Re: Disk ECC errors

[MFreeman@vermithrax.sch.symbolics.com]

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    Date: Fri, 29 Jul 88 15:21:08 PDT
    From: lakin@csli.stanford.edu (Fred Lakin)
    To: TYSON@Warbucks.AI.SRI.COM
    cc: slug@Warbucks.AI.SRI.COM
    In-Reply-To: Mabry Tyson's message of Fri,
		 29 Jul 88 12:53 PDT <19880729195352.8.TYSON@ELCAPITAN.AI.SRI.COM>
    Subject: Re: Disk ECC errors

    Mabry,

    I'm now awaiting the third CDC368 disk for my 3645.

    Machine was delivered in beginning of Feb. It has been running 7.1
    all the time.

    FIRST DISK
    The first disk was replaced at the beginning of May, a prelim msg was
    "fatal disk error ... fatal ECC error". last msg before unbootable,
    about 2 weeks later, was "proceedable disk error".

    SECOND DISK
    June 14 on the new disk, "fatal disk error ... fatal ECC error".
    July 12 "fatal disk error ... fatal ECC error".

    And then from July 13 on, an unending seriers of "proceedable disk
    errors ... irrecoverable disk search OR irrecoveralbe disk error".

I was having problems similar to these on my 3645.  It turned out that
it wsn't a problem with the disk at all; the card slot for the xsq board
was out of alignment and the pins were not fitting properly.  Make sure
your boards are seated properly and check the pins in back to see if
they are maybe getting bent out of shape.

- mef

    Machine is now virtually unusable, wont complete the boot half the time,
    and then can only edit files and telnet ... ie can't load any addtional
    systems on it.

    if you need more info, msg me

    cheers, f