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STATUS_VOLMGR_EXTENT_OVERLAPS_EBR_PARTITION
STATUS_VOLMGR_EXTENT_OVERLAPS_EBR_PARTITION protects Extended Boot Record metadata in an MBR extended-partition layout. An EBR is part of the chain that describes logical drives, so treating its location as empty storage can make one or more logical volumes unreachable.
This is an MBR-specific structural condition. It is not applicable to a normal GPT partition array, and it should not be solved by overwriting the first sectors of an extended partition.
What to inspect
- Verify that the target disk is actually MBR and identify the extended partition and each EBR in its logical-drive chain.
- Check the proposed extent's start and end against EBR locations before writing any partition or volume metadata.
- Use a sector-level backup when repairing a damaged EBR chain; ordinary file backups may not preserve the partition structure.
Microsoft: MBR layouts with more than four partitions
Microsoft: IOCTL_DISK_SET_DRIVE_LAYOUT_EX
Microsoft: Volume Manager error codes
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