Otherwise, you’ll encounter this “BOOTMGR is compressed Press Ctrl+Alt+Del to restart” error on Windows 10/11 startup. But since the system boot sector code does not have the ability to decompress files by itself, the BOOTMGR file, an important part of the booting process, should never be compressed. This is often done to reduce disk space usage. We have discussed earlier that file compression allows PC users to minimize the size of files, folders, and programs. The configuration data for BOOTMGR is usually located in the Boot Configuration Data or BCD store. When accessed, it displays the OS selection options after loading the boot configuration data. What Is BOOTMGR is compressed Error on Windows 10/11?īOOTMGR is a Windows utility designed to manage boot sequence order. There are two easy solutions to fix the error. If you get the ‘BOOTMGR is compressed’ error message, you do not need to worry. It can also be triggered by a corrupted or missing MBR, Boot Sector, or BCD. This BOOTMGR error can be caused by several factors and not just when the file BOOTMGR is compressed. About Outbyte, uninstall instructions, EULA, Privacy Policy. Compatible with: Windows 10/11, Windows 7, Windows 8
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