Path: utzoo!utgpu!watmath!att!ucbvax!ANDREW.CMU.EDU!bh1e+ From: bh1e+@ANDREW.CMU.EDU (Brendan Gallagher Hoar) Newsgroups: comp.sys.apple Subject: (none) Message-ID: Date: 8 Aug 89 01:09:09 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 69 gnh-starport!jschober@pro-novapple.cts.com Subject: More HD stuff... Cc: Another annoying post by me. I hope you'll forgive me. Here are the tech specs on the drive I am having bad blocks appear on. As I have said, I can get bad blocks to appear on the ProDOS volumes I create on the HD approx. 80% that I copy Fastfont, Finder.Icons, or Rinky.bny to it. If it isn't ProDOS that is doing it (how can it create bad blocks on a HD???) creation of those specific files (due to length or something? Maybe file data being interpreted somehow not as data but rather as commands? Maybe the way the head of the HD has to move to create them?) makes the HD act up. Copying the files from 3.5s to RAMDISKs and back again cause no problems with those media. --- Sense data length = 31 Medium type = 0 Reserved = 0 Block descriptor length = 8 Density Code = 0 Num blocks (msb) = 1 Num blocks = 73 (tot. blks = 84254) Num blocks (lsb) = 30 Reserved = 0 Bl. Length (msb) = 0 Bl. Length = 2 Bl. Length (lsb) = 0 Page Code = 4 Page length = 18 Num cylinders (msb) = 0 Num cylinders = 3 (tot cyl. = 818) Num cylinders (lsb) = 50 Number of Heads = 4 Dev type code = 0 Dev type qualifier = 0 Revision level = 1 Reserved/Response data format = 1 Additional length = 61 Reserved = 0 Reserved = 0 Reserved = 0 Manufacturer = SEAGATE Product Identifier = ST251N HW Rev level = 0 Firmware Rev. level = 0 ROM Revision Level = 0 Reserved = 0 Last block available = 84253 Block Length = 512 This info was generated by info calls from SCSI Evaluator 1.00 on a Mac SE with the drive formatted at 1:3 interleave with only 1 partition. I tried the calls on the internal CMS 40 meg drive and the only differences I found were due to the storage size diff (CMS=40, SEAGATE=43) and th manufaturer's codes. The drive has been formatted about 13 times on the GS alone (3 times to figure out the best interleave is 1:5 for the GS). After every format, the drive has no media errors on read tests. I did give it an intesive write test, and it came away with no errors. ugh.