5.6. File System Errors

5.6.1. System Inconsistency

• scandisk
• fsck (file system check)

5.6.2. Journaled File Systems

• Journaled File Systems provide aditional robustness and can be checked for errors faster, especially after a system crash.
• Transaction records or Journals are maintained for any file access activity. The journal is used to facilitate a file system check. Files that are not in use at all, do not need to be checked.

5.6.3. Fragmentation

• Fragmentation (not contiguous on the disk) naturally occurs as files are added, deleted and extended on a system.
• A fragmented disk can degrade the speed of file reads.
• Why is fragmentation somewhat less of a concern with Indexed File Systems, such NTFS or inode based file systems, than it is for Linked File Systems, such as FAT or FAT32?