see”.

Ahem.

Continue reading ‘You do have backups … right?’

How to recover from MD5 mismatch

If any of the following is gibberish to you, it’s better to stop reading. Not everything I post is useful to the general public ;-)

If you’re trying to restore a backup of your Android and you get the error message “MD5 mismatch”, then here’s the solution. I was searching for this and found so much bad information. I feel that the correct information needs more publicity, so here’s my contribution to this.

First, here’s the typical problem that you’d experience:

ClockworkMod Recovery v6.0.4.7
Checking MD5 sums…
MD5 mismatch!

Continue reading ‘How to recover from MD5 mismatch’

Errata: geeky details

Click to enlarge

Click to enlarge

I took a closer look at the images I had found yesterday and I noticed that my story was not entirely correct so I’m posting this to set things straight, rather than rewriting yesterday’s post.

I wrote that there were digits on both halves of the wristband, but the image shows all the digits on just one side. Even better, the digits are readable so I can analyze them all over again. Continue reading ‘Errata: geeky details’

“Listen to the light”

Here’s a silly little blast from the past I felt like sharing. Enjoy :-) (See also this update.)

First, a little background: Timex_Datalink_Model_150Back when I worked for Microsoft, there was often something new and curious coming along. Force-feedback joysticks, for instance. But they also had some really mind-blowing tech partnerships, like the Timex Data Link watch that was released in 1994 – that’s nearly twenty years ago! Continue reading ‘“Listen to the light”’