Answer by hobbs for Why can't we write over a CD/DVD after it's been...
Writable discs contain something called a "pre-groove wobble", as well as physical addressing information called the "ATIP" (CD-R), "ADIP" (DVD+R/DVD+RW/BD-R/BD-RE), or "land pre-pits" (DVD-R/DVD-RW) —...
View ArticleAnswer by supercat for Why can't we write over a CD/DVD after it's been...
It would probably not be overly difficult to have firmware overwrite a portion of the disk so that it could no longer be read via ordinary means (if one wanted to destroy an entire disk, physical...
View ArticleAnswer by bot47 for Why can't we write over a CD/DVD after it's been...
This actually exists and is called smart erase. It is Lite-On proprietary and I have never seen anyone use this. With SmartErase users can erase the data on DVD±R (DL) and CD-R discs that contain...
View ArticleAnswer by mckenzm for Why can't we write over a CD/DVD after it's been...
If your intent is to destructively erase data, then yes this is possible. But there are easier and faster ways. shredding, burning, melting, solvents.There simply has not been the demand to allow it,...
View ArticleAnswer by Hennes for Why can't we write over a CD/DVD after it's been...
I understand that read-only mode prevents further writes, but can't a burner just ignore that and burn over the original data anyway?Yes, if you modify the firmware on the burner then you could do...
View ArticleWhy can't we write over a CD/DVD after it's been burned/finalized?
I was wondering why CD/DVD burners can't just overwrite a CD or DVD after it's been finalized and set to read-only mode. I understand that read-only mode prevents further writes, but can't a burner...
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