Windows
Where Is the Windows Boot Configuration Data?
Windows BCD boot store location on the EFI partition and the bcdedit tool that edits it.
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The Boot Configuration Data store lives as a BCD file on the EFI system partition (or Boot folder on legacy BIOS). bcdedit is the supported editor.
File copies across machines break booting. Identifiers embed disk signatures, so edits must happen in place with the proper tools.
Where Windows stores this, by platform
Windows
\EFI\Microsoft\Boot\BCD
EFI boot store path (drive letter varies; mount the ESP to inspect). Legacy BIOS uses C:\Boot\BCD. Edit with bcdedit elevated, never by file copy.
Frequently asked questions
How do I repair or edit boot entries?
Use bcdedit from an elevated prompt, or boot recovery media for offline repair. Never copy BCD files between machines; identifiers are machine-specific.
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