BCDEDIT.exe (Vista+) – Windows CMD Command
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Manage Boot Configuration Data (BCD) data stores.
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Syntax BCDEdit /Command [Argument1] [Argument2] ... Key /? commmand To display detailed help for a particular command, run bcdedit /? command, where command is the name of the command you are searching for more information about. e.g. bcdedit /? createstore Store commands: /createstore Creates a new empty boot configuration data store. The created store is not a system store. /export Export the contents of the system store into a file. This file can be used later to restore the state of the system store. Valid only for the system store. /import Restore the state of the system store by using a backup data file previously generated with /export. This command deletes any existing entries in the system store before the import takes place. Valid only for the system store. /store This option can be used with most BCDedit commands to specify the store to be used. If this option is not specified, then BCDEdit operates on the system store. Running the bcdedit /store command by itself is equivalent to running the bcdedit /enum active command. /sysstore Set the system store device. This only affects EFI-based systems. It does not persist across reboots, and is only used in cases where the system store device is ambiguous. Operating on entries in a store: /copy Make a copy of a specified boot entry in the same system store. /create Create a new entry in the boot configuration data store. If a well-known identifier is specified, then the /application, /inherit, and /device options cannot be specified. If an identifier is not specified or not well known, an /application, /inherit, or /device option must be specified. /delete Delete an element from a specified entry. /mirror Create a mirror of entries in the store. Changing entry options: /deletevalue Delete a specified element from a boot entry. /set Set an entry option value. List current settings: /enum [type | id] [/v] List entries in a store. Types: ACTIVE, FIRMWARE, BOOTAPP, BOOTMGR, OSLOADER, RESUME, INHERIT, ALL The /enum option is the default value for BCEdit, so running the bcdedit command without options is equivalent to running the bcdedit /enum active command. /v Verbose mode. Usually, any well-known entry identifiers are represented by their friendly shorthand form. Specifying /v as a command-line option displays all identifiers in full. Running the bcdedit /v command by itself is equivalent to running the bcdedit /enum active /v command. Controlling the boot manager: /bootsequence Specifies a one-time display order to be used for the next boot. This command is similar to the /displayorder option, except that it is used only the next time the computer starts. Afterwards, the computer reverts to the original display order. /default Specifies the default entry that the boot manager selects when the timeout expires. /displayorder Specifies the display order that the boot manager uses when displaying boot options to a user. /timeout Specifies the time to wait, in seconds, before the boot manager selects the default entry. /toolsdisplayorder Specifies the display order for the boot manager to use when displaying the Tools menu. Emergency Management Services options: /bootems Enable or disable Emergency Management Services (EMS) for the specified entry. /ems Enable or disable EMS for the specified operating system boot entry. /emssettings Set the global EMS settings for the computer. /emssettings does not enable or disable EMS for any particular boot entry. Debugging: /bootdebug Enable or disable the boot debugger for a specified boot entry. Although this command works for any boot entry, it is effective only for boot applications. /dbgsettings Specifies or displays the global debugger settings for the system. This command does not enable or disable the kernel debugger; use the /debug option for that purpose. To set an individual global debugger setting, use the bcdedit /setdbgsettings type value command. /debug Enable or disable the kernel debugger for a specified boot entry. /hypervisorsettings Set the hypervisor parameters. Undocumented: /loglevel level [/raw] level is one of the following: t : trace (stdout) i : info (stdout) w : warning (stderr) e : error (stderr) /raw : Display extra details for the device and osdevice fields. Normal display: device partition=\Device\HarddiskVolume2 osdevice partition=C: With /raw device PartEx 2800000 HD MBR Sig:151767d7 osdevice PartEx 3ed200000 HD MBR Sig:151767d7 |
BCDEdit is a command-line tool for managing Boot Configuration Data (BCD). BCD files provide a store that is used to describe boot applications and boot application settings.
A normal shutdown and reboot are necessary to ensure that any modified BCDEdit settings are flushed to disk.
BCDEdit is included in the %WINDIR%\System32 folder.
BCDEdit is limited to the standard data types and is designed primarily to perform single common changes to BCD.
Some common BCD operations, such as recovering a partition or setting up a new PC’s system partition, maybe more easily accomplished by using BCDBOOT.
Administrative privileges are required to use BCDEdit to modify Boot Configuration Data.
Examples
This command will enable the system to trust Windows Insider Preview builds that are signed with certificates that are not trusted by default:
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Bcdedit /set {bootmgr} flightsigning on Bcdedit /set flightsigning on |
Reboot after running the command.
To turn off flightsigning
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Bcdedit /set {bootmgr} flightsigning off Bcdedit /set flightsigning off |
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