{"id":48444,"date":"2026-03-08T07:26:55","date_gmt":"2026-03-07T23:26:55","guid":{"rendered":"https:\/\/www.amagicsoft.com\/?p=48444"},"modified":"2026-03-09T14:54:41","modified_gmt":"2026-03-09T06:54:41","slug":"master-file-table-size","status":"publish","type":"post","link":"https:\/\/www.amagicsoft.com\/jp\/wiki\/master-file-table-size.html","title":{"rendered":"\u30de\u30b9\u30bf\u30fc\u30d5\u30a1\u30a4\u30eb\u30c6\u30fc\u30d6\u30eb\u30b5\u30a4\u30ba\u306e\u8aac\u660e\uff1aWindows\u306b\u304a\u3051\u308bNTFS\u30de\u30b9\u30bf\u30fc\u30d5\u30a1\u30a4\u30eb\u306e\u30c6\u30fc\u30d6\u30eb\u30b5\u30a4\u30ba"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"48444\" class=\"elementor elementor-48444\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-q3jguho dtec-docx-root dtec-post-48444 e-flex e-con-boxed e-con e-parent\" data-id=\"q3jguho\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ftskrii elementor-widget elementor-widget-text-editor\" data-id=\"ftskrii\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>master file table size<\/strong> is a crucial concept in the <a href=\"https:\/\/www.amagicsoft.com\/wiki\/what-is-ntfs-file-system.html\">NTFS file system<\/a> used by Windows. Many users encounter the term when analyzing disk performance, checking file system information, or troubleshooting storage problems.<\/p>\n<p>Understanding the <strong>NTFS master file table size<\/strong> helps administrators and advanced users diagnose disk issues, manage large volumes of files, and prevent data loss. In this guide, we will explain what the Master File Table is, how the <strong>Windows master file table size<\/strong> works, and how to check and manage it.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ktnc4d9 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"ktnc4d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;exclude_headings_by_selector&quot;:&quot;.faq-no-toc, h2:contains(Data Recovery Assessment)&quot;,&quot;marker_view&quot;:&quot;bullets&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;icon&quot;:{&quot;value&quot;:&quot;fas fa-circle&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__ktnc4d9\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__ktnc4d9\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__ktnc4d9\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-638h0w0 elementor-widget elementor-widget-heading\" data-id=\"638h0w0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Is the Master File Table (MFT)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-h0hx1r3 elementor-widget elementor-widget-text-editor\" data-id=\"h0hx1r3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong><a href=\"https:\/\/www.amagicsoft.com\/wiki\/ntfs-master-file-table.html\">Master File Table (MFT)<\/a><\/strong> is the core metadata database of the NTFS file system. Every file and folder stored on an NTFS partition has at least one entry in the MFT. These entries contain important information such as file name, timestamps, permissions, and the location of the file data. <\/p>\n<p>You can think of the MFT as a <strong>catalog of everything stored on a disk<\/strong>. When Windows accesses a file, it first checks the MFT to locate the file&#8217;s data blocks.<\/p>\n<p>Each MFT record typically occupies <strong>1024 bytes<\/strong>, and new records are added as files are created on the system. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-z4desu6 elementor-widget elementor-widget-heading\" data-id=\"z4desu6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Does Master File Table Size Mean?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1emj5yu elementor-widget elementor-widget-text-editor\" data-id=\"1emj5yu\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>master file table size<\/strong> refers to the amount of disk space currently used by the MFT to store metadata records for files and directories.<\/p>\n<p>As files are added to an NTFS volume:<\/p>\n<ul><li>New entries are created in the MFT<\/li><li>The MFT grows in size<\/li><li>The system reserves additional space to reduce fragmentation<\/li><\/ul>\n<p>When files are deleted, their MFT entries are marked as reusable, but the <strong>MFT size does not shrink automatically<\/strong>. <\/p>\n<p>This means the <strong>NTFS master file table size can grow over time<\/strong>, especially on systems that frequently create and delete files.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-rfro0q1 elementor-widget elementor-widget-heading\" data-id=\"rfro0q1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Default NTFS Master File Table Size Allocation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-t96tqfw elementor-widget elementor-widget-text-editor\" data-id=\"t96tqfw\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>To maintain performance, NTFS reserves a portion of the disk for future MFT expansion.<\/p>\n<p>Typically:<\/p>\n<ul><li>About <strong>12.5% of the disk volume<\/strong> is reserved as the <strong>MFT zone<\/strong><\/li><li>This reserved space helps keep the MFT contiguous and reduces fragmentation<\/li><\/ul>\n<p>If the disk contains many small files, the <strong>Windows master file table size may grow faster<\/strong> because each file requires its own metadata entry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0t3pu2k elementor-widget elementor-widget-heading\" data-id=\"0t3pu2k\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Master File Table Size Matters<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-td2lwqt elementor-widget elementor-widget-text-editor\" data-id=\"td2lwqt\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The size and health of the MFT directly affect system performance and file accessibility.<\/p>\n<h3>File System Performance<\/h3>\n<p>Every file operation requires access to the MFT. If the MFT becomes fragmented or extremely large, disk access may slow down.<\/p>\n<h3>Handling Millions of Files<\/h3>\n<p>Servers, databases, and development environments often contain millions of files. In such cases, the <strong>NTFS master file table size can grow significantly<\/strong>.<\/p>\n<h3>Disk Fragmentation<\/h3>\n<p>If the reserved MFT zone fills up, the MFT may become fragmented across the disk, which can reduce performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06hpqer elementor-widget elementor-widget-heading\" data-id=\"06hpqer\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Check NTFS Master File Table Size in Windows<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-apb3iyz elementor-widget elementor-widget-text-editor\" data-id=\"apb3iyz\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Windows provides built-in tools to view information about the MFT.<\/p>\n<h3>Method 1: Using Command Prompt<\/h3>\n<p>Open Command Prompt as administrator and run:<\/p>\n<p>fsutil fsinfo ntfsinfo C:<\/p>\n<p>This command displays detailed NTFS information, including the <strong>current master file table size and MFT zone statistics<\/strong>. <\/p>\n<h3>Method 2: Disk Defragmentation Report<\/h3>\n<p>You can also analyze the disk using the Windows Defragmentation tool.<\/p>\n<p>Steps:<\/p>\n<ol><li>Open <strong>Defragment and Optimize Drives<\/strong><\/li><li>Analyze the disk<\/li><li>View the report for file system statistics<\/li><\/ol>\n<p>The report includes details such as <strong>MFT size and fragmentation level<\/strong>. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9j960f0 elementor-widget elementor-widget-heading\" data-id=\"9j960f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Common Problems Related to Master File Table Size<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-n3ewxex elementor-widget elementor-widget-text-editor\" data-id=\"n3ewxex\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Although the MFT usually works automatically, problems can occur in certain situations.<\/p>\n<h3>MFT Fragmentation<\/h3>\n<p>When the reserved MFT zone runs out of space, additional MFT entries may be stored in different disk areas.<\/p>\n<p>This can cause:<\/p>\n<ul><li>Slower file access<\/li><li>Increased disk latency<\/li><li>Reduced system performance<\/li><\/ul>\n<h3>MFT Corruption<\/h3>\n<p>If the MFT becomes damaged due to:<\/p>\n<ul><li>sudden power failure<\/li><li>disk errors<\/li><li>malware<\/li><li>improper shutdown<\/li><\/ul>\n<p>the system may no longer be able to locate files.<\/p>\n<p>Symptoms include:<\/p>\n<ul><li>\u201cDrive is not accessible\u201d<\/li><li><a href=\"https:\/\/www.amagicsoft.com\/disk-issue-fix\/external-hard-disk-shows-raw-file-system.html\">RAW file system errors<\/a><\/li><li>missing files<\/li><li>inaccessible partitions<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-39j6dop elementor-widget elementor-widget-heading\" data-id=\"39j6dop\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Can Master File Table Issues Cause Data Loss?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ohtnzby elementor-widget elementor-widget-text-editor\" data-id=\"ohtnzby\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Yes. Since the <strong>Master File Table stores metadata for every file<\/strong>, corruption in the MFT can prevent Windows from identifying where files are stored.<\/p>\n<p>Even though the actual file data may still exist on the disk, the operating system may treat the partition as empty or inaccessible.<\/p>\n<p>In such cases, <strong><a href=\"https:\/\/www.amagicsoft.com\/magic-data-recovery\">professional data recovery software<\/a> is often required<\/strong> to rebuild file records and recover lost files.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-vozkac1 elementor-widget elementor-widget-heading\" data-id=\"vozkac1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Recover Data When MFT Is Corrupted<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc31pdo elementor-widget elementor-widget-text-editor\" data-id=\"bc31pdo\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If a partition becomes inaccessible due to <strong>Master File Table damage<\/strong>, avoid formatting the drive immediately.<\/p>\n<p>Instead, you can use specialized recovery software such as <strong><a href=\"https:\/\/www.amagicsoft.com\/magic-data-recovery\">Magic Data Recovery<\/a><\/strong>. This tool can scan the disk, locate lost files, and rebuild file structures even when the MFT is damaged or missing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6lb4u62 elementor-widget elementor-widget-image\" data-id=\"6lb4u62\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.amagicsoft.com\/wp-content\/uploads\/2025\/06\/Magic-Date-Recovery-Home-10-1536x950.webp\" title=\"\" alt=\"Recover data using magic data recovery for mft error\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-837uxqd elementor-widget elementor-widget-text-editor\" data-id=\"837uxqd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Magic Data Recovery is particularly useful for recovering data from:<\/p>\n<ul><li>corrupted NTFS partitions<\/li><li>RAW drives<\/li><li>deleted or lost files<\/li><li>partitions affected by MFT errors<\/li><\/ul>\n<p>Running a recovery scan as soon as possible increases the chances of restoring your important files.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-wrk21y0 elementor-widget elementor-widget-heading\" data-id=\"wrk21y0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-lsw86fd elementor-widget elementor-widget-text-editor\" data-id=\"lsw86fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The <strong>master file table size<\/strong> is a key component of the NTFS file system that determines how file metadata is stored and managed. As files are created and deleted, the <strong>NTFS master file table size<\/strong> naturally grows and plays a critical role in disk performance.<\/p><p>Understanding the <strong>Windows master file table size<\/strong> helps users diagnose disk issues, manage storage efficiently, and avoid file system problems. If the MFT becomes corrupted and causes partitions to become inaccessible, tools like <strong><a href=\"https:\/\/www.amagicsoft.com\/magic-data-recovery\">Magic Data Recovery<\/a><\/strong> can help retrieve lost data safely with <a href=\"https:\/\/www.amagicsoft.com\/data-recovery\/deleted-file-recovery\">professional data recovery methods<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-99b31cf e-con-full e-flex e-con e-child\" data-id=\"99b31cf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1e5c617 e-con-full e-flex e-con e-child\" data-id=\"1e5c617\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff11641 elementor-widget__width-auto animated-fast elementor-align-center elementor-widget elementor-widget-elementskit-button\" data-id=\"ff11641\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:200}\" data-widget_type=\"elementskit-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" >\t\t<div class=\"ekit-btn-wraper\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/download.amagicsoft.com\/product\/mdr\/magic-data-recovery.exe\" class=\"elementskit-btn  whitespace--normal\" id=\"\">\n\t\t\t\t\tDownload Magic Data Recovery\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n        <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26f1dc5 downloadtext elementor-widget elementor-widget-text-editor\" data-id=\"26f1dc5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Supports Windows 7\/8\/10\/11 and Windows Server<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-zeobm9l elementor-widget elementor-widget-heading\" data-id=\"zeobm9l\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQs<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-mtx2ydx faq-no-toc dtec-faq elementor-widget elementor-widget-elementskit-faq\" data-id=\"mtx2ydx\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-faq.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" >\n                <div class=\"elementskit-single-faq elementor-repeater-item-yblasqb\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">What is the master file table size in NTFS?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>The master file table size represents the disk space used by the MFT to store metadata for files and folders on an NTFS volume. Each file has a corresponding record in the MFT. As the number of files grows, the MFT expands to accommodate additional entries and maintain file system organization.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-0alz42h\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">Why does the NTFS master file table size increase over time?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>The NTFS master file table size increases because new files and directories require new MFT records. Even when files are deleted, the space allocated for MFT entries is not reduced. Instead, those entries are marked as reusable, which allows the MFT to grow gradually over the lifespan of the disk.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-pp02ska\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">How can I check the Windows master file table size?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>You can check the Windows master file table size by running the command <strong>fsutil fsinfo ntfsinfo C:<\/strong> in an elevated Command Prompt. This command displays detailed NTFS information, including MFT size, cluster size, and reserved MFT zone statistics for the selected drive.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-nm5vj2e\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">What is the MFT zone in NTFS?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>The MFT zone is a reserved portion of the disk set aside by NTFS to allow the master file table to grow without becoming fragmented. Typically, around 12.5% of the disk space is reserved to ensure efficient expansion of the MFT as more files are created.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-m7vbtqj\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">Can the master file table become fragmented?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>Yes, the master file table can become fragmented if the reserved MFT zone fills up. When this happens, additional MFT records may be stored in different disk locations. Fragmentation can slow down file access and slightly reduce overall disk performance.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-zomansx\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">What happens if the master file table is corrupted?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>If the master file table becomes corrupted, Windows may not be able to locate files stored on the disk. The partition may appear empty, inaccessible, or converted to RAW format. However, the actual file data may still exist on the drive and could potentially be recovered.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-6jppq1b\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">Can a large master file table affect disk performance?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>A large master file table usually does not cause problems by itself. However, if the MFT becomes fragmented or extremely large due to millions of small files, it may slightly impact disk access times and overall file system efficiency.<\/p>            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-mp5y9th\">\n            <div class=\"elementskit-faq-header\">\n                <h3 class=\"elementskit-faq-title\">How can I recover files lost due to MFT corruption?<\/h3>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                <p>If files are lost due to MFT corruption, you should avoid writing new data to the affected drive. Using professional recovery software like <strong>Magic Data Recovery<\/strong> allows you to scan the disk, rebuild file records, and recover files from corrupted NTFS partitions or inaccessible drives.<\/p>            <\/div>\n        <\/div>\n                                <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the master file table size in NTFS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>The master file table size represents the disk space used by the MFT to store metadata for files and folders on an NTFS volume. Each file has a corresponding record in the MFT. As the number of files grows, the MFT expands to accommodate additional entries and maintain file system organization.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"Why does the NTFS master file table size increase over time?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>The NTFS master file table size increases because new files and directories require new MFT records. Even when files are deleted, the space allocated for MFT entries is not reduced. Instead, those entries are marked as reusable, which allows the MFT to grow gradually over the lifespan of the disk.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"How can I check the Windows master file table size?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>You can check the Windows master file table size by running the command <strong>fsutil fsinfo ntfsinfo C:<\/strong> in an elevated Command Prompt. This command displays detailed NTFS information, including MFT size, cluster size, and reserved MFT zone statistics for the selected drive.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"What is the MFT zone in NTFS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>The MFT zone is a reserved portion of the disk set aside by NTFS to allow the master file table to grow without becoming fragmented. Typically, around 12.5% of the disk space is reserved to ensure efficient expansion of the MFT as more files are created.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"Can the master file table become fragmented?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Yes, the master file table can become fragmented if the reserved MFT zone fills up. When this happens, additional MFT records may be stored in different disk locations. Fragmentation can slow down file access and slightly reduce overall disk performance.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"What happens if the master file table is corrupted?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>If the master file table becomes corrupted, Windows may not be able to locate files stored on the disk. The partition may appear empty, inaccessible, or converted to RAW format. However, the actual file data may still exist on the drive and could potentially be recovered.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"Can a large master file table affect disk performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>A large master file table usually does not cause problems by itself. However, if the MFT becomes fragmented or extremely large due to millions of small files, it may slightly impact disk access times and overall file system efficiency.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"How can I recover files lost due to MFT corruption?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>If files are lost due to MFT corruption, you should avoid writing new data to the affected drive. Using professional recovery software like <strong>Magic Data Recovery<\/strong> allows you to scan the disk, rebuild file records, and recover files from corrupted NTFS partitions or inaccessible drives.<\/p>\"}}]}<\/script>\n                \n    <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The master file table size is a crucial concept in the NTFS file system used by Windows. Many users encounter the term when analyzing disk performance, checking file system information, or troubleshooting storage problems. Understanding the NTFS master file table size helps administrators and advanced users diagnose disk issues, manage large volumes of files, and prevent data loss. In this guide, we will explain what the Master File Table is, how the Windows master file table size works, and how to check and manage it. Table of Contents What Is the Master File Table (MFT)? The Master File Table (MFT) is the core metadata database of the NTFS file system. [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":48448,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[725],"tags":[738],"class_list":["post-48444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wiki","tag-wiki"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Master File Table Size Explained | Amagicsoft<\/title>\n<meta name=\"description\" content=\"Learn what master file table size means, how NTFS master file table size works in Windows, how to check it.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.amagicsoft.com\/jp\/wiki\/master-file-table-size.html\" \/>\n<meta property=\"og:locale\" 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