Ext2: Difference between revisions

The '''Second Extended Filesystem''' ('''ext2fs''') was the default filesystem of Linux prior to the advent of the journaling file systems ext3fs and ReiserFS. It has native support for UNIX ownership / access rights, symbolic and hard links and other properties that are native to UNIX. Like HPFS, it tries to minimize head movement by distributing data across the disk. Also, by using "groups", it minimizes the impact of fragmentation. It is another "inode" based system. An ext2fs partition is made up of blocks, which are normally 1K each. The first block (the bootblock) is zero-ed, and all the other blocks are divided into so-called block groups (normally, between 256 and 8192 blocks form a group). Each block group contains: