Difficulty: Easy
Correct Answer: FORMAT /C
Explanation:
Introduction / Context:Formatting media in DOS can either trust existing bad-cluster maps or retest all clusters. When verifying media health, technicians may force a full recheck to ensure no latent defects are missed.
Given Data / Assumptions:
Concept / Approach:
FORMAT /C directs DOS to examine clusters that were previously marked bad and recheck the surface, updating the bad-cluster list as needed. Other switches serve different purposes (system transfer, boot area, legacy geometry).
Step-by-Step Solution:
Insert the disk and run: FORMAT drive: /CAllow the utility to scan and retest clusters.Review the final summary for total disk space and bad sectors.If errors persist, retire the media from critical use.Optionally combine with other switches (for example, /U for unconditional) when appropriate.Verification / Alternative check:
Compare a run with and without /C on media with known bad clusters; /C triggers a recheck and may clear falsely marked clusters or confirm genuine defects.
Why Other Options Are Wrong:
a: /B reserves space for system files or boot tracks; not a cluster retest directive.
b: /S copies system files to make the disk bootable; unrelated to cluster checking.
c: /8 formats for 8 sectors per track (legacy); not a testing option.
e: Not applicable because /C is correct.
Common Pitfalls:
Confusing /U (unconditional format) with surface retesting; /U affects UNFORMAT recovery, not the retest behavior itself.
Final Answer:
FORMAT /C
Discussion & Comments