Before these disk operations occur, BFS locks the unwritten blocks into RAM, and makes log entries in the file system journal for each block about to be written.

Disk Utility provides features for creating disk images, RAID, and repairing disks. In the second part of our deep dive, we'll look at those options.

For example, traversing a file system tree from the root node to the file of interest requires jumping from an inode to a directory file (potentially multi-indexed) to the file location.