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“What Windows 1.0 ran on”

The verified answer to the Newsday Crossword clue “What Windows 1.0 ran on”, with letter-by-letter analysis and the full puzzle context for the Friday, June 6, 2025 puzzle.

Published · Down · 5 letters

Hints first

Letters 5
First letter M
Last letter S
M ? ? ? S

A 5-letter down entry from the Friday puzzle

The Answer

M S D O S

The answer to “What Windows 1.0 ran on” is MSDOS

Letters 5
Direction Down
Published Jun 6, 2025

Letter analysis: the 5-letter answer

Vowels, consonants, and crossword construction notes
Unique 4 of 5 positions
Vowels 1 20% of word
Consonants 4 non-vowels
First letter M starts with

The clue “What Windows 1.0 ran on” appeared in the Newsday Crossword on Friday, June 6, 2025 as a down entry. The verified answer is MSDOS — a 5-letter word that begins with M and ends with S.

This answer contains 1 vowel and 4 consonants. The Newsday Crossword is published daily by Newsday on Long Island and edited by Stan Newman, whose Saturday Stumper is widely considered one of the toughest mainstream crosswords in print.

Other clues with the answer MSDOS

MSDOS has been used as the answer for these Newsday Crossword clues
“Windows forerunner” Mar 7, 2025

More clues from the June 6, 2025 puzzle

Friday Newsday Crossword
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Frequently asked questions about “What Windows 1.0 ran on”

What is the answer to “What Windows 1.0 ran on” in the Newsday Crossword?

The verified answer is MSDOS — a 5-letter word that appeared as a down entry on Friday, June 6, 2025.

How many letters is the answer to “What Windows 1.0 ran on”?

The answer MSDOS contains 5 letters.

Was “What Windows 1.0 ran on” an across or down clue?

This clue ran as a Down entry.

Is this site affiliated with Newsday?

No. This is an independent fan reference site — we are not affiliated with Newsday. The Newsday Crossword is a trademark of its respective owner. We solve and verify each Newsday Crossword puzzle manually before publishing the answer key.

What Windows 1.0 ran on — Newsday Crossword Clue Answer | Newsday Crossword Answers