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Why is the first drive on the computer ‘C:’ and not ‘A:’?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Feb 11, 2026 · Updated Apr 13, 2026

Back in the day, computers had one (sometimes two) floppy disk drives. A: and B: were reserved for them and old habits die hard.

24
Words

1 min
Read Time

#450
of 500 in Technology

-68%
vs Category Avg

The Short Answer

Back in the day, computers had one (sometimes two) floppy disk drives. A: and B: were reserved for them and old habits die hard.

Analysis

Key Concepts: Back, computers, sometimes

This explanation focuses on back, computers, sometimes and spans 24 words across 2 sentences. At 68% below the average Technology explanation (75 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.

What This Answer Covers

This is a focused, single-point answer that gets directly to the core of the question without detours.

How This Compares in Technology

Ranked #450 of 500 Technology questions by answer depth (top 91%). This is a brief primer — the answer is intentionally short. For questions with a single core mechanism, brevity can actually be a strength.

Frequently Asked Questions

Is there a simple explanation for why the first drive on the computer 'c:' and not 'a:'?

Back in the day, computers had one (sometimes two) floppy disk drives. A: and B: were reserved for them and old habits die hard.

How detailed is this explanation compared to similar Technology questions?

This is a brief answer at 24 words, ranked #450 of 500 Technology questions by depth. The key concepts covered are back, computers, sometimes.

What approach does this answer take to explain the first drive on the computer 'c:' and not 'a:'?

The explanation uses direct explanation across 24 words. It is categorized under Technology and addresses the question through 1 analytical lens.