Here, MiniTool Partition Wizard can help recover deleted system reserved partition and EFI partition. Tip: As mentioned above, Windows can't boot after deleting system partition issue includes two situations: missing/no system reserved partition or accidentally deleted EFI partition Windows 10. That is to recover deleted system partition or fix boot information. It Is Possible to Fix Unbootable Windows Due to System Partition Deletionīut luckily, you still have a chance to make the unbootable Windows bootable again, and no reinstallation is required or at least reinstall without losing personal data. If you accidentally deleted EFI boot partition in Windows 10, Windows will be naturally unbootable due to missing boot files. When a computer is powered on and booted, UEFI firmware loads files stored on the EFI System Partition to start installed operating systems and various utilities. It contains the boot loaders or kernel images for all installed operating systems.
HOW TO CREATE BOOT PARTITION WITHOUT OS INSTALL
When you install Windows on a clean disk that is initialized to GPT, Setup will create an EFI partition (ESP). What Is EFI System Partition (UEFI + GPT) And you may receive error messages like BOOTMGR is missing or Operating System not found. If the active system reserved partition is lost, Windows will be unbootable since no BOOTMGR and BCD are found.
This partition holds the Boot Configuration Database (BCD), Boot Manager (BOOTMGR), Windows Recovery Environment and reserves space for the startup files which may be required by BitLocker, among which BCD and BOOTMGR are vital parts to start Windows.
When installing Windows 7/8/10 on a clean disk which is initialized to MBR, the setup will create a system reserved partition at the beginning of the hard disk and mark it active. What Is System Reserved Partition ( Legacy BIOS + MBR) Tip: Since there are 2 types of booting mode, namely Legacy BIOS + mbr and UEFI + GPT, we talk about this issue from 2 aspects.
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