Here is an unusual find: a 33-year-old 100 MB SCSI hard drive that still boots in an old Mac and has no bad sectors.

This Conner Peripherals CP3100 drive is still in a Macintosh IIcx mounting bracket.  The previous owner split it into two 50MB partitions, which are called "Eyes" and "Snoot".  The drive has a third party driver, allowing it to boot in an older Mac.  I saw it boot in a Macintosh IIsi, and note that OS 7.1.1 is still installed on "Eyes".

I then moved the drive over to my my WIndows 7 testbed system with an Adaptec PCI SCSI host adapter.  It was recognized immediately.  Both the Adaptec host adapter and HD Tune verified that there are no bad sectors.

Buyer will receive the exact drive pictured here with its Mac IIcx mounting bracket and terminating resistors, but nothing else. 

I offer a 30 day return privilege and free USPS shipping to any U.S. zip code.