Heatkit 5 1/4 floppies

From: allisonp_at_world.std.com <(allisonp_at_world.std.com)>
Date: Thu Apr 8 10:13:29 1999

> I used to work for Burroughs and they had a computer that used 8"
> floppys that spun continously. Burroughs said to replace the disks every
> 100 hours. I have no idea how long they would actually run before failing.
> Does anyone know? I have a CPM machine that spins it's 5 1/4" disk
> continously but I haven't run it enough for a disk to fail.

I have 8" on my CPM crate and that spins 100% (most 8" do) with the head
loaded and I have disks that are years old (thousands of hours).

I also tend to run the motors full time on 5.35 drives to save spin up
time and hed load time (it can save a lot of delay!). I haven't had
problems with media failure that was related to doing this.


A dirty or damaged head however can kill a disk in moments as it can
lterally scrape the media off!

Allison
Received on Thu Apr 08 1999 - 10:13:29 BST

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