How to automatically switch to the CD-ROM drive letter after booting? - China DOS Union Forum

I'm a newbie and don't know much about DOS.
I want to make a boot disk to serve as the boot files for a CD,
so that after the machine boots it can automatically switch to the CD-ROM drive letter.
Question: how should the batch file be written?
What other files are needed on the disk?

Please take the time to answer, thanks!!

If you already know how to use a boot floppy to make a bootable CD, and just don't know how to automatically switch to the CD-ROM drive letter after booting,
then you only need to solve the problem of finding the CD-ROM drive letter.
There are two methods:
1. Specify the CD-ROM drive letter: add /L:X at the end of the line containing MSCDEX.EXE in AUTOEXEC.BAT on the boot floppy (X can be replaced with other letters)
This method is simple and easy to use; beginners are advised to use it.
2. Use FINDCD.EXE to find the CD-ROM drive letter. This method is a bit more complicated; you can refer to the Super Moderator's MSDOS7.10 Super Boot Disk.

After deciding which method to use, add one line at the end of AUTOEXEC.BAT on the boot floppy:
X: (first method)
or
%CDROM%: (second method)

Then after booting it will enter the CD-ROM drive letter (of course, the first CD-ROM drive letter).

If you still don't know how to use a boot floppy to make a bootable CD, then first look at the old posts from before, learn that, and then do the above.

Thanks, brother wglwx!
I already know how to use a boot floppy to make a bootable CD.
My goal is: to use this disc to boot any machine and have it automatically switch to the CD-ROM drive letter.
Question:
Can method 1 achieve this goal?

Yes.

Note:
1.There should be this line in CONFIG.SYS: LASTDRIVE=Z
2.You can test with a floppy first, and burn the CD after it succeeds.

Originally posted by xp2002_xp at 2003-7-6 12:00 AM:
Thanks, brother wglwx!
I already know how to use a boot floppy to make a bootable CD.
My goal is: to use this disc to boot any machine and have it automatically switch to the CD-ROM drive letter.
Question:
Can method 1 achieve ...

Buddy, did it work or not?

Share it with us

Floor1　xp2002_xp	Posted 2003-07-06 00:00
初级用户　Posts 17　Credits 157
I'm a newbie and don't know much about DOS. I want to make a boot disk to serve as the boot files for a CD, so that after the machine boots it can automatically switch to the CD-ROM drive letter. Question: how should the batch file be written? What other files are needed on the disk? Please take the time to answer, thanks!!

Floor2　wglwx	Posted 2003-07-06 00:00
高级用户　Posts 187　Credits 616
If you already know how to use a boot floppy to make a bootable CD, and just don't know how to automatically switch to the CD-ROM drive letter after booting, then you only need to solve the problem of finding the CD-ROM drive letter. There are two methods: 1. Specify the CD-ROM drive letter: add /L:X at the end of the line containing MSCDEX.EXE in AUTOEXEC.BAT on the boot floppy (X can be replaced with other letters) This method is simple and easy to use; beginners are advised to use it. 2. Use FINDCD.EXE to find the CD-ROM drive letter. This method is a bit more complicated; you can refer to the Super Moderator's MSDOS7.10 Super Boot Disk. After deciding which method to use, add one line at the end of AUTOEXEC.BAT on the boot floppy: X: (first method) or %CDROM%: (second method) Then after booting it will enter the CD-ROM drive letter (of course, the first CD-ROM drive letter). If you still don't know how to use a boot floppy to make a bootable CD, then first look at the old posts from before, learn that, and then do the above.

Floor3　xp2002_xp	Posted 2003-07-06 00:00
初级用户　Posts 17　Credits 157
Thanks, brother wglwx! I already know how to use a boot floppy to make a bootable CD. My goal is: to use this disc to boot any machine and have it automatically switch to the CD-ROM drive letter. Question: Can method 1 achieve this goal?

Floor4　wglwx	Posted 2003-07-06 00:00
高级用户　Posts 187　Credits 616
Yes. Note: 1.There should be this line in CONFIG.SYS: LASTDRIVE=Z 2.You can test with a floppy first, and burn the CD after it succeeds.

Floor6　shawell518	Posted 2006-10-22 00:41
中级用户　Posts 97　Credits 310
Originally posted by xp2002_xp at 2003-7-6 12:00 AM: Thanks, brother wglwx! I already know how to use a boot floppy to make a bootable CD. My goal is: to use this disc to boot any machine and have it automatically switch to the CD-ROM drive letter. Question: Can method 1 achieve ... Buddy, did it work or not? Share it with us

Floor5　xp2002_xp	Posted 2003-07-07 00:00
初级用户　Posts 17　Credits 157