Re: verify cd burning quality
- From: Vahis <vahis@xxxxxxxxxxx>
- Date: Mon, 12 Dec 2005 08:42:05 +0200
ac wrote:
I have burned an iso image onto a number of cds, from an iso image which had a god md5 after downloading..
Running the cd in various PCs I find that one or two take literally minutes to be read, suggesting either the drive reading it is maybe unable to be effective or the one or two cds have a bad burn. The 'problem' cd/s do eventually get read ok, but others are read much much faster in the same drive.
I would like to identify where the problem lies - cd (burning etc) or the drive read of the cd.
The same disk taking different times in different drives is because of the error correction in reading. There may not be that many errors but the track is harder to follow in a physically different drive.
CD and DVD drives as well as burners have individual characteristics.
For example I have a burner that burns good CD's and DVD's but is quite sensitive in reading older or scratchy disks. Another one reads better but records worse. So let's say I have a audio CD that's been used in a vehicle. I need to read it in this "reader" and copy it on the "burner"
If the result is OK after shorter or longer time, be happy.
How can I belatedly compare or check a burned cd against its original ISO image?
K3b has this feature to compare by calculating md5 on the resulting disk. You just tick that option when you burn. Also Nero compares in Windows, I don't know about the Linux one.
All above goes with (bulk) disks. You find a good batch and afterwards the same brand is not available. You try another one and it may or may not be good.
The R disks in general behave better than the RW ones. I have not tested + and - differences.
Different distros would consume in my case far too many good expensive R disks. So I've stopped using them. I use ISO images for installing.
My basic Suses, 9.3 and 10.0 I have on installation server as installation sources for the same reason. I have only burned the boot.iso disks for installing them.
For these reasons also backing up on writable disks is a pain. I gave it up. You can not be sure if they work. Each and every one shouls be tested to restore. No can do. I'm backing up on USB hard drive.
(suse 10 OS, kde)
Good choises :)
tia
-- Vahis .
- References:
- verify cd burning quality
- From: ac
- verify cd burning quality
- Prev by Date: Re: Boot problem in SuSE 10
- Next by Date: Re: Torrent downloads
- Previous by thread: verify cd burning quality
- Next by thread: Re: verify cd burning quality
- Index(es):
Relevant Pages
|
