On 15 March 2006 00:00, Joseph wrote: > Is there any limitation in using "dd" to generate backup of DVD (dvd is > 4.7, unencrypted)?
There is not. > > If I use: > dd if=/dev/dvd of=backup.iso First of all, I would add the "bs" option to increase the buffer and therefore speed. Something like: dd bs=100000 if=/dev/dvd of=backup.iso > I only get about 2Gb file and it stops or freezes, the disk is bout > 4.3Gb That would indicate read errors. Is the dvd scratched or dirty? Wash it with lukewarm water and dishwasher liquid and try again. Also: You have a iso like my.iso that you have burnt to a dvd. Now you read it back to back.iso and compare checksums to make sure the dvd has been burnt correctly, you will almost always get an error. Reason is that dd reads a couple of bytes of trailing garbadge back. :-( Uwe -- Why do consumers keep buying products they will live to curse? -- gentoo-user@gentoo.org mailing list
