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DOS疑难解答 & 问题讨论（解答室） » Thanks to all the DOS experts for setting up this forum, I have a question to ask

Floor1　闪猛	Posted 2002-12-05 00:00
中级用户　Posts 69　Credits 327
With Windows running rampant today, it's not easy to have a forum about DOS. I sincerely thank all the moderators and super moderators for your efforts; they have helped a newbie like me improve a lot. Recently I've been making a bootable CD that integrates many DOS tools, and I've run into trouble determining the CD-ROM drive letter. To be specific, I mean like a Windows installation CD: no matter what your CD-ROM drive letter is, it can automatically load the CD-ROM driver and install the system. I don't know how that is implemented. Right now I only know how to use the following command in AUTOEXEC.BAT to set the CD-ROM drive letter to X: LH MSCDEX /D:MSCD000 /L:X Its drawback is that if there are two or more CD-ROM drives (I happen to have one CD-ROM and one CD-RW), the boot CD can only be used in the primary CD-ROM drive; if run from the secondary drive it says it can't find files. Please advise, thanks

Floor2　MYS	Posted 2002-12-06 00:00
元老会员　Posts 1,637　Credits 5,170　From 广东佛山
You can add two sections to the batch file: The first section sets the second CD-ROM drive letter according to the first CD-ROM drive letter. The second section uses if exist to determine which CD contains a certain specific file, and then performs the corresponding operation.

Floor3　闪猛	Posted 2002-12-06 00:00
中级用户　Posts 69　Credits 327
I don't understand what you mean, it's too deep for me. For a newbie like me, I saw the following command on another forum, and I only half understand it: LH %ramd%:\MSCDEX.EXE /D:mscd002 /L:%CDROM% %CDROM% It would be best if you could explain how the first "Install Windows98" option on the Windows98 installation CD is implemented when booted under DOS, then I could try following that.

Floor4　MYS	Posted 2002-12-06 00:00
元老会员　Posts 1,637　Credits 5,170　From 广东佛山
This is a bit troublesome to explain clearly. FreeDOS has a FINDCDROM program; maybe it can come in handy.

Floor5　langhua	Posted 2002-12-07 00:00
银牌会员　Posts 461　Credits 1,225
I think it's called FINDCD!!! Add another batch file, and it can be done. Is this what the poster above meant???

Floor6　闪猛	Posted 2002-12-07 00:00
中级用户　Posts 69　Credits 327
But I don't know how to use the FINDCD command?

Floor7　ko20010214	Posted 2003-07-04 00:00
版主　Posts 1,628　Credits 7,296
Learn how to ask questions first. Change your post title to something better. For posts with titles like this, in the future there may be only these three possible outcomes: 1。No one pays any attention. (This is the best case.) 2。It gets moved to the off-topic section. 3。It gets deleted.