China DOS Union

-- Unite DOS · Advance DOS · Grow DOS --
Union site: www.cn-dos.net　Forum site: www.cn-dos.net/forum

中国DOS联盟论坛
The time now is 2026-08-18 08:48

47,814 topics / 349,907 posts / today 0 new / 48,259 members

DOS疑难解答 & 问题讨论（解答室） » How to use findcd to find the correct CD drive letter???

Floor1　cyradg	Posted 2006-08-22 11:32
初级用户　Posts 17　Credits 78
It is that there is more than one CD-ROM (or DVD-ROM) installed on a machine. findcd seems to only be able to find the main CD-ROM. If the disc is placed in a secondary CD-ROM, it cannot be found. Then how can we find the correct drive letter where the disc is located? For example: if the disc is placed in drive E, the drive letter is E; if it is placed in drive F, the drive letter is F. Thanks.

Floor2　Wengier	Posted 2006-08-22 11:38
系统支持　Posts 10,521　Credits 27,736
Not adding parameters or using findcd 1 means the first optical drive; the second optical drive should use findcd 2, and so on.

Floor3　cyradg	Posted 2006-08-22 11:41
初级用户　Posts 17　Credits 78
Thanks to the person above. I have two optical drives. Of course, I usually put it in the first one now, but if I put it in the second optical drive, how to make it automatically and correctly find the drive letter of the optical drive where the disc is located.

Floor4　Wengier	Posted 2006-08-22 11:50
系统支持　Posts 10,521　Credits 27,736
Didn't I already say above that you should use findcd 2 to find the drive letter of the second CD-ROM? Have you tried it?

Floor5　cyradg	Posted 2006-08-22 14:45
初级用户　Posts 17　Credits 78
It seems that findcd uses %CDROM1%, %CDROM2%, ..., global variables to represent CD - ROM drive letters. My level is limited. The following autoexec.bat is effective for the first CD - ROM, but invalid for the second one. May I ask how to modify it again? Thank you. @ECHO Off PROMPT $p$g LH Shsucdx.exe /D:IDE-CD /K /M:15 >NUL LH FINDCD /s >nul IF "%CDROM%"=="" GOTO no_cdrom lh a:\SMARTDRV 4096 CLS path %CDROM1%\;a:\; %CDROM1% CD\TOOLS\DOSLFN LH DOSLFN.COM CD\TOOLS LH TW.exe/NP CD\TOOLS\VC rem if not exist VC.com goto NO_FILE VC.COM GOTO EXIT :no_cdrom echo error:no_cdrom a:\ GOTO EXIT :NO_FILE ECHO ERROR:NO FOUND DM.COM! pause GOTO EXIT :EXIT

Floor6　Wengier	Posted 2006-08-22 22:03
系统支持　Posts 10,521　Credits 27,736
findcd was compiled by me a few years ago. There are two expressions: one is in the form of findcd [n], where n is a number, indicating that the nth CD-ROM drive letter is displayed and stored in %CDROM%; the other is in the form of findcd /s, which directly stores all CD-ROM drive letters into variables. At first, findcd only supported the former, and later I added support for the latter at the request of a certain netizen.