Tetsuo Handa wrote:
Hello. I often create a Live CD. When creating a Live CD, loopback mounted ext3 image files are used. These image files are then compressed so that the ISO image will fit within a CD-R's capacity (i.e. 700MB).
You don't mention what you're using to compress the ext3 image file. If you're using Squashfs then it's much better to zero-fill the blocks rather than use 255, because Squashfs detects zero-filled blocks and stores them sparsely. This not only gets slightly better compression (than a compressed zero-filled block), but reading is also slightly faster.
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