Syntax pattern from Microsoft Learn; replace placeholders and choose only one documented alternative before use.
refsutil fixboot <drive> <MajorVersion> <MinorVersion> <ClusterSize> [-f] [-w <Dir>] [-smr <SMRBandSizeInMB>] [-x]refsutil fixboot command
The `refsutil fixboot` command repairs or updates the boot sector of a specified ReFS (Resilient File System) volume. This guide lists the documented syntax and parameters for refsutil fixboot; check Microsoft Learn for version, role and execution-context requirements.
Documented syntax
refsutil fixboot <drive> <MajorVersion> <MinorVersion> <ClusterSize> [-f] [-w <Dir>] [-smr <SMRBandSizeInMB>] [-x]The linked Microsoft Learn article is the upstream authority. Availability may depend on Windows release, role, optional feature or interactive tool context.
Syntax pattern
Parameters, options and clauses
| Option / clause | Description |
|---|---|
<drive> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
<MajorVersion> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
<MinorVersion> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
<ClusterSize> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
-f | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
-w | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
<Dir> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
-smr | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
<SMRBandSizeInMB> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
-x | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.