Path: utzoo!utgpu!attcan!uunet!oddjob!ncar!ames!pasteur!ucbvax!decwrl!decvax!spray!anson From: anson@spray.CalComp.COM (Ed Anson) Newsgroups: comp.sys.mac Subject: Re: disk squeak Message-ID: <2401@spray.CalComp.COM> Date: 4 Aug 88 22:22:29 GMT References: <5635@batcomputer.tn.cornell.edu> <61185@sun.uucp> <2937@utastro.UUCP> <4482@mit-vax.LCS.MIT.EDU> <1831@iscuva.ISCS.COM> <7627@dcatla.UUCP> Reply-To: anson@spray.UUCP (Ed Anson) Distribution: comp Organization: CalComp, A Lockheed Company, Hudson, NH, USA Lines: 23 In article <7627@dcatla.UUCP> dxjsb@sunb.UUCP (Jack S. Brindle) writes: > >jimc@iscuva.ISCS.COM (Jim Cathey) writes: >> The traditional cause of hard disk squeal is not the bearings, but a static >> discharge brush pressed against the spindle of the drive. The 'fix' is > >You might want to think twice before doing this, and be sure you back up the >disk real well if you decide to do it. I don't know about your disk, but this brush is not universally required. I effectively removed it from my DataFrame 20 a couple of years ago, and it has worked flawlessly (and quietly) since. I seem to recall that it was the manufacturer that recommended this operation. For what it's worth, I didn't actually remove the brush. I simply bent back the copper so that the operation would be reversible. I would recommend that approach, in addition to a full backup. Of course, a full backup is always recommended, anyway. -- ===================================================================== Ed Anson, Calcomp Display Products Division, Hudson NH 03051 (603) 885-8712, anson@elrond.CalComp.COM