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greenhills

Member

Registered: 2009-07-19

Posts: 9

Can't copy large files from DVD

Hi all,

I'm trying to copy a 4.3 GB .tar file from a DVD onto my harddrive, but it will only copy about 1 GB before I get the error

Cannot read: Input/output error

I can copy smaller files just fine from the same DVD and other DVDs, but nothing too large.

Does anyone have any suggestions?

Thank you.

majiq

Member

Registered: 2009-03-06

Posts: 259

Re: Can't copy large files from DVD

My initial guess would be filesystem limitations or a bad spot on the disk. I would suggest trying to reproduce this with another DVD with a large file on it.

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

Website

Re: Can't copy large files from DVD

I would check the integrity of your data on the DVD...

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Got Leenucks? :: Arch: Power in simplicity :: Get Counted! Registered Linux User #392717 :: Blog thingy

greenhills

Member

Registered: 2009-07-19

Posts: 9

Re: Can't copy large files from DVD

I would check the integrity of your data on the DVD...

How is this done? It's happened with other DVDs with large files too.

EDIT: I just checked and it says nothing's wrong.

Last edited by greenhills (2009-07-23 00:20:30)

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: Can't copy large files from DVD

I vote for a bad spot on the dvd too, did you burn the dvds yourself?

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R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K

greenhills

Member

Registered: 2009-07-19

Posts: 9

Re: Can't copy large files from DVD

Yes, I burned them myself.

Can anyone suggest a tool for checking for bad spots? I don't think Brasero's doing it, it takes two seconds and tells me it's all good.

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

Website

Re: Can't copy large files from DVD

Brasero checks immediately after the burn. I presume your DVD is a bit older than one day . If not, you just burnt yourself a coaster.

I know there are some Windows programs to check the integrity of an optical disc, but I don't remember their names (nor do I know something like that for Linux).

I would do a few copy trials, with dd. If you always see it break on the same size and you have plenty of space left, then I think there really is a problem with the data integrity on your DVD. I have done copies with dd from optical media before, and I think you can be pretty sure the data is corrupt if dd can't pull it off.

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Got Leenucks? :: Arch: Power in simplicity :: Get Counted! Registered Linux User #392717 :: Blog thingy