{"id":580,"date":"2013-04-25T04:39:00","date_gmt":"2013-04-25T11:39:00","guid":{"rendered":"https:\/\/kb.terabyteunlimited.com\/kb-articles\/converting-a-gpt-data-or-windows-disk-to-mbr-embr\/"},"modified":"2026-01-07T16:41:09","modified_gmt":"2026-01-08T00:41:09","slug":"converting-a-gpt-data-or-windows-disk-to-mbr-embr","status":"publish","type":"lsvr_kba","link":"https:\/\/www.terabyteunlimited.com\/kb\/kb-articles\/converting-a-gpt-data-or-windows-disk-to-mbr-embr\/","title":{"rendered":"Converting a GPT Data or Windows Disk to MBR\/EMBR"},"content":{"rendered":"<p><strong><span style=\"color: #000066; font-size: large;\">Introduction<\/span><\/strong><\/p>\r\n<p>This article provides methods to convert GPT drives (both data and Windows 7\/8.x\/10) to MBR or EMBR. The conversion can be helpful in cases where booting needs to be changed to Legacy (non-UEFI) mode. An example would be that you wish to install BootIt Bare Metal and set up multi-booting on the system.<\/p>\r\n<p><strong> Note:<\/strong> Windows 11 does not support being installed to an MBR partition or in non-UEFI (Legacy) boot mode. Converting a drive with a Windows 11 installation is not recommended.<\/p>\r\n<p>If you have TeraByte OS Deployment Tool Suite Pro (TBOSDT) for BootIt (included with the purchase of BootIt Bare Metal) you can use the chgdtype.tbs script to perform the conversion. For details, refer to the following KB article: <a href=\"https:\/\/www.terabyteunlimited.com\/kb\/?p=604\">Convert a Disk from GPT to MBR or MBR to GPT Using the chgdtype.tbs Script<\/a><\/p>\r\n<p><strong><span style=\"color: #000066; font-size: large;\">Before you begin<\/span><\/strong><\/p>\r\n<ul>\r\n\t<li>Create your BootIt Bare Metal (BootIt BM) boot media. BootIt BM will be used to convert the drive\u0092s partitioning scheme from GPT to MBR\/EMBR. <br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Have your Windows repair media ready if converting a drive containing Windows 7\/8.x\/10. You should use 32-bit (x86) repair media for 32-bit Windows and 64-bit (x64) repair media for 64-bit Windows.\r\n\r\n<p>For a <strong>Windows 7<\/strong> drive, the repair media can be one of the following:<\/p>\r\n<ul>\r\n\t<li>Windows 7 installation DVD or USB flash drive (UFD)<\/li>\r\n\t<li>Windows 7 Repair Disc or UFD<\/li>\r\n\t<li><a href=\"https:\/\/www.terabyteunlimited.com\/howto\/tbwinre_tutorial\/\" target=\"_blank\" rel=\"noopener\">TBWinRE<\/a> CD or UFD (created in Windows 7)<\/li>\r\n\t<li><a href=\"https:\/\/www.terabyteunlimited.com\/howto\/tbwinpe_tutorial\/\" target=\"_blank\" rel=\"noopener\">TBWinPE<\/a> CD or UFD (created using the Windows 7 AIK)<\/li>\r\n<\/ul>\r\n<p>For a <strong>Windows 8\/8.1<\/strong> drive, the repair media can be one of the following:<\/p>\r\n<ul>\r\n\t<li>Windows 8\/8.1 installation DVD or USB flash drive (UFD)<\/li>\r\n\t<li>Windows 8\/8.1 Repair Disc or Recovery UFD<\/li>\r\n\t<li><a href=\"https:\/\/www.terabyteunlimited.com\/howto\/tbwinre_tutorial\/\" target=\"_blank\" rel=\"noopener\">TBWinRE<\/a> CD or UFD (created in Windows 8\/8.1)<\/li>\r\n\t<li><a href=\"https:\/\/www.terabyteunlimited.com\/howto\/tbwinpe_tutorial\/\" target=\"_blank\" rel=\"noopener\">TBWinPE<\/a> CD or UFD (created using the Windows 8\/8.1 ADK)<\/li>\r\n<\/ul>\r\n<p>For a <strong>Windows 10<\/strong> drive, the repair media can be one of the following:<\/p>\r\n<ul>\r\n\t<li>Windows 10 installation DVD or USB flash drive (UFD)<\/li>\r\n\t<li>Windows 10 Repair Disc or Recovery UFD<\/li>\r\n\t<li><a href=\"https:\/\/www.terabyteunlimited.com\/howto\/tbwinre_tutorial\/\" target=\"_blank\" rel=\"noopener\">TBWinRE<\/a> CD or UFD (created in Windows 10)<\/li>\r\n\t<li><a href=\"https:\/\/www.terabyteunlimited.com\/howto\/tbwinpe_tutorial\/\" target=\"_blank\" rel=\"noopener\">TBWinPE<\/a> CD or UFD (created using the Windows 10 ADK)<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<blockquote>\r\n<p>Verify that the system being converted can successfully boot from the repair media. Do not skip this step unless you are certain booting to the repair media works correctly. <strong>Note:<\/strong> Some Windows systems will not properly create a bootable repair disc. In these cases, use a UFD or use TBWinRE\/PE.<\/p>\r\n<\/blockquote>\r\n<ul>\r\n\t<li>Create a backup image of the drive being converted (strongly recommended as conversion requires partitions to be deleted and modified).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Verify drive size. Drives larger than 2TB will normally be limited to 2TB when converted to MBR. Drives larger than 2TB may not be able to be converted depending on how they are partitioned.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>If converting a Windows 7\/8.x\/10 drive, check the computer's BIOS and make sure it supports booting in Legacy BIOS mode (non-UEFI).<\/li>\r\n<\/ul>\r\n<p><strong><span style=\"color: #000066; font-size: large;\">Converting a Data GPT drive to MBR\/EMBR<\/span><\/strong><\/p>\r\n<p>This procedure is designed to convert a data GPT drive to an MBR drive. This type of drive does not contain a booting Windows installation.<\/p>\r\n<ol>\r\n\t<li>Boot into BootIt BM.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Select <strong>Partition Work<\/strong> on the desktop (click the icon or tab to it and press Enter).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Select the GPT drive to convert using the <strong>Drives<\/strong> drop-down box.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Make note of the partition names and sizes (names\/descriptions may be lost in the conversion and this will help you to know which is which).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>If converting to MBR you will need to have four or fewer partitions on the drive. Delete excess partitions as required. <strong>Note:<\/strong> This limit does not apply if converting the drive to EMBR.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Click the <strong>Change Disk Type<\/strong> button and then click <strong>MBR<\/strong> (or <strong>EMBR<\/strong>, if using EMBR).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Close the <strong>Work with Partitions<\/strong> window.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Remove the BootIt BM media and reboot the computer.<\/li>\r\n<\/ol>\r\n<p><strong>Note: <\/strong>Drive letter assignments may need to be updated after booting into Windows.<\/p>\r\n<p><strong><span style=\"color: #000066; font-size: large;\">Converting a Booting Windows 7\/8.x\/10 GPT drive to MBR\/EMBR<\/span><\/strong><\/p>\r\n<p>This procedure is designed to convert a bootable GPT\/EFI installation of Windows 7\/8.x\/10 to an MBR\/EMBR drive. Be aware that some steps of the conversion vary depending on whether Windows was installed using the Microsoft media (standard installation) or if it's an OEM system (OEM installation).<\/p>\r\n<p>The standard installation partition layouts differ slightly between the Windows versions:<\/p>\r\n<ul>\r\n\t<li><strong>Windows 7<\/strong><br \/>\r\nPartition 1: EFI System, 100MB<br \/>\r\nPartition 2: Microsoft reserved partition, 128MB (not visible in Windows Disk Management)<br \/>\r\nPartition 3: Windows 7 (size depends on drive)<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li><strong>Windows 8<\/strong><br \/>\r\nPartition 1: Recovery, 350MB - (WinRE)<br \/>\r\nPartition 2: EFI System, 100MB<br \/>\r\nPartition 3: Microsoft reserved partition, 128MB (not visible in Windows Disk Management) <br \/>\r\nPartition 4: Windows 8 (size depends on drive) <br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li><strong>Windows 10<\/strong><br \/>\r\nPartition 1: Recovery, 450MB - (WinRE)<br \/>\r\nPartition 2: EFI System, 100MB<br \/>\r\nPartition 3: Microsoft reserved partition, 16MB (not visible in Windows Disk Management) <br \/>\r\nPartition 4: Windows 10 (size depends on drive)<\/li>\r\n<\/ul>\r\n<p>OEM installations of Windows (those on brand-name\/retail computers) usually include additional partitions, depending on how the manufacturer configured the system. For example, in addition to the standard partitions shown above there may an OEM partition, Data partition, and a second Recovery partition:<\/p>\r\n<ul>\r\n\t<li><strong>OEM Windows 8<\/strong><br \/>\r\nPartition 1: Recovery, 1000MB - (WinRE)<br \/>\r\nPartition 2: EFI System, 260MB <br \/>\r\nPartition 3: OEM, 1000MB <br \/>\r\nPartition 4: Microsoft reserved partition, 128MB (not visible in Windows Disk Management)<br \/>\r\nPartition 5: Windows 8, 651GB<br \/>\r\nPartition 6: Data, 25GB<br \/>\r\nPartition 7: Recovery, 20GB - (OEM Recovery partition)<\/li>\r\n<\/ul>\r\n<p><strong>Note:<\/strong> Converting an OEM system may disable access to the OEM partition and recovery partition. If converting to MBR you may need to delete one or more of the additional partitions to get the count to four or less.<\/p>\r\n<h2><span style=\"color: #333399;\"><strong>Instructions:<\/strong><\/span><\/h2>\r\n<ol>\r\n\t<li>Disable the Windows Recovery Environment (WinRE):<br \/>\r\nIn most cases, disabling WinRE before the conversion allows it to be easily enabled afterwards and, depending on the system, skipping this step may result in a non-functional WinRE after the conversion is completed. However, some OEM systems may not disable completely and error when enabling after the conversion. Due to the nature of WinRE and the multitude of system configurations there may be systems where WinRE requires repairs to function properly after the conversion.<br \/>\r\n<br \/>\r\n<ol type=\"a\">\r\n\t<li>Boot into Windows.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Open an Administrator Command Prompt: <br \/>\r\n<br \/>\r\nIf using Windows 7: Click on the <strong>Start<\/strong> button, then <strong>All Programs<\/strong>, then <strong>Accessories<\/strong>. Right-click on the <strong>Command Prompt<\/strong> item and select <strong>Run as administrator<\/strong> from the pop-up menu. If a UAC prompt is displayed, click the <strong>Yes<\/strong> button.<br \/>\r\n<br \/>\r\nIf using Windows 8.x\/10: Press <strong>WinKey+X<\/strong> (or right-click the lower-left corner of the Desktop) and click <strong>Command Prompt (Admin)<\/strong> on the pop-up menu. If a UAC prompt is displayed, click the <strong>Yes<\/strong> button. <br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Run the following command:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>reagentc \/disable<\/strong><\/span><br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Verify that <strong>winre.wim<\/strong> now exists in the <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>C:&#92;Windows&#92;System32&#92;Recovery<\/strong><\/span> folder. Run:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>dir \/a C:&#92;Windows&#92;System32&#92;Recovery<\/strong><\/span><br \/>\r\n<br \/>\r\nFor a standard installation of Windows you should see <strong>winre.wim<\/strong> in the list of files. For OEM installations it may or may not be there, depending on the configuration. If the file doesn't exist and you want to keep WinRE you can either keep the Recovery (WinRE) partition (don't delete it in Step 9) or go ahead and delete it and copy the winre.wim file from your backup image (if the winre.wim file can't be found you won't be able to enable WinRE after the conversion). Copying the file may require other modifications before WinRE can be enabled (see notes at end of article).<br \/>\r\n<br \/>\r\n<\/li>\r\n<\/ol>\r\n<\/li>\r\n\t<li>Restart the computer and boot into the BIOS. Change the BIOS boot mode to allow booting Legacy mode (non-UEFI). Option specifics vary from system to system, but most have a setting to allow booting for Legacy BIOS, UEFI, or both. Some have an additional option for which mode gets priority. It\u0092s recommended to give Legacy BIOS priority since that mode is required for the conversion boot repair and to boot the system after the conversion. Save the changes.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Boot into BootIt BM.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Select <strong>Partition Work<\/strong> on the desktop (click the icon or tab to it and press Enter).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Select the GPT drive to convert using the <strong>Drives<\/strong> drop-down box. In most cases, this will be <strong>HD 0<\/strong> (the booting drive).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Make note of the partition names and sizes (names\/descriptions may be lost in the conversion and this will help you to know which is which). A standard Windows 8 installation will be used as an example:<br \/>\r\n<br \/>\r\n<ul>\r\n\t<li>Recovery, 300MiB, NTFS - (WinRE)<\/li>\r\n\t<li>EFI system partition, 100MiB, EFI System<\/li>\r\n\t<li>Microsoft reserved partition, 128MiB, GPT Entry<\/li>\r\n\t<li>Basic data partition, 122350MiB, NTFS (the Windows 8 partition)<br \/>\r\n<br \/>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n\t<li>Select the <strong>EFI system partition<\/strong>. Click the <strong>Delete<\/strong> button. Select the <strong>Clear boot sector<\/strong> option and then click <strong>OK<\/strong>.<br \/>\r\n<br \/>\r\n<strong>Note:<\/strong> Clearing the boot sector is recommended. Otherwise, if a Windows boot repair is performed at a later time it may undelete the partition and complicate the repair.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Select the <strong>Microsoft reserved partition<\/strong>. Click the <strong>Delete<\/strong> button. Click <strong>OK<\/strong>.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>If deleting the Recovery (WinRE) partition, select the <strong>Recovery<\/strong> partition. Click the <strong>Delete<\/strong> button. Click <strong>OK<\/strong>.<br \/>\r\n<br \/>\r\n<strong>Note:<\/strong> On OEM systems there may be more than one \"Recovery\" partition (e.g. one partition with WinRE and one with the OEM Recovery files). Also, per Step 1d, don't delete the Recovery (WinRE) partition if keeping it to retain the winre.wim file.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>If converting to MBR you will need to have four or fewer partitions on the drive. In the case of a standard Windows installation this isn't a problem (as above, you would only have one partition remaining). For the example OEM Windows 8 system shown above, you would probably want to delete partitions 2, 3, 4, 7, and (optionally) 1.<br \/>\r\n<br \/>\r\nDelete excess partitions as required to get the total to four or less. <strong>Note:<\/strong> This limit does not apply if converting the drive to EMBR (e.g. you plan on installing BootIt BM).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Click the <strong>Change Disk Type<\/strong> button and then click <strong>MBR<\/strong> (or <strong>EMBR<\/strong>, if using EMBR).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Partition names\/descriptions may be lost at this point. You may find it easier to rename them back to their original names (as previously noted). Do this by selecting the partition and clicking the <strong>Properties<\/strong> button. Then edit the <strong>Label<\/strong> and click <strong>OK<\/strong>.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Next, if you wish, you may slide and resize the Windows partition to use the unallocated space created by deleting the partitions.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Set the Windows partition active:<br \/>\r\n<br \/>\r\n<ul>\r\n\t<li>Click the <strong>View MBR<\/strong> button.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li><strong>EMBR Only:<\/strong> Use the <strong>Insert<\/strong> button to fill the partition table with the desired partitions. At the very least, the table must contain the Windows partition.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Select the Windows partition.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Click the <strong>Set Active<\/strong> button.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Click the <strong>Apply<\/strong> button.<br \/>\r\n<br \/>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n\t<li>Close the <strong>Work with Partitions<\/strong> window.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Insert the Windows repair media and reboot the computer into it. <strong>Note: <\/strong>The Windows repair media should be booted as a Legacy drive (not UEFI).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Open a Command Prompt:<br \/>\r\n<br \/>\r\nIf using the Windows installation media: Press <strong>Shift-F10<\/strong> to open the Command Prompt. <br \/>\r\n<br \/>\r\nIf using the Windows 7 Repair media: Select your language and keyboard (if prompted). A scan will be performed to find Windows installations. It will report problems found and offer to repair them. Click the <strong>No<\/strong> button to abort the auto-repair. Select the <strong>Use recovery tools...<\/strong> option and click <strong>Next<\/strong>. Click <strong>Command Prompt<\/strong>.<br \/>\r\n<br \/>\r\nIf using Windows 8.x\/10 Repair\/Recovery media: Select your language, click <strong>Troubleshoot<\/strong>, click <strong>Advanced options<\/strong>, click <strong>Command Prompt<\/strong>.<br \/>\r\n<br \/>\r\nIf using TBWinRE\/PE: The Command Prompt can be started from TBLauncher. <br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Find the drive letter assigned to the Windows partition. This should normally be <strong>C:<\/strong> since the Windows partition is set active and it's on the booting drive. Using the prompt, you can run <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>dir c:<\/strong><\/span>, <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>dir d:<\/strong><\/span>, etc. until you locate the correct partition. If you're using TBWinRE\/PE you can click on TBLauncher and press F4 to see a list of drive letter assignments. C: will be used for the Windows partition in these instructions - make sure to substitute the drive letter appropriate for your system.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>The next step is to configure the BCD file on the Windows partition. Standard installations of Windows (those from the Microsoft media) don't include the &#92;Boot folder or BCD on the Windows partition. However, OEM installations of Windows may include them and have it preconfigured to boot into Windows. You can determine if they exist by running the following command: <br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>dir \/a C:&#92;Boot&#92;BCD<\/strong><\/span><br \/>\r\n<br \/>\r\nThe output will show the BCD file if it exists or a \"File Not Found\" message if it doesn't. If the BCD file exists you have the choice of using it or deleting it and recreating a new one. Creating a new one is recommended since the existing file may prevent WinRE from functioning fully.<br \/>\r\n<br \/>\r\nTo delete an existing &#92;Boot folder and BCD file, run the following command:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>rd \/s \/q C:&#92;Boot<\/strong><\/span> <br \/>\r\n<br \/>\r\nTo rebuild\/create the Windows BCD, run the following command:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>bcdboot C:&#92;Windows \/S C:<\/strong><\/span><br \/>\r\n<br \/>\r\n<strong>Note:<\/strong> On Windows 8.x\/10 systems, if the computer isn't properly booted in Legacy BIOS mode you can force the Legacy BIOS booting files to be used by specifying the <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>\/F BIOS<\/strong><\/span> option when you run bcdboot. This usually is not necessary.<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>bcdboot C:&#92;Windows \/S C: \/F BIOS<\/strong><\/span><br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Copy the <strong>bootmgr<\/strong> file to the Windows partition by running the following command:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>copy C:&#92;Windows&#92;Boot&#92;PCAT&#92;bootmgr C:&#92;<\/strong><\/span><br \/>\r\n<br \/>\r\n<strong>Note:<\/strong> This step can normally be skipped on Windows 8.x\/10 systems since the file should already exist on the Windows partition. You can verify it exists by running the following command and finding it in the listing:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>dir \/a C:&#92;<\/strong><\/span> <br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Close the Command Prompt window and remove the repair media.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Reboot the computer.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Windows should boot up normally.<br \/>\r\n<br \/>\r\n<strong>Note:<\/strong> If Windows doesn't boot up successfully, verify that the Windows partition is set active, the BCD file exists, and bootmgr exists. If necessary, boot to the Windows repair media and do a Startup Repair (you may be prompted to run it after booting if a problem is detected).<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Enable the Windows Recovery Environment (WinRE):<br \/>\r\n<br \/>\r\n<ol type=\"a\">\r\n\t<li>Open an Administrator Command Prompt.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Run the following command:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>reagentc \/enable<br \/>\r\n<\/strong><\/span><br \/>\r\n<strong>Note:<\/strong> If there is an error enabling WinRE see the notes at the end of the article.<br \/>\r\n<br \/>\r\n<\/li>\r\n<\/ol>\r\n<\/li>\r\n\t<li>The conversion is complete. If desired, you can now proceed with installing BootIt BM. If you had previously enabled TBWinRE on the system it may now be disabled. Run TBWinRE again, if necessary.<\/li>\r\n<\/ol>\r\n<p>&nbsp;<\/p>\r\n<hr \/>\r\n<p><strong><span style=\"color: #ff5500;\">Notes:<\/span><\/strong><br \/>\r\n<br \/>\r\n<span style=\"color: #333399;\"><strong>Restoring Backup of Drive Created Prior to Conversion<\/strong><\/span><\/p>\r\n<p>If you restore the backup of the drive you created before the conversion and intend to boot it, you will need to enter the BIOS and enable support for UEFI booting. Otherwise, the drive will fail to boot.<\/p>\r\n<p><span style=\"color: #333399;\"><strong>WinRE Fails to Enable After Conversion<\/strong><\/span><\/p>\r\n<p>Enabling WinRE can fail for a number of reasons, including:<\/p>\r\n<ul>\r\n\t<li>The winre.wim file is missing or not at an expected location.<\/li>\r\n\t<li>WinRE only partially disabled or enabled.<\/li>\r\n\t<li>The configuration file (ReAgent.xml) contains invalid information.<\/li>\r\n<\/ul>\r\n<p>The following repair methods can be used before trying again to enable WinRE (Step 24, above):<\/p>\r\n<ul>\r\n\t<li>Sometimes all that's needed is to disable WinRE prior to enabling. Run the following commands at an Administrator Command Prompt:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>reagentc \/disable<\/strong><\/span><br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>reagentc \/enable<\/strong><\/span><br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>Make sure the <strong>winre.wim<\/strong> file exists in the original path (e.g. on the existing Recovery partition) or in the <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>C:&#92;Windows&#92;System32&#92;Recovery<\/strong><\/span> folder. Note that the file may be hidden (enable viewing of hidden\/system files, if necessary). If the file is missing you can copy it out of the backup image using TBIView or TBIMount.<br \/>\r\n<br \/>\r\nYou can determine if the original path is still being used by viewing the <strong>ReAgent.xml<\/strong> file and checking the <strong>path<\/strong> for the <strong>ImageLocation<\/strong>. The ReAgent.xml file is located in the <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>C:&#92;Windows&#92;System32&#92;Recovery<\/strong><\/span> folder and can be opened using Internet Explorer, Notepad, or WordPad. If using Notepad you will most likely want to enable word wrapping for easier viewing. Look for <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>&lt;ImageLocation path=<\/strong><\/span> and note the path value specified (e.g. <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>&lt;ImageLocation path=\"&#92;Recovery&#92;WindowsRE\"<\/strong><\/span>). If the original Recovery partition is no longer available you can create the path on the Windows partition and copy the winre.wim file into it. Then try enabling WinRE. In this example, you would copy winre.wim into the <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>C:&#92;Recovery&#92;WindowsRE<\/strong><\/span> folder.<br \/>\r\n<br \/>\r\n<\/li>\r\n\t<li>If neither of the above methods worked you can try resetting sections of the <strong>ReAgent.xml<\/strong> file. <br \/>\r\n<br \/>\r\n<strong>Note:<\/strong> On Windows 8.x\/10 systems you can try removing the ReAgent.xml file instead of editing it. It should be recreated when you run the command to enable WinRE. For example, you could rename ReAgent.xml to ReAgent_backup.xml before trying to enable WinRE.<br \/>\r\n<br \/>\r\nThis example will use WordPad to edit the file. Start an Administrator Command prompt and run the following command:<br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>write c:&#92;windows&#92;system32&#92;reagent.xml<\/strong><\/span><br \/>\r\n<br \/>\r\nEdit these sections to clear\/reset the values: WinreBCD, WinreLocation, ImageLocation, InstallState, WinREStaged. Leave other sections and settings unchanged. The example below is from an OEM Windows 8 installation (your file contents may be different). The indicated sections are shown with cleared\/reset values.<br \/>\r\n<br \/>\r\n<span style=\"color: #55bb55; font-family: Courier New, Courier, monospace;\"><strong>&lt;?xml version='1.0' encoding='utf-8'?&gt;<br \/>\r\n&lt;WindowsRE version=\"1.0\"&gt;<\/strong><\/span><br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>\u00a0\u00a0&lt;WinreBCD id=\"{00000000-0000-0000-0000-000000000000}\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;WinreLocation path=\"\" id=\"0\" offset=\"0\" guid=\"{00000000-0000-0000-0000-000000000000}\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;ImageLocation path=\"\" id=\"0\" offset=\"0\" guid=\"{00000000-0000-0000-0000-000000000000}\"\/&gt;<\/strong><\/span><br \/>\r\n<span style=\"color: #55bb55; font-family: Courier New, Courier, monospace;\"><strong>\u00a0\u00a0&lt;OsInstallLocation path=\"&#92;OKRbackup&#92;factory&#92;\" id=\"0\" offset=\"728680628224\" guid=\"{f0ea3b1a-8657-4f56-abd1-dfea687a2d2f}\" index=\"1\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;CustomImageLocation path=\"\" id=\"0\" offset=\"0\" guid=\"{00000000-0000-0000-0000-000000000000}\" index=\"0\"\/&gt;<\/strong><\/span><br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>\u00a0\u00a0&lt;InstallState state=\"0\"\/&gt;<\/strong><\/span><br \/>\r\n<span style=\"color: #55bb55; font-family: Courier New, Courier, monospace;\"><strong>\u00a0\u00a0&lt;OsInstallAvailable state=\"1\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;CustomImageAvailable state=\"0\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;IsAutoRepairOn state=\"0\"\/&gt;<\/strong><\/span><br \/>\r\n<span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>\u00a0\u00a0&lt;WinREStaged state=\"0\"\/&gt;<\/strong><\/span><br \/>\r\n<span style=\"color: #55bb55; font-family: Courier New, Courier, monospace;\"><strong>\u00a0\u00a0&lt;OperationParam path=\"\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;OsBuildVersion path=\"9200.16384.amd64fre.win8_rtm.120725-1247\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;OemTool state=\"1\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;BootKey state=\"0\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;IsServer state=\"0\"\/&gt;<br \/>\r\n\u00a0\u00a0&lt;ScheduledOperation state=\"4\"\/&gt;<br \/>\r\n&lt;\/WindowsRE&gt;<\/strong><\/span><br \/>\r\n<br \/>\r\nSave the file and close WordPad. Make sure the <strong>winre.wim<\/strong> file is in the <span style=\"color: #008800; font-family: Courier New, Courier, monospace;\"><strong>C:&#92;Windows&#92;System32&#92;Recovery<\/strong><\/span> folder. Then try enabling WinRE.<\/li>\r\n<\/ul>\r\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction This article provides methods to convert GPT drives (both data and Windows 7\/8.x\/10) to MBR or EMBR. The conversion can be helpful in cases where booting needs to be changed to Legacy (non-UEFI) mode. An example would be that you wish to install BootIt Bare Metal and set up multi-booting on the system. Note: [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"lsvr_kba_cat":[1817],"lsvr_kba_tag":[2127,2142,2140,2141],"class_list":["post-580","lsvr_kba","type-lsvr_kba","status-publish","hentry","lsvr_kba_cat-vista-win7-8-x-10","lsvr_kba_tag-windows","lsvr_kba_tag-windows-10","lsvr_kba_tag-windows-7","lsvr_kba_tag-windows-8-x"],"_links":{"self":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba\/580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba"}],"about":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/types\/lsvr_kba"}],"author":[{"embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/comments?post=580"}],"version-history":[{"count":5,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba\/580\/revisions"}],"predecessor-version":[{"id":7278,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba\/580\/revisions\/7278"}],"wp:attachment":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/media?parent=580"}],"wp:term":[{"taxonomy":"lsvr_kba_cat","embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba_cat?post=580"},{"taxonomy":"lsvr_kba_tag","embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba_tag?post=580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}