Question - Explain Superblock in UNIX.
Answer -
A SuperBlock is a program that contains records of specific file systems such as the block size, the empty and the filled blocks and their respective counts, the size of the block groups, the disk block map, the size and location of the inode tables, and usage information. There are basically two types of superblocks:
- Default superblock: It is a fixed offset from the beginning of the system’s disk partition.
- Redundant superblock: There are multiple copies of superblocks of a default one and are referenced when the default superblock is affected by a system crash or some errors.