{"id":181636,"date":"2025-04-24T11:47:09","date_gmt":"2025-04-24T11:47:09","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=181636"},"modified":"2025-06-26T11:01:35","modified_gmt":"2025-06-26T11:01:35","slug":"fix-requested-system-device-cannot-be-found-error","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/fix-requested-system-device-cannot-be-found-error\/","title":{"rendered":"How to Fix the \u201cRequested System Device Cannot Be Found\u201d Error?"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>The Windows Boot Manager relies on the BCD (Boot Configuration Data) file to boot up the operating system. This file contains important details about the OS, including its boot settings. When the BCD file is misconfigured or corrupted, your Windows PC becomes unbootable and shows the following error messages:<\/p><ul class=\"wp-block-list\">\n<li><em>rebuildbcd the requested system device cannot be found<\/em><\/li>\n\n\n\n<li><em>Bcdedit import the requested system device cannot be found<\/em><\/li>\n<\/ul><p>In this guide, we will try to uncover the causes behind this error and share some troubleshooting techniques to resolve it.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"400\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Requested-System-Device-Cannot-Be-Found.jpg\" alt=\"Requested System Device Cannot Be Found\" class=\"wp-image-183365 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Requested-System-Device-Cannot-Be-Found.jpg 750w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Requested-System-Device-Cannot-Be-Found-300x160.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Requested-System-Device-Cannot-Be-Found-150x80.jpg 150w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n<\/div><h2 class=\"wp-block-heading\" id=\"why-am-i-facing-the-&ldquo;requested-system-device-cannot-be-found&rdquo;-error?\">Why Am I Facing the &ldquo;Requested System Device Cannot Be Found&rdquo; Error?<\/h2><p>The &ldquo;Requested system device cannot be found&rdquo; error usually occurs when a normal Windows boot fails, and you try to rebuild the Master Boot Record (MBR) using Command Prompt with a bootable USB drive. Here&rsquo;s what might have triggered this error on your system:<\/p><ul class=\"wp-block-list\">\n<li>Your BIOS is unable to recognize the USB interface. If your Windows repair environment fails to detect USB 3.0, try changing it with a USB 2.0 interface.<\/li>\n\n\n\n<li>The boot settings on MBR and GPT differ. Select UEFI mode to reboot the PC when converting MBR to GPT.<\/li>\n\n\n\n<li>The system requires EFI partition on GPT disks. When this is lost, you are required to recreate EFI partition. For MBR disks, make sure the BCD registry file partition is set as active.<\/li>\n\n\n\n<li>Windows searches for the installation path on the local drive by default. When you boot from USB, it may not detect the correct system partition, leading to the error.<\/li>\n\n\n\n<li>If you had originally installed the Windows using an older BIOS version, the bootable USB needs to match that same configuration, else it may run into issues.<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"troubleshooting-the-&ldquo;requested-system-device-cannot-be-found&rdquo;-error\">Troubleshooting the &ldquo;Requested System Device Cannot Be Found&rdquo; Error<\/h2><p>In this section, we will outline the step-by-step solutions for fixing the <strong>&ldquo;Requested System Device Cannot be found&rdquo; <\/strong>error on your Windows PC.<\/p><h3 class=\"wp-block-heading\">Method 1: Repair Windows with Windows Repair DVD\/CD<\/h3><p>If the Windows PE or Windows is unable to detect USB 3.0 or USB 3.0 drives, try to make a Windows installation media using a CD or DVD. Here&rsquo;s how to repair Windows with Windows repair DVD\/CD:<\/p><p><strong>Step 1:<\/strong> Create a Windows 11 installation media DVD\/CD with the help of <a href=\"https:\/\/www.microsoft.com\/en-ca\/software-download\/windows10\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Microsoft&rsquo;s Media Creation tool<\/a>.<\/p><p><strong>Step 2:<\/strong> Boot from the Windows installation media and select <strong>Command Prompt<\/strong> on the <strong>Advanced options<\/strong> screen.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"624\" height=\"406\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture1-1.png\" alt=\"Windows installation media\" class=\"wp-image-181638 apply-gradient-on-post-images\" style=\"width:624px;height:auto\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture1-1.png 624w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture1-1-300x195.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture1-1-150x98.png 150w\" sizes=\"auto, (max-width: 624px) 100vw, 624px\" \/><\/figure>\n<\/div><p><strong>Step 3:<\/strong> Now, execute the following commands one-by-one:<\/p><pre class=\"wp-block-code command_container\"><code><strong><em>bootrec\/fixmbr<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>bootrec\/fixboot<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>bootrec\/rebuildbcd<\/em><\/strong><\/code><\/pre><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"218\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture2.jpg\" alt=\"Execute command on command prompt\" class=\"wp-image-181639 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture2.jpg 500w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture2-300x131.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture2-150x65.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><p>Once you have successfully executed the commands, restart your computer to see if the issue is resolved.<\/p><h3 class=\"wp-block-heading\">Method 2: Set the Correct Partition in Command Prompt<\/h3><p>When you try to perform bootrec operations using a USB installation media and fail to detect the system partitions, it could cause the &ldquo;Requested system device cannot be found&rdquo; issue on your PC. To fix this, select the correct partitions in the command prompt. Here&rsquo;s how to do it:<\/p><p><strong>Step 1:<\/strong> Boot into Windows using a UEFI installation disk (CD, DVD, or USB) and select <strong>Command Prompt<\/strong> from the <strong>Advanced options<\/strong> screen.<\/p><p><strong>Step 2: <\/strong>Enter<strong> diskpart <\/strong>and press <strong>Enter<\/strong> to list all partitions. Make sure that the EFI partition is formatted as FAT32.<\/p><p><strong>Step 3: <\/strong>Now, execute the following commands:<\/p><pre class=\"wp-block-code command_container\"><code><strong><em>Diskpart<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>List volume<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>Select volume 3<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>Assign letter=Z<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>Exit<\/em><\/strong><\/code><\/pre><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"624\" height=\"326\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture3.jpg\" alt=\"Set the Correct Partition in Command Prompt\" class=\"wp-image-181640 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture3.jpg 624w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture3-300x157.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture3-150x78.jpg 150w\" sizes=\"auto, (max-width: 624px) 100vw, 624px\" \/><\/figure>\n<\/div><p><strong>Step 4:<\/strong> After exiting diskpart, execute the following commands:<\/p><pre class=\"wp-block-code command_container\"><code><strong><em>cd \/dm:\\EFI\\Microsoft\\Boot\\<\/em><\/strong><\/code><\/pre><pre class=\"wp-block-code command_container\"><code><strong><em>bootrec \/fixboot<\/em><\/strong><\/code><\/pre><p><strong>Step 5:<\/strong> Rename the BCD file to BCD.bak. For this, type<strong> <em>ren BCD BCD.bak<\/em> <\/strong>and press <strong>Enter<\/strong>.<\/p><p><strong>Step 6:<\/strong> Execute the following command to recreate BCD: <strong><em>bcdboot c:Windows \/l en-us \/s z: \/f ALL<\/em><\/strong><\/p><p><strong>Step 7:<\/strong> Exit the Command Prompt and <strong>Restart<\/strong> your PC to see if the issue is resolved.<\/p><h3 class=\"wp-block-heading\">Method 3: Change the Boot Mode<\/h3><p>When facing the <strong>&ldquo;Requested system device cannot be found&rdquo;<\/strong> error, consider switching the boot mode as it reconfigures the boot settings and resolves any underlying errors. Here&rsquo;s how to do it:<\/p><p><strong>Step 1:<\/strong> Restart your PC.<\/p><p><strong>Step 2:<\/strong> Boot into BIOS (usually done by pressing F2, F12, DEL, or ESC, depending on your manufacturer).<\/p><p><strong>Step 3:<\/strong> Navigate to the <strong>Boot<\/strong> or <strong>Boot Options<\/strong> section.<\/p><p><strong>Step 4:<\/strong> Switch between <strong>UEFI <\/strong>and <strong>Legacy<\/strong> CSM boot mode.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"624\" height=\"368\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture4-1.png\" alt=\"Switch between UEFI and Legacy CSM boot mode\" class=\"wp-image-181641 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture4-1.png 624w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture4-1-300x177.png 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2025\/04\/Picture4-1-150x88.png 150w\" sizes=\"auto, (max-width: 624px) 100vw, 624px\" \/><\/figure>\n<\/div><p><strong>Step 5:<\/strong> Save changes and exit.<\/p><p>Restart your computer and see if the issue is resolved.<\/p><h2 class=\"wp-block-heading\" id=\"how-to-recover-lost-data-when-facing-the-&ldquo;requested-system-device-cannot-be-found&rdquo;-error?\">How to Recover Lost Data When Facing the &ldquo;Requested System Device Cannot Be Found&rdquo; Error?<\/h2><p>If you are not careful while using the bootrec command, you might accidentally select the wrong partition to rebuild the BCD. This can lead to the overwriting of certain partitions containing your important data, making them inaccessible.<\/p><p>For this reason, it&rsquo;s always a good idea to back up your data before attempting any major system modifications. However, if you&rsquo;re someone who is stuck with this error after attempting to rebuild BCD, use a <a href=\"https:\/\/www.stellarinfo.com\/windows-data-recovery-professional.php\" target=\"_blank\" rel=\"noreferrer noopener\">professional data recovery software<\/a> to recover your important data.<\/p><h2 class=\"wp-block-heading\" id=\"summing-up\">Summing Up<\/h2><p>The above methods should help you resolve the &ldquo;Requested system device cannot be found&rdquo; error on your system. However, if the above methods fail to resolve the error on your system, consider <a href=\"https:\/\/www.stellarinfo.com\/article\/how-to-download-and-install-windows-11.php\" target=\"_blank\" rel=\"noreferrer noopener\">reinstalling Windows<\/a> as a last resort. &nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Windows Boot Manager relies on the BCD (Boot Configuration Data) file&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/fix-requested-system-device-cannot-be-found-error\/\">Continue reading <span class=\"screen-reader-text\">How to Fix the \u201cRequested System Device Cannot Be Found\u201d Error?<\/span><\/a><\/p>\n","protected":false},"author":91,"featured_media":181772,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[701],"tags":[6206],"class_list":["post-181636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows-data-recovery-professional","tag-the-requested-system-device-cannot-be-found","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Fix the Requested System Device Cannot Be Found Error?<\/title>\n<meta name=\"description\" content=\"Method 1: Repair Windows with Windows Repair DVD\/CD, Method 2: Set the Correct Partition in Command Prompt, Method 3: Change the Boot Mode\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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