From: "Ilya P. Ryzhenkov" Organization: ISPh SB RAS To: djgpp AT delorie DOT com Date: Thu, 24 Oct 1996 09:46:16 GMT+0600 Subject: Re: Drive Help Message-ID: RI> Date sent: Wed, 23 Oct 1996 10:09:22 +0200 (IST) RI> From: Eli Zaretskii RI> To that I replied, that if there is C:, then DOS always thinks RI> that A: and B: are there, because it allocates the block devices in a RI> linear consecutive array of structures. So if there is C:, you don't need RI> to do anything to check if A: and B: are known to DOS; they always are. RI> Your case just confirms what I thought. IMHO that's not always as you've written. Consider using SUBST and network drive mapping. If I boot from a floppy (on a diskless station) and connect to a network file server (like Novell) and issue MAP ROOT C:=SERVER\SYS:\SOMEDIR then I'll not have B:, however A: & C: will be present. There is also other soft which creates it's own drives regardles of what is actually present on a machine and in DOS mind ;-) (Examples : mscdex, norton utilities diskreet, ramdisk...) ====================================================================== Institute of Semiconductors Physics Ilya P. Ryzhenkov Russian Academy of Sciencies e-mail: ilya AT spy DOT isp DOT nsc DOT ru Siberian Branch http://spy.isp.nsc.ru