ML> I need to determine the current OS/2 boot drive (partition) from
 ML> within a REXX program.  The only foolproof solution I have found is an
 ML> external function that calls DosQuerySysInfo(5,5,&Buf,sizeof(Buff)),
 ML> where Buff is declared ULONG and will contain the partition number
 ML> after the call.  I have a feeling that merely looking for a volume
 ML> labeled "OS2" isn't good enough, what with all the boot-manager
 ML> aficionados that keep multiple versions of OS/2 on line.  I run a
 ML> single-OS system (Warp Red w/o Windows), so I really don't understand
 ML> what can and cannot be done with boot manager.  But, I dislike writing
 ML> utilities (even for my own use) that are limited by my own system

How about looking in the root directory of each drive for config.sys and
offer the user a menu to choose from.  This is how qvdm102 does it.

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