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Path: sserve!newshost.anu.edu.au!munnari.oz.au!uunet!mcsun!Germany.EU.net!gmdtub!bsd386!ats From: ats@bsd386.first.gmd.de (Andreas Schulz) Newsgroups: comp.os.386bsd.questions Subject: Re: major scsi problem. sd0: medium error block .... Message-ID: <3606@bigfoot.first.gmd.de> Date: 13 Jun 93 11:16:36 GMT References: <1993Jun12.074233.9676@mnemosyne.cs.du.edu> Sender: news@bigfoot.first.gmd.de Organization: GMD-FIRST Lines: 33 In article <1993Jun12.074233.9676@mnemosyne.cs.du.edu> smace@nyx.cs.du.edu (Scott Mace) writes: >I booted up today and encountered this on my usr partition >sd0: medium error block no. 336081 (decimal) > >how to I fix this. fsck doesn't fix it. I thought that scsi drives >relocated bad blocks >my drive is a Maxtor LXT-340s and an Adaptec 1542B. This looks like a real bad block on the disk. fsck only fixes errors in the filesystem, but no hardware errors. Scsi drives can automagically relocate bad blocks, but in most cases, they are not programmed to do so by default. Because you better want to see such error, to see if yoour drive goes bad. If this happens again with more blocks, it is the time to think about a new drive :-(. The way to get rid of this error, is to make a backup of the data on the drive, the boot DOS and start debug, make a "g=dc00:6" (i hope this is the correct address, i don't have an adaptec manual handy), and choose in the menue that should pop up, first the correct drive and then start a verify drive. This should check all blocks on the drive and ask you if it find a bad block to correct it. After that restart unix again in single user mode and run a fsck on all partitions, look for errors, and then decide, what things to do. If you get an error in the fsck, you will see, what has gone south, if you don't get any error, you must search, where you lost this block. If you have a good backup :-) you can simply restore all suspect data. -- ATS ( ats@first.gmd.de or ats@cs.tu-berlin.de ) Andreas Schulz GMD-FIRST O-1199 Berlin-Adlershof Rudower Chaussee 5 Gebaeude 13.7 Tel: +49-30-6392-1856 Germany/Europe