Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mcnc!thorin!clocs!davis From: davis@clocs.cs.unc.edu (Mark Davis) Newsgroups: comp.sys.ibm.pc Subject: Re: Maxtor and Miniscribe drive query Summary: Yes RLL, 1224 Keywords: specs needed 1024 or 1224 on XT 2190 Message-ID: <11331@thorin.cs.unc.edu> Date: 4 Jan 90 14:47:35 GMT References: <1342@mitisft.Convergent.COM> Sender: news@thorin.cs.unc.edu Reply-To: davis@clocs.cs.unc.edu (Mark Davis) Organization: University Of North Carolina, Chapel Hill Lines: 63 Sorry to post, but mail bounced. ----- Transcript of session follows ----- 421 Host sun-bb.corp.sun.com not found for mailer relay. 550 ... Host unknown In article <1342@mitisft.Convergent.COM> Phil Burton writes: >I would like the net's help to get specs on these drives: > >Miniscribe 8438. Is this an RLL or MFM drive? RLL, see below > >Maxtor 2190. Is this 1024 or 1224 cyliners? 1224, see below. > >Supposedly, a Maxtor 1140 is just a 2190 that has been tested to "only" 918 >cylinders. Does anyone run an 1140 to 1024 (1224 ???) cylinders? > >Comments? > >Phil Burton I have also heard the about Maxtor 1140 -> 2190 possibility. I have no first hand knowledge. The Western Digital Bulletin Board has geometry for many drives in a file called DRVTALL.TXT. The number for the BBS is 714-756-8176. Here is what it contains for your drives: -----------------------------------------------------------10/2/89----------- | CAP = CAPACITY IN FORMATTED MEGABYTES | CYC = MAXIMUM NUMBER OF CYLINDER | H = NUMBER OF DATA HEADS | RWC = START REDUCED WRITE CURRENT | IF IT'S = CYC + 1 THEN IT IS NOT USED | WPC = START WRITE PRECOMP | IF IT'S = CYC + 1 THEN IT IS NOT USED | ENC = ENCODING METHOD R=RLL, M=MFM | RATE = TRANSFER RATE IN MEGABITS/SEC | ACCESS= AVERAGE ACCESS TIME | SPT = SECTORS/TRACK X 512 bytes | FH = FULL HIGH FORM FACTOR | HH = HALF HIGH FORM FACTOR | R = RLL (run length limited) | N = NRZ (non return to zero) | M = MFM (modified frequency modulation) | SA = STAND ALONE | Z = ZBR ------------------------------------------------------------------------------ MAXTOR 408-432-1700 ------------------------------------------------------------------------------ MODEL ST-506 MFM CAP CYC H RWC WPC ENC RATE ACCESS SPT COMMENTS XT-1140 5.25 FH 119 918 15 919 919 M 5 27 MS 17 XT-2190 5.25 FH 159 1224 15 1225 1225 M 5 29 MS 17 ------------------------------------------------------------------------------ MINISCRIBE 303-651-6000 ------------------------------------------------------------------------------ MODEL AT CAP CYC H RWC WPC ENC RATE ACCESS SPT COMMENTS ST-506 RLL 8438 3.5" 32 615 4 616 128 R 7.5 68 MS 26 ------------------------------------------------------------------------------ Hope this helps - Mark (davis@cs.unc.edu or uunet!mcnc!davis)