bwhite@oucsace.cs.OHIOU.EDU (Bill White) (02/25/90)
I have an ICD host adaptor with an Adaptec 4070 controller and a Seagate 277R-1 (?) 28ms 65meg RLL hard drive. My problem is I keep getting a <SENSE $11> code. No bad sectors, no data errors, just the sense $11. It happens on maybe one or two tracks on two (out of five) partitions, but it makes me wonder if something might be wrong. Incidentally, it's always in the same place, so that rules out cable errors or such. Anyone know what this means? The Adaptec 4070 manual says something about an "unrecoverable data field error" or some such nonsense, but I have yet to lose any data whatsoever, even after performing repeated read-write-verify cycles on some of the sectors in question. BTW, why are all the tracks initialized to "lllllllll"...? Bill White bwhite@oucsace.cs.ohiou.edu
rich@lakesys.lakesys.com (Richard Dankert) (02/27/90)
In article <1152@oucsace.cs.OHIOU.EDU> bwhite@oucsace.cs.OHIOU.EDU (Bill White) writes: > > I have an ICD host adaptor with an Adaptec 4070 controller and >a Seagate 277R-1 (?) 28ms 65meg RLL hard drive. My problem is I keep >getting a <SENSE $11> code. No bad sectors, no data errors, just the >sense $11. It happens on maybe one or two tracks on two (out of five) >partitions, but it makes me wonder if something might be wrong. > Incidentally, it's always in the same place, so that rules out >cable errors or such. Anyone know what this means? The Adaptec 4070 >manual says something about an "unrecoverable data field error" or some >such nonsense, but I have yet to lose any data whatsoever, even after >performing repeated read-write-verify cycles on some of the sectors in >question. > BTW, why are all the tracks initialized to "lllllllll"...? > > Bill White > bwhite@oucsace.cs.ohiou.edu Bill; According to my manuale for the ST Host Adaptor frm ICD, sense codes is explained as follows. /* $11 Unrecovered read error of data blocks. The operation was terminated with an unrecovered error condition probably caused by a flaw in the medium. This indicates that there is a problem, probably, a bad sector. You should run a program called Clean_up ST, to check for and map out bad sectors. If this message appears while you are running Clean_up ST but no errors are reported by the program, then there are probably bad sectors that have already been mapped out. Similarly, any program that reads sectors with out checking to see which are marked bad in the FAT may cause this message to appear, although there is no problem. If new bad sectors begin to appear, and it becomes necessary to map them out often , there is probably a problem with the mechanism. */ I looked for the program that they mention, and have yet to find Clean_up ST anywhere on the disks provided with the host adaptor/controller. rich..... UUCP: rich@lakesys.lakesys.COM {always .... }
buggs@cup.portal.com (William Edward JuneJr) (02/28/90)
> I have an ICD host adaptor with an Adaptec 4070 controller and >a Seagate 277R-1 (?) 28ms 65meg RLL hard drive. My problem is I keep >getting a <SENSE $11> code. No bad sectors, no data errors, just the >sense $11. You NEED an OMTI 3527a controller! I too was experiancing the same problem. Even zeroing the partitons and then eventually reformatting! I really don't know the differences, but I here the Adaptec does do 'low level' SCSI, but goes through DOS?????? I dunno, all I know, it works GREAT, now! ED June
matthews@umd5.umd.edu (Mike Matthews) (03/01/90)
In article <1715@lakesys.lakesys.com> rich@lakesys.UUCP (Richard Dankert) writes: [stuff deleted] > I looked for the program that they mention, and have yet to find >Clean_up ST anywhere on the disks provided with the host adaptor/controller. > >rich..... >UUCP: rich@lakesys.lakesys.COM {always .... } Cleanup is a commercial product; you have to pay for it. I think the last price was $40, but it might be $30. It only works if you have an ICD host adaptor. I have it, and it's great. Unfortunately, I will be leaving ICD in favor of a BMS200 soon (I have the BMS now; mounting it is reeeal difficult with my current case, so I have to get a new one <I want my extra DMA port accessible>). I wonder what Hard Disk Sentry is like.. Mike
bwhite@oucsace.cs.OHIOU.EDU (Bill White) (03/01/90)
As it turns out, the <sense $11> always occurs on tracks where a bad sector exists (but has been mapped out). So I would suppose that it is in fact that bad sector that's causing the problem, and I'm just getting the sense code for the entire track. Thanks for your help. BTW: Cleanup reported no errors. Bill White bwhite@oucsace.cs.ohiou.edu
buggs@cup.portal.com (William Edward JuneJr) (03/02/90)
>I wonder what Hard Disk Sentry is like.. >Mike I have both HD Sentry & CleanUp. I trust CleanUp better than HD Sentry when it comes to findin' faults. HD Sentry, BTW, also optimises<sp?>. Ed June
bwhite@oucsace.cs.OHIOU.EDU (Bill White) (03/05/90)
In article <27394@cup.portal.com>, buggs@cup.portal.com (William Edward JuneJr) writes: > > You NEED an OMTI 3527a controller! I too was experiancing the same problem. > Even zeroing the partitons and then eventually reformatting! I really > don't know the differences, but I here the Adaptec does do 'low level' > SCSI, but goes through DOS?????? I dunno, all I know, it works GREAT, now! > > ED June Actually, I found it doesn't make a shred of difference. The sense code $11 is just because there's a bad sector on the *track*. True, it's ugly, but it doesn't cause any problems. Besides, I couldn't find an OMTI controller. At least not for $120, which is what I got the Adaptec for. True, SCSI mapping would be nice, but then again, that'd make me lose a TRACK for every bad sector (wasteful IMHO). Besides, can you imagine how much time backing up and restoring a 65 meg hard drive would take??? (please, don't bug me about backups. Most of the files on the hard drive aren't going to change; so I do file backups rather than image backups). *-----------------------------------------------------------------------* * Bill White Internet: bwhite@oucsace.cs.ohiou.edu * * 614-592-1619 Bitnet: TUTOR1@OUACCVMB.BITNET * *-----------------------------------------------------------------------* * MURPHY'S FIRST COROLLARY: * * Nothing is as easy as it looks. * *-----------------------------------------------------------------------*
obryan@gumby.cc.wmich.edu (Mark O'Bryan) (03/11/90)
In article <1184@oucsace.cs.OHIOU.EDU> bwhite@oucsace.cs.OHIOU.EDU (Bill White) writes: > > which is what I got the Adaptec for. True, SCSI mapping would be nice, > but then again, that'd make me lose a TRACK for every bad sector (wasteful > IMHO). Besides, can you imagine how much time backing up and restoring a Actually, I don't believe that's true. At least, on my 105 meg Conner SCSI drive there are 34 physical sectors per track, with 33 of them available for data. I.e., there's a spare sector on each track, in addition to the spare tracks that all drives have. Not only do you not lose an entire track due to one bad sector, you also avoid a per- formance hit due to having to seek to a spare track. I'm not sure if this is the case for all SCSI drives or not. I suppose it could depend on the particular implementation of the smart controller imbedded in your SCSI drive. You might want to check to see which way your individual drive handles it. -- Mark T. O'Bryan Internet: obryan@gumby.cc.wmich.edu Western Michigan University Kalamazoo, MI 49008