Seagate ST-412 10MB Demo
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- This is a demo of a Seagate ST-412 10MB. This is one of my oldest hard drives and one of the first consumer hard drives made by Seagate in the 5.25 Full Height format. The other being the ST-506.
This drive is connected to an 8-bit Xebec MFM controller card. The combination was rather slow even by later MFM standards and it was very common to upgrade PC / XT class computers with a faster Western Digital controller card.
C 306
H 4
S 17
MFM encoding
DOS 3.3 start
Norton utilities 6 System Info performance test
Norton Disk Doctor to show no uncorrectable sectors
Park the heads
shutdown
This setup was removed from my IBM 5160 for the same reason as most people did, faster drive and better controllers. I kept the drive and controller in the event I wish to put my XT back to original condition. It was reformatted with the DOS debug program having to enter everything manually since the controller does not have a ROM based format utility like newer cards. (What a nightmare)
The drive had been running for three hours prior to the video doing diagnostics and anything I could to get the best performance out of it. Could not get past the 90KB per second transfer. I does better on a Western Digital controller and 286 interface. Had it past 220KB per second.
I remember this drive from the first PC I ever owned- a 5271, which had the extended 3270 keyboard and 5272 colour display.
This is out of my IBM 5160 that is on my shelf with an ST-251. When I start it up next after sitting for 18 months, it will grumble with loud bearings for about 10 minutes and quiet down after. I have it on my channel from the last time I first started it out of storage.
Very cool, thank you for sharing!
One day I will plug it into my 5160 again. This is my clone 286 I had out doing other tests on various old parts.
Stuff like this is before my time but the history to me is fascinating. Really makes me appreciate the machines we have today!
Do you know what the peak rpm would've been on a drive like this? Based on your comments at the end I realize the controller would cause that to vary.
@@NathanTaylor1 The RPM is 3600 on the MFM drives. Data transfer speeds vary depending on the controller and the system it is installed in. This early drive was still faster than a 360 KB 5.25 floppy drive of the same era
I'm amazed how quiet that one is! Really nice bearings and stepper on that one!
This is the same drive that you commented about it needing oil on the bearings. It quieted down after running for a few hours. When I first bring it out of storage it is always loud.
@@matthewsvideos8235 Nice that at least the bearings aren't permanently sealed like most IDE drives. One of those with bad bearings little chance you will get them to be better.
@@cdos9186 I think these are sealed, but this old drive needs some heat to loosen up the lubrication.
@@matthewsvideos8235 I've even had 3.5" drives that were sitting act that way, drive can make some crazy noises from the bearings after sitting for so long and settling. Definitely a good running and exercising of the drive will help quiet down the bearings like you mentioned especially after long storage.
@@cdos9186 I will be finding out soon with my 3.5 drives. Soon setting up a test rig for some newer drives now that the modern computer jobs are done for now.