China DOS Union

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With the power of Grldr and VFloppy, we can add wonderful support for the DOS environment on the nt system; and with the magic of AvldrNG, we can reverse this process: we can make the DOS environment jump to the boot environment of the NT system. ;-)


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Do you still remember the 3-in-1 attempt of Avldr for Grub? Yes, this AvldrNG is also improved and perfected on the basis of the trial version of Avldr for Grub. Due to the launch of WinVI, I think this tool should be useful. For example:


◎ We don't have a boot environment with ntldr, but we need to load a WinPE from the hard disk. For example, this WinPE:

http://sysoft.zdwx.com/forum/viewthread.php?tid=169&fpage=1, then we only need to place files such as setupldr.bin, bootdetect.com, winnt.sif, etc. in C:\, and then run in pure dos

c:\>Avldrng /loader=setupldr.bin to load this PE.


◎ With a boot environment with ntldr installed, we can run Avldrng.exe under Windows, drag c:\setupldr.bin to the file selection dialog of Avldrng.exe, then select "Install", and then open C:\boot.ini and paste it, and a new boot entry can be added. Restart the computer, select the new entry, and you can load this WinPE. Of course, if you know Windows Vista, then it has a new PE technology called the Wim method. For this WimPE, you can refer to

http://sysoft.zdwx.com/forum/viewthread.php?tid=158&fpage=1

After obtaining bootmgr, we can use AvldrNG to load this WimPE. WinPE is not far away!


◎ Can I use AvldrNG to load NTLDR/PELDR/Bootmgr/Grldr from a floppy disk? Yes. But be sure to remember that the order in which AvldrNG scans the specified bootloader files is hd1 -> hd2 -> fd1 -> fd2. It should be noted that if the first hard disk does not exist, it will look for hd2; if the specified loader file is not found on the previous hard disk partition, it will try the A drive. If the A drive reset fails, it will try the B drive. Of course, if there is none, it will push you to a boot menu. ... ... ;-)


For the latest version, please query from http://sysoft.zdwx.com/forum/viewthread.php?tid=167&pid=1104&page=1.

[ Last edited by Gandalf on 2005-9-9 at 23:12 ]

Can this method allow entering WinXP from DOS? Please have the moderator analyze its feasibility.

This is completely possible. There are two methods:

1. Put ntldr, ntdetect.com, boot.ini, bootfont.bin (optional) onto your DOS boot floppy disk; of course, here we rename ntldr to ntldr2, then boot the system with this disk, and run at the command line:

a:\>avldrng /loader=ntldr2 to load that ntldr on your floppy disk. And if your boot.ini is properly configured, then you can boot the WinXP system on your hard disk. ;）

2. Suppose that your C:\ already has those NT boot files, then no matter what the partition format of C: is, we can boot the system with a DOS boot disk, and then run Avldrng.exe to transfer the system to the boot of the system on C:\. ;）

Cool or not?!

Thanks for sharing good stuff,

Originally posted by Gandalf at 2005-9-10 11:59 AM:
This is completely possible. There are two ways:

1. Put ntldr, ntdetect.com, boot.ini, bootfont.bin (optional) onto your DOS boot floppy; of course, here we rename ntldr to ntldr2, and then..

What I mean is: Before installing WinXP, I formatted the C: drive to be the system drive using Format c:/s, and then installed WinXP. Then when starting WinXP, pressing F8 can enter DOS. In such a DOS, can I enter WinXP without restarting?

Of course that's not possible. If it were feasible, Grub4Win would have been made long ago. Hehe. ;）

Can Avldrng be used for VISTA installation?

LZ, the solution you mentioned seems to be able to solve a problem I raised before:
http://www.cn-dos.net/forum/viewthread.php?tid=29312&fpage=1&highlight=

I could boot the system with command.exe\io.sys\config.sys under fat32 before. Now I want to use Dos in ntfs partition. How can I boot the system with the most streamlined several files (I don't like to install cumbersome tools like矮人, although they are excellent), and can realize the read-write function of ntfs partition. Hehe, it's a problem of the century. Everyone, help out.

Is that right? Can you go to help me solve it? Thank you.

Good stuff

Originally posted by chujiafu at 2005-9-11 07:15:

What I mean is: Before installing WinXP, I formatted the C: drive as the system drive using Format c:/s, and then installed WinXP. Then when WinXP starts, press F8, and you can enter DOS. In such a DOS, can you enter WinXP without restarting?

Actually, it is feasible, but the prerequisite is that the C drive must be in Fat 32 format

Haha, amazing... In this way, even if you install Win98 later - if someone still installs Win98 & xP - there's no need to worry.

Now the grub4dos can also load NTLDR and setup.bin from DOS.