中国DOS联盟

I want to make a bootable CD, placing both the operating system's ghost backup and the ghost software on the CD. Since the bootable CD has a dual identity, the drive letter displayed after booting is drive A, while the ghost backup is on the CD drive, and it's inconvenient to switch drive letters when using it.

I thought that if I compile an independent ghost.bat and put it into the boot files, generally this CD is still used as a boot disk, and when I need to restore the ghost backup, I execute this file. Can the DOS system automatically execute the ghost file in the CD drive?

Because the drive letter of the CD drive on each computer varies greatly due to the different number of partitions. Some people have drive D, while some have drive G or others, and some computers even have an additional burner. I would like to ask all experts: How can I make DOS automatically find the CD drive and locate the disk where the CD is? How should this batch processing be written? Thanks in advance.

Method 1 (Using FINDCD.EXE):

There is a small program FindCD.exe in Wengier's MSDOS 7.1 boot disk. With it, it's easy to confirm the CD - ROM drive letter! When you run it, it will automatically store the CD - ROM drive letter in the %CDROM% environment variable. Then the GHOST.BAT can be written in a few lines (assuming the GHOST program is stored in the \GHOST folder on your CD - ROM):

@echo off
findcd
%cdrom%
cd\ghost
ghost

Method 2 (Modifying AUTOEXEC.BAT):

The MSCDEX or SHSUCDX command to drive the CD - ROM can set the CD - ROM to a specific drive letter. For example:

MSCDEX /D:IDE-CD /L:Z
or
SHSUCDX /D:IDE-CD,Z

No matter how many partitions the hard disk has, or even if there is no hard disk, you can set the CD - ROM to Z:. Then the batch processing is simpler:

@echo off
z:
cd\ghost
ghost

Last edited by JonePeng on 2005-11-29 at 13:16 ]

Great! Thanks to Brother JonePeng for the guidance.

If the CD - ROM is set to Z: it will bring some troubles if there are several CD - ROMs. It is better to set the CD - ROM to a more appropriate letter.

You can use FoundCD to put the drive letter of the CD into a variable, and then use %CDROM% to directly jump to the CD. The FoundCD program can be found in Wengier's bootable disk.

Thanks to the instructor's teachings. But I'm a newbie, and I'm most afraid of variables. Can you explain it in detail? Of course, if you can write out the entire batch file like the brother above, then it's the best, and I can also learn while imitating. Thanks. Another: Thanks to brother mtx from 4th floor for the reminder.

The JonePeng on the second floor has already made it very clear. Just follow his example to apply it. I didn't read his post carefully when I posted yesterday. I'm ashamed.

Great minds, I'm learning from you!

It's not to that point yet!

When there are multiple CD - ROM drives, you can assign drive letters to the CD - ROM drives respectively, and there won't be any confusion.

Study hard, thank you everyone!