China DOS Union

Batch scripts that can run under DOS and correctly find the last drive letter.
Actually, I'm trying to make a Ghost automatic backup and put it on the last drive letter.
But I don't know how to specify it as the last drive letter.
It needs to work on NTFS - formatted hard drives...
Troubled seniors, please tell me, little brother is very grateful...
Also... DOS supports NTFS.

In this case, you shouldn't focus on the drive letters, but rather on the number of disks and partitions.

The key is, I want to use it on different computers. If one computer has 3 partitions and another has 4 partitions, what should I do?

So that's why you need to find a way to get the number of disks and partitions. In DOS, for example, NTFS won't have a drive letter. And the problem with the number of disks is even bigger because Ghost uses its own logic for disk sequences. It defaults to the boot hard drive as the first disk, and only when booted from other devices will it judge according to the master-slave interface of IDE. You must get the number of disks and partitions if you want to use such a command. GHOST -clone,mode=pdump,src=%sd%:%sp%,dst=%dd%:%dp%\sys.gho -sure -z9 -rb

Can't we directly determine the last drive letter to back it up?

I don't know if ghost has such a parameter

Just now I've seen many methods and tried them. Except for the moderator's findcd (can't download), is there anyone who can help compile... Please everyone... As long as it can judge the last drive letter...

@echo off
REM Determine the drive letter of the last FAT partition on the hard disk
set na=
set dif=
func -a6 >>dtemp.txt
STRINGS na=LINESIZE dtemp.txt
STRINGS dif=READ dtemp.txt,%na%
echo %dif%

If you use Ghost, it has a built-in tool called GDISK.EXE. gdisk 1 displays the partition information of the first hard disk, and you can use this to retrieve.

Using the forum search, you can find many such posts. Take a look more to expand your ideas. Many are already closed posts.

Originally posted by zahy006 at 2006-12-29 11:05:
Can't we directly determine the last drive letter to back it up?

The second floor has already said that Ghost only recognizes partition numbers, not drive letters, unless all are FAT formats (obviously, this is impossible).
I refer to others' batch scripts, and the solution is,
1. Run Ghost -dd in DOS to get the last partition number of the first hard drive (I am only looking for the first hard drive),
2. Then run the Ghost command.