Apple Macintosh Hard Disk 20SC for 512K or Plus [Dutch OS] - Computer - With replacement box

Apple Macintosh Hard Disk 20 (20SC) – Model M0132Z | Made in USA | Tested & Working

Please carefully read all the information and review all photos to assess condition and details before bidding.

Offered here is an original Apple Macintosh Hard Disk 20 (20SC) — one of Apple’s earliest external hard drives and a crucial accessory for the first generations of Macintosh computers.
Introduced in the mid-1980s, the Hard Disk 20 transformed the Macintosh experience by offering fast, reliable mass storage at a time when floppy disks were the norm. Today, it is a highly collectible peripheral, perfect for restoring an early Mac setup or as a display piece in a vintage Apple collection.

// Item Details
– Product: Macintosh Hard Disk 20 / 20SC
– Model: M0132Z
– Identifier: F6120DCM0135Z
– Capacity: 20 MB
– Made in USA

// Compatibility
– Designed for use with Macintosh 512K (via the external hard disk port)
– Also compatible with Macintosh Plus
– Drives can be daisy-chained, allowing multiple units to be connected together to expand total storage capacity

// Condition & Functionality
– Fully tested and working
– Drives power on correctly and boot as expected

// Software Information
– This hard disk contains a Dutch-language operating system
– Installed software and games are mostly in English

// Cosmetic Condition
Please note that, as expected for vintage hardware of this age, the unit shows normal signs of use. This includes surface scratches, small marks, and spots, as well as typical yellowing of the plastic caused by long-term UV exposure (a natural reaction of bromine used in the original materials). These cosmetic characteristics are consistent with age and do not affect functionality. Buyers should expect visible wear and are kindly asked to review all photos carefully.

// Important Usage Advice (Please Read Carefully)
Based on extensive experience with vintage hard drives:
– It is strongly recommended NOT to reformat the drive
– Vintage drives often fail to boot or become unstable after formatting
– The drives are best used as-is, preserving the existing system installations
– You can safely add new data to the hard disks without issues

// Collector’s Note
Working examples of the Macintosh Hard Disk 20 are becoming increasingly rare, especially tested units with intact system installations. The ability to daisy-chain multiple drives adds both practical and historical value.

// A Rare Early Macintosh Accessory
Whether you are restoring an original Macintosh 512K or Plus, expanding storage in a period-correct way, or displaying an iconic piece of early Apple engineering, this Hard Disk 20 represents a defining moment in Macintosh history.

// Illustrative Purpose Only
The Macintosh Plus ED computer shown in the photos is NOT included in this listing. It is displayed for illustrative purposes only and solely to demonstrate that the hard disk is tested and working.

// A Perfect Holiday Addition
This classic Macintosh Hard Disk 20 is more than just storage — it’s a genuine piece of early Apple history. Whether placed next to a compact Mac or displayed as part of a collection, it makes a wonderful and nostalgic holiday acquisition for any vintage Macintosh enthusiast.