Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!ll-xn!ames!sdcsvax!brian From: brian@sdcsvax.UCSD.EDU (Brian Kantor) Newsgroups: comp.sys.att Subject: Re: need help: I can't reboot my unix pc Message-ID: <3476@sdcsvax.UCSD.EDU> Date: Fri, 17-Jul-87 10:52:44 EDT Article-I.D.: sdcsvax.3476 Posted: Fri Jul 17 10:52:44 1987 Date-Received: Sat, 18-Jul-87 14:03:12 EDT References: <243@uscacsc.UUCP> Reply-To: brian@sdcsvax.UCSD.EDU (Brian Kantor) Distribution: na Organization: UCSD wombat breeding society Lines: 27 We had a Unix-PC here that exhibited somewhat similar problems; it seemed as though the hard drive had crashed and burned. It had been turned off for the first time in a long time, and then when it was turned back on, the hard drive was dead. Turned out that what had happened was that the rotation brake pad on the hard drive had gotten gooey from heat, and when the drive was turned off, the brake pad had done its job of stopping rotation all right, but had then cemented itself to the brake surface when things cooled down. All I had to do was pry it loose. The drive worked ok after that, and everything seems to still be running ok. The brake is a small composite material pad at the end of a solenoid shaft on the bottom of the drive. When power is on, the solenoid holds the brake pad away from the shiny wheel on the shaft. When power is removed from the drive, the solenoid releases the shaft, and a spring pushes the pad against the wheel. It's all outside the sealed compartment and real easy to get at, once you remove the drive from the system. It might be worth checking to see if this has happened in your case. Brian Kantor UCSD Office of Academic Computing Academic Network Operations Group UCSD B-028, La Jolla, CA 92093 USA