Unsquashfs exe windows6/9/2023 ![]() ![]() ![]() ![]() ISO 9660 technically has support for POSIX-style file ownership and permissions (the Rock Ridge extensions), but it lacks practical support for compression and deduplication. FAT32 notoriously supports none of those first four benefits listed above. Very low runtime overhead despite the above benefits.Ī burnable live system image needs to conform to the filesystem format required by the media type it’s being used with, either ISO 9660 if it’s an optical disk (because while it could use UDF, almost nobody actually does that), or FAT32 on most USB connected storage devices.Proper support for file ownership, file permissions, extended attributes (needed for example for SELinux).No practical limitations on file sizes (this usually does not matter, but is worth mentioning IMO).Built-in block-level deduplication (any given block is stored only once, and all files that contain a copy of that block just reference that one copy).SquashFS is a highly optimized filesystem image format that provides, among other benefits: There are a couple of important reasons for this, but the big two are space constraints, and requirements from the filesystem itself.
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