Xref: utzoo comp.os.msdos.programmer:4370 comp.unix.sysv386:6510 Newsgroups: comp.os.msdos.programmer,comp.unix.sysv386 Path: utzoo!utgpu!watserv1!watdragon!lion!azakinthinos From: azakinthinos@lion.uwaterloo.ca (Aris Zakinthinos) Subject: Re: Dos and unix on same Disk Message-ID: <1991Apr1.004301.27724@watdragon.waterloo.edu> Sender: daemon@watdragon.waterloo.edu (Owner of Many System Processes) Organization: University of Waterloo References: <1991Mar30.224536.603@panix.uucp> Distribution: na Date: Mon, 1 Apr 1991 00:43:01 GMT Lines: 25 A friend and I spent a couple of hours one day tring to get SCO unix to accept DOS partitions of > 32k on another friends machine. Well we finally did it. The problem is as follows: If the DOS partition is > 32k the DOS type (this is what we called it it may be really b e called something else) is 6. In the boot up code SCO only checks for DOS types of 4 and 2? (I don't remeber if it is really 2 but it is another number). With the advent of partions of greater 32k Microsoft introducted DOS type 6. The way we got SCO to recognize the >32k partion is to change the comparison of 2 to 6. We don't know if there are any adverse affects to this change but everything seems to be working fine. I don't exactly remember where the boot up code was found (we traced through the boot up process with a debugger) so I can't tell you how to change it but when I go home I will see if I can find the info. The other way we though might work is to simply change the 6 to a 4 in the Master boot track. We didn't go for this option as we don't know what affect this wil have on DOS (if any). Hope this gives some insight. Aris.