The most common and most likely answer to this crossword clue is the 10 letter word DEFRAGMENT
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More clues leading to the result DEFRAGMENT
Buddy explains!
The straight part
We know that "to reorganise files on disk" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to reorganise files on disk = defragment.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DEFRAGMENT mean?
DEFRAGMENT verb- To run a process that collects fragments of files and sorts them into contiguous sections on one or more hard disks or hard disk partitions, thus speeding up file management.