Making the file system work is one thing: making it work efficiently and robustly in real life is another thing. What are some of the issues involved in managing disks? i. Choosing the size - small blocks are bad for performance, but good for disk space utilization ii. Free space management - using linked list or a bitmap iii. Disk compaction and defragmentation - a fact algorithm for reducing wasteful fragmentation must be implemented such as Vogel's, 1999 iv. Setting up a quota for each user - to prevent users from using up too much disk space i and ii i, ii, and iv ii, iii, and iv ii and