Re: Self-written DVD+Rs that cannot be read...

[Bill Davidsen]

Hugo van der Merwe wrote: I would highly suggest trying to read the DVD's under another OS. There is a Linux kernel bug regarding reading CD/DVD media related to the read-ahead cache. Thanks, not the case though. I know people had problems in WindowsXP with the DVDs I wrote, as well as checking the files myself - I run into bad files as soon as 1/3 into the DVD. (Assuming files were added in sorted order.) dd can fail quite soon as well. BTW, I've noticed dd dumps being smaller than the original .iso - but still all the files are fine (mount and diff -r gives "perfect verification"). This being on CDs. I've not yet successfully verified any DVD. 7 out of 7 checked were bad, and I handed out another 8 which I therefore assume are possibly all bad. I think I will try Verbatim's DVD-R (might that help?), then possibly another brand, then I'll be looking for another DVD writer. (I have a "BTC" writer - cheap cheap. Suppose I might paying for my stinginess now.) Maybe... I have a Pioneer DVR-104 in this system, and a Lit-On LDW-451S in the one next to it, both of which have produced about a hundred backup data disks using cheap DVD-R media of various kinds, as well as a few hundred data CDs and maybe 8-10 audio CD. Other than the fact that I can't find the right media and incantation to burn a DVD which plays in a non-computer, I have no complaints. Someday someone will write a decent documentation on the DVD process instead of on one programs to do one thing which may not be what you want. Since that's not why I got the hardware it's an annoyance not to be able to take DVD presentations with me, but if it ever becomes a requirement before such documentation is written, I'll get a Mac. I doubt that this is a problem with cheap hardware, but if the firmware is up to date it might be. -- bill davidsen <[EMAIL PROTECTED]> CTO TMR Associates, Inc Doing interesting things with small computers since 1979