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本帖最后由 captain_g 于 2017-1-19 09:01 编辑
这一段对你的问题可能有所帮助:
On some Unified Extensible Firmware Interface (UEFI)-based computers, the firmware creates non-volatile random access memory (NVRAM) entries for local devices, such as a CD-ROM or hard disk drive when the computer boots. Bcdedit synchronizes the firmware namespace objects in NVRAM with the system boot configuration data (BCD). Bcdedit opens the system BCD store when you perform a bcdedit /set or /enum command. When bcdedit opens the BCD, it compares entries in NVRAM with entries in BCD. Entries in NVRAM that were created by the firmware that do not exist in BCD are added to the system BCD. When bcdedit closes the system BCD, any boot manager entries in BCD that are not in NVRAM are added to NVRAM. The bcdedit /import command copies all firmware namespace objects from system BCD into NVRAM.
If you perform multiple bcdedit /import operations, the NVRAM may contain multiple entries for the devices on the system, such as the CD ROM and hard disk. Multiple /import operations may result in many duplicate entries. The following command is used to enumerate the firmware namespace objects in BCD ... |
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