MBRbasierte

MBRbasierte is a German adjectival form meaning "MBR-based," commonly used to describe storage layouts, boot processes or systems that rely on the Master Boot Record (MBR). As a partitioning and boot scheme introduced in the early IBM PC era, MBR stores boot code and a small partition table in the first sector of a disk. MBRbasierte configurations are widely compatible with legacy BIOS firmware and older operating systems.

Technically, MBR uses a 32-bit addressing scheme for partitions, which limits addressable disk space to approximately 2 TiB (about 2.2 TB) when 512-byte sectors are used. It supports up to four primary partitions; using an extended partition allows creation of additional logical partitions. The MBR's simplicity and long-standing support make it useful for older hardware and certain recovery scenarios.

Limitations and risks associated with MBRbasierte systems include the size limit, the constrained partition table, and vulnerability of the single-sector MBR to corruption or malicious modification (bootkits). Modern systems and newer firmware (UEFI) typically prefer the GUID Partition Table (GPT), which overcomes these constraints and adds redundancy and larger disk support.

Management and migration tools for MBRbasierte disks include fdisk, parted and platform-specific utilities; conversion to GPT is supported by many operating systems but requires care and backups. The term is mainly descriptive in technical contexts distinguishing legacy MBR setups from GPT/UEFI-based approaches.