One way to use contiguous allocation of disk and not suffer from holes is to compact the disk every time a file is removed. Since all files are contiguous, copying a file requires a seek and rotational delay to read the file, followed by the transfer at full speed. Writing the file back requires the same work. Assuming a seek time of 5 msec, a rotational delay of 4msec, a transfer rate of 10MB/sec and an average file size of 1MB, how long does it take to read a file into main memory then write it back to the disk at a new location?
