Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!mintaka!snorkelwacker.mit.edu!usc!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!bronze!silver!ntaib From: ntaib@silver.ucs.indiana.edu (Nur Iskandar Taib) Newsgroups: comp.sys.ibm.pc.misc Subject: Re: DS/DD --> DS/HD 3.5" Disk Notchers Message-ID: <1991Mar15.213216.8471@bronze.ucs.indiana.edu> Date: 15 Mar 91 21:32:16 GMT References: <1991Mar11.182336.3274@vax5.cit.cornell.edu> <19536@brahms.udel.edu> Sender: news@bronze.ucs.indiana.edu (USENET News System) Distribution: comp Organization: Indiana University, Bloomington Lines: 34 >IMHO you're taking a chance. The media on a HD diskette is much >much more dense than that on a 720K diskette. It is my understanding >that at the factory(s) the diskettes are tested for density and those >that pass are marked HD and those that don't are marked DD. I >wouldn't trust MY data to such a diskette. One of the faculty members >that I support, who used DD density diskettes formatted HD for backing >up data, had data on one of the diskettes just sorta fade away, he has >since invested in HD diskettes and transferred his surviving data. I remember an ad for one of these a while ago claiming that the person who invented the disk driller examined the media on DSDD and DSHD diskettes and couldn't find any difference. Sounds fishy to me... I did use to use SSDD diskettes as DSDD, and had few problems, but thats another set of problems altogether (DOS Format will mark bad spots, but it can't do much about fading data!). One use for "pushed" diskettes would be for storing all those GIF files and shareware you download and never use, but _think_ you may use one day.... -- ------------------------------------------------------------------------------- Iskandar Taib | The only thing worse than Peach ala Internet: NTAIB@AQUA.UCS.INDIANA.EDU | Frog is Frog ala Peach Bitnet: NTAIB@IUBACS ! -------------------------------------------------------------------------------