Failing discs Any solution - how to tolerate Cyclic Redundancy Error

[saptecai]

You know how standalone CD and DVD players are able to ignore data missing on damaged discs and still play them relatively well.

The PC's obviously wants to know exactly the value of a damaged sector of information and mostly chokes and gives a Cyclic redundancy error.

Can I make discs with media content (mp3's divx) that are damaged to have theor errors tolerated during playback.

SO far I have been using CDR/DVDR recovery software to copy the file but it is very very slow.

Is there a media player that would do that on the fly, or a software that would lift the threshold for errors high for DVD units in PC's?

[Sharktooth]

nope coz it all depends on HOW data was written.
however, if the problem is due to scratches on the surface then your data is still there. you only have to polish te surface.
if not, then you're doomed. try recovering the data with some recovery software even using different CD/DVD players.

[squid_80]

If you just want to work around the CRC errors, create an image file from the disc using ImgBurn with "Ignore Read Errors" turned on and both "Software Retries" and "Hardware Retries" set to 0. Then mount the image using daemon tools (or similar) and work from that.

The damage may be too severe to have any hope of recovery though, especially with .avi files.

[setarip_old]

@saptecai

Hi!

Try "ISOPuzzle"...

[saptecai]

@Sharktooth: I understand what you're saying and it makes sense. Is there a way to write disc so when they get errors to be tolerated?:thanks:

CD audio don't give CRC errors when played on PC's but DVD movies sometimes do, don't they? Still standalone DVD players tolerate them (you may see the odd blocking?).

@setarip_old , @squid_80 : Thanks for the software suggestions. I will have a go:thanks:

[squid_80]

CD audio simply doesn't have CRCs. Data discs have an extra layer of error detection/correction. If you want even more protection you'd probably have to use .par files (which would only be useful on a pc) or a custom disc format.

[leeperry]

you can use CDbremse on top of Isobuster, and fluctuate the drive speed when some portion can't be read......it will take forever, but w/ a good drive you can get it all back w/ a bit of luck

[saptecai]

I have so many failing discs (from just sitting, they have hardly been used, some not at all). CD-R more than DVD-R

With 1Tb SATA HDD's being so cheap nowadays I am considering backing up to RAID 1 external enclosures even or long term storage. It's definitely cheaper than Blu-Ray at the mo and I am sure those will fail too at some point.

[Soulhunter]

From my experience with old burned media:

- Slowing down the drives read speed really helps...
- Discs that throw a error at the 1st, 2nd, 3rd try, can sometimes be read flawless at the 5th, 10th, whatever try (so don't give up too fast)

[juhok]

Trying with different drives helps a lot too. I've had discs completely unreadable using drive A but work great with drive B, and some other disc might not work with B but works on A. Also letting the drive cool down before trying bad disc seem to help often but I've not tested this hypothesis so much.

[kempodragon]

One thing that I've found, a DVD burner usually can read discs that a DVD player can't. My burner has no trouble reading and playing disc that my player outright refuses to acknowledge as even existing.

[Sharktooth]

sometimes it's the opposite too.