3 ms·
Just in case someone reading this, anyone know what block-size one should use for ddrescue on a DVD? Sectors are 2kiB, but are grouped into ECC groups of 32kiB
by aidenn0 3y ago
Just in case someone reading this, anyone know what block-size one should use for ddrescue on a DVD? Sectors are 2kiB, but are grouped into ECC groups of 32kiB. Is it possible to read a single sector without error without also reading the entire ECC group without error?
- _wire_ 2y agoI'm ignorant on the topic, but will observe that ultimately a block is a hardware construct for precisely such reasons as error correction. The way you've formed the question, it sounds like the answer will be no. But maybe there's another way of looking at it? This writeup discusses some features of DVD "raw" access (a figure of speech) and an approach to accessing data at lowest level possible with drive logic. https://debugmo.de/2007/07/read-your-dvds-the-raw-way/?tl7 https://debugmo.de/2007/07/read-your-dvds-the-raw-way/?tl7