Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cunixf.cc.columbia.edu!sol.ctr.columbia.edu!spool.mu.edu!think.com!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!unixhub!slacvm!toge From: TOGE@SLACVM.SLAC.STANFORD.EDU (Nobukazu Toge) Newsgroups: comp.sys.mac.system Subject: Re: Running System 6 & 7 together... Message-ID: <91121.152240TOGE@SLACVM.SLAC.STANFORD.EDU> Date: 1 May 91 23:22:39 GMT References: <21020@brahms.udel.edu> Distribution: usa Organization: Stanford Linear Accelerator Center Lines: 19 When having Sys 6 and 7 system folders on a same HD and Blesser is used to switch between them - Blesser looks for a file with filetype "ZSYS". In system 7 the system file has filetype "zsys" (lower-case). However, Blesser's open-file dialog has this ascii string "ZSYS" hard-coded. This is the origin of the problem. If you ResEdit the CODE resource 1 of Blesser, you'll find an ASCII string "ZSYS" somewhere around byte 0x560. What you can do is to create two copies of Blesser applications, and ResEdit one of them to have "zsys" instead "ZSYS" in the code resource there. You can use one for sys 6 -> 7, and the other for 7 -> 6 switching. I don't know if Apple approves of this, but I tried it anyway, and it worked just fine. Nobu Toge (Stanford Linear Accelerator Center) #include