Why is your Windows 11 drive C: and not A:? Blame floppy disks nobody has used in decades, and Windows doesn’t even really need the letter

windowslatest.com Nov 15, 2026

Why is your Windows 11 drive C: and not A:? Blame floppy disks nobody has used in decades, and Windows doesn’t even really need the letter

Curated by Shubham · TechCapsules · Nov 15, 2026

AI-summarised brief · reviewed before publication

Windows 11 still labels the primary storage volume “C:” because the drive‑letter scheme originates from CP/M and was cemented by MS‑DOS on early IBM PCs. CP/M assigned letters A‑P to possible disks; IBM’s first PCs used A: and B: for floppy drives, leaving the first hard disk introduced in 1983 to become C:. Microsoft preserved this ordering even when a single floppy acted as both A: and B:, and later Windows inherited the convention, embedding it in installers, scripts and legacy software that expect paths like C:\Program Files. The article traces the historical decisions—from Gary Kildall’s 1974 CP/M to IBM’s 1981 model 5150 and the 1983 PC/XT—explaining why the floppy‑centric letters persist on modern NVMe systems.

💡 Why It Matters

· The entrenched C: drive letter forces legacy software compatibility, meaning developers must continue supporting an outdated naming convention even as physical media have vanished.

Capsules Windows

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Windows 11’s big redesign has started shipping, and the first thing it…

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💡 By finally modernizing a daily‑use dialog, Microsoft removes a lingering UX inconsistency and demonstrates that incremental updates can deliver tangible user‑experience gains without a full OS overhaul.

windowslatest.com · Nov 15

I brought back WordPad on Windows 11, and it beats the AI-stuffed…

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💡 Restoring WordPad gives users a functional, ad‑free middle‑ground editor that Microsoft’s own updates have abandoned, catering to those who need simple rich‑text capabilities without AI or subscription ties.

windowslatest.com · Nov 14

Windows 11’s modern Run box arrives for everyone in December, and Microsoft…

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💡 By finally retiring an almost‑unused feature and delivering a faster, modern UI, Microsoft demonstrates that even legacy utilities can be refreshed to meet contemporary user expectations.

windowslatest.com · Nov 13

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windowslatest.com · Nov 12

Microsoft investigates Windows 11 KB5132061 issues, 0x800f0993, 0x80070306, and 0x800f0989 installation errors

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💡 Exploiting a single Outlook click can hand attackers a user’s authentication hash, opening pathways to any system the victim can access. Federal agencies now face a hard deadline to block that route.