Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I began trying to backup my dvd collection to an external hard drive. I do this my making disk images(.iso) from the dvds. To do this I use disk utility > new image > save as dvd/cd master. Started with some Battlestar Galactica. First 6 disks of season 1 went fine. Next 3 disks of season 2 went fine. First disk of season 2.5 I get an input/output error about 75% through the process. Any ideas?

share|improve this question
up vote 1 down vote accepted

Disc might be spoilt or faulty most probably. Clean the disc, enable any error-correction on your image conversion software, and give it a go again.

share|improve this answer

This could be a problem with the drive, or (more likely) a problem with the DVD. Perhaps there's a scratch on it, or maybe just a smudge. It's tough to say.

If you copy the files directly, you can still play it with VLC.

Also Disk Utility is not your only choice for backing up DVDs. I will point to MactheRipper or Handbrake for other options.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .