Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!qt.cs.utexas.edu!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!bagate!cbmvax!cbmehq!cbmger!alpine!gothic!andy From: andy@gothic.uucp (Andreas Hofbauer) Newsgroups: comp.sys.amiga.hardware Subject: Re: QUANTUM PRO105s - Need help with MontList Message-ID: Date: 28 Jun 91 20:30:38 GMT References: <1991Jun26.064822.3223@ericsson.se> Organization: bsc bueroautomation AG (ECG001) Lines: 33 In article jdp@caleb.UUCP (Jim Pritchett) writes: >In article <1991Jun26.064822.3223@ericsson.se> etxpihl@texas.ericsson.se (DEE Tomas Pihl) writes: >> How many heads has the HD? >> How many cylinders has the HD? >> How many sectors/track has the HD? > Surfaces = 6 > BlocksPerTrack = 34 > LowCyl = 1 > HighCyl = 1004 Actually under SCSI terms the number of sectors/blockspertrack/lowcyl/highcyl doesn't really matter, because SCSI addresses data on the medium with logical block numbers. The Quantum PRO 105 S has a formatted capacity of 205,074 blocks of 512 bytes each, which are addressed as block numbers from 0 to 205,073. Thus, you may enter anything for surfaces/etc... as long as you result with less than 205,074 blocks. The number of blocks computes as NumBlocks = Surfaces * BlocksPerTrack * (HighCyl - LowCyl + 1); Physically the Quantum PRO 105 S drive has 1,019 data cylinders and 6 data heads. It has 2 distinct data zones: The outer zone is 831 cylinders large and stores 35 blocks per track, the inner zone has 188 cylinders with 28 blocks per track. These include blocks used for remapping, and are thus not available for data storage. As you see, you cannot match your mountlist with the physical layout on the drive. _ --(_) | | Andreas Hofbauer, Software Designer |bsc| bueroautomation AG (ECG001) ---