It was originally written for the Levanta Bootable Business Card by Rusty Russell, but is now maintained by Klaus Knopper, the author of Knoppix. cloop is mostly used as a convenient way to compress conventional file systems onto Live CDs.
A compression ratio of about 2.5:1 is common for software. The Knoppix cloop image, for example, is 700MB compressed and around 1.8GB uncompressed.
cloop images contain:
The data blocks are compressed separately; this makes it possible to seek to individual blocks without having to decompress the entire image from the start, but at the cost of slightly reducing the compression ratio. Live CD images typically use a block size of 256k as a compromise between decompression speed and space-efficiency.
Apple uses a similar file format in the compressed variant of its DMG disk images.
Patent Issued for Recording Method, Recording Device, Optical Disc, Optical Disc Manufacturing Method, and Optical Disc Drive Device
Sep 19, 2013; By a News Reporter-Staff News Editor at Computer Weekly News -- A patent by the inventors Fujiwara, Yasuhisa (Osaka, JP); Ueno,...