2014_5001@uwovax.uwo.ca (08/23/89)
I have a question (problem??) with my sider hard drive with my //e. I have two ProDos partitions, one of which contains only a 13 meg. file for use with my PC Transporter card (the MsDos hard drive file). I recently tried to reformat that partition, but when I do an initialize partition on it, it reports about 1 megabyte less 'blocks free' than it does 'total blocks'. I have heard of needed directory tree space, but a megabyte??!!! Does anyone know what could be wrong - I want my megabyte back (it was there before)!!! - Pat Surry\ c/o: -- Alexander Pruss, at one of: Department of Applied Mathematics, Astronomy, Mathematics, or Physics University of Western Ontario pruss@uwovax.uwo.ca pruss@uwovax.BITNET A5001@nve.uwo.ca
dlyons@Apple.COM (David Lyons) (08/25/89)
In article <3645@uwovax.uwo.ca> 2014_5001@uwovax.uwo.ca writes: >I have a question (problem??) with my sider hard drive with my //e. I have >two ProDos partitions, one of which contains only a 13 meg. file for use >with my PC Transporter card (the MsDos hard drive file). I recently tried to >reformat that partition, but when I do an initialize partition on it, it >reports about 1 megabyte less 'blocks free' than it does 'total blocks'. I >have heard of needed directory tree space, but a megabyte??!!! Does anyone >know what could be wrong - I want my megabyte back (it was there before)!!! What software are you using to initialize the partition, and what software did you use to initialize it before, when it worked? Is it *exactly* a megabyte that is missing (I want numbers)? An proper empty ProDOS directory and bitmap should take: 4 blocks for the directory, plus 1 bitmap block for every 2 megs (or fraction thereof) of space on the volume. Add two boot blocks (0 and 1), and you get 13 blocks (6.5K) of overhead on your 13 Meg volume. That's all. There should be 13 blocks used, not 2048 (1 Meg). --Dave Lyons, Apple Computer, Inc. | DAL Systems AppleLink--Apple Edition: DAVE.LYONS | P.O. Box 875 AppleLink--Personal Edition: Dave Lyons | Cupertino, CA 95015-0875 GEnie: D.LYONS2 or DAVE.LYONS CompuServe: 72177,3233 Internet/BITNET: dlyons@apple.com UUCP: ...!ames!apple!dlyons My opinions are my own, not Apple's.