--- title: A Defrag Simulator In Your Browser | daily.dev description: A browser-based simulator recreates the look and sound of Windows 98's Disk Defragmenter utility, complete with the shuffling colored squares, progress bar,... canonical: https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A Defrag Simulator In Your Browser | daily.dev og:description: A browser-based simulator recreates the look and sound of Windows 98's Disk Defragmenter utility, complete with the shuffling colored squares, progress bar,... og:url: https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn og:image: https://api.daily.dev/og/posts/77IdEDywN.png og:image:alt: A Defrag Simulator In Your Browser og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A Defrag Simulator In Your Browser **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 1 upvotes · 2 comments ## Summary A browser-based simulator recreates the look and sound of Windows 98's Disk Defragmenter utility, complete with the shuffling colored squares, progress bar, and disk chunking noises. The piece explains how real disk defragmentation worked on spinning magnetic platters to reduce file fragmentation and speed up read access, and notes that modern file systems and SSDs have made defragmentation largely unnecessary today. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why was disk defragmentation necessary on old hard drives but not needed on SSDs? Defragmentation was necessary because spinning magnetic platters stored file pieces in scattered locations, forcing the physical read head to jump around, which slowed access; defragmenting moved pieces closer together for faster contiguous reads. Solid-state drives have virtually instant seek times with no moving parts, and modern file systems manage fragmentation better, eliminating the need for defragmentation. _Curious readers digging into storage internals can follow more retro-computing deep dives on daily.dev._ ## Community discussion Top comments from developers on daily.dev. **@theacademe** · 0 upvotes > This would be more fun to watch than 3D pipes... **@raunakpersonal** · 0 upvotes > A browser based defrag simulator is a clever way to make storage behavior tangible. Showing the same workload on an HDD versus an SSD would be especially educational because it explains why fragmentation mattered historically and why the performance story changed. --- [View this post on daily.dev](https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A Defrag Simulator In Your Browser","url":"https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn"},"datePublished":"2026-09-02T05:19:25.732Z","dateModified":"2026-09-02T05:19:44.007Z","description":"A browser-based simulator recreates the look and sound of Windows 98's Disk Defragmenter utility, complete with the shuffling colored squares, progress bar,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/4edc0b480f52aa6a0b706cd501eaf833?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/4edc0b480f52aa6a0b706cd501eaf833?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hackaday","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hackaday","logo":"https://media.daily.dev/image/upload/s--JhDfhy70--/f_auto,q_auto/v1767541814/logos/hackaday","url":"https://daily.dev/sources/hackaday"},"commentCount":2,"discussionUrl":"https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":2}],"keywords":"","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackaday","item":"https://daily.dev/sources/hackaday"},{"@type":"ListItem","position":3,"name":"A Defrag Simulator In Your Browser"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn","comment":[{"@type":"Comment","text":"This would be more fun to watch than 3D pipes…","datePublished":"2026-09-02T05:24:54.462Z","url":"https://daily.dev/posts/77IdEDywN#c-xcG1rRDDh","author":{"@type":"Person","name":"theacademe","url":"https://daily.dev/theacademe","image":"https://media.daily.dev/image/upload/s--C29_q-xW--/f_auto/v1756852849/avatars/avatar_wNAjl1VBaVx2CCjbkkb5h?_a=BAMClqZW0"}},{"@type":"Comment","text":"A browser based defrag simulator is a clever way to make storage behavior tangible. Showing the same workload on an HDD versus an SSD would be especially educational because it explains why fragmentation mattered historically and why the performance story changed.","datePublished":"2026-09-02T08:15:37.564Z","url":"https://daily.dev/posts/77IdEDywN#c-gJVHTWMVA","author":{"@type":"Person","name":"Raunak Personal","url":"https://daily.dev/raunakpersonal","image":"https://media.daily.dev/image/upload/s--OBhKXyMB--/f_auto/v1773905110/avatars/avatar_fvBRceLNSvaKf8Z9ZAmaT?_a=BAMAMiiu0"}}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/a-defrag-simulator-in-your-browser-77idedywn#faq","mainEntity":[{"@type":"Question","name":"Why was disk defragmentation necessary on old hard drives but not needed on SSDs?","acceptedAnswer":{"@type":"Answer","text":"Defragmentation was necessary because spinning magnetic platters stored file pieces in scattered locations, forcing the physical read head to jump around, which slowed access; defragmenting moved pieces closer together for faster contiguous reads. 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