Path: utzoo!attcan!uunet!ginosko!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!rutgers!mcnc!ecsvax!mvolo From: mvolo@ecsvax.UUCP (Michael R. Volow) Newsgroups: comp.sys.ibm.pc Subject: Re: 1.2meg/360k compatibility question Summary: more tests Message-ID: <7363@ecsvax.UUCP> Date: 22 Jul 89 14:37:06 GMT References: <2250@astroatc.UUCP> <7362@ecsvax.UUCP> Organization: UNC Educational Computing Service Lines: 21 Regarding further testing of the 360K compatibility of the NEC 1.2M floppy drive: Took a 360K diskette that had been formatted in a 360K drive and had 180K data. Reformatted it in a NEC 1.2M drive again to 360K. Wrote an small text file to it in the 1.2M drive. Not only the 1.2M drive, but also the 360K drive, was able to read the text file. If the 1.2M drive only formats, reads, and writes skinny tracks, then the 360K drive should have trouble reading them, if residual data existed on either side of the 1.2M-formatted skinny tracks. Diskette had not been bulk- erased. Have not peeked inside of the 1.2M to see if there is a head wired to write in 2 effective widths. Oh yes, I did have difficulty in getting PC DOS 3.1 to format the 360K in the 1.2M drive using th3e FORMAT/4 option (wrong media message), but I used a format routine from a file manager I use (WindowDOS). Any other tests you'd like to see? M Volow, VA Medical Center, Durham, NC 27705 mvolo@ecsvax.UUCP 919 286 0411