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发表于 2006-7-12 22:39:25
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是引导文件，我删过，NTLDR is missing, press any key to restart
How can I start my computer without NTLDR?
In Windows XP Home/Professional and Windows 2000, you may one day turn on your computer and be greeted by this not so friendly message (NTLDR is missing, press any key to restart) after your BIOS loads.
First, get a blank floppy
Second, find a Windows NT4, 2000, or XP machine and format the floppy. Do not select "Quick Format" or "Create MS-DOS boot disk" (Windows 95/98/Me won't format the floppy correctly. Of course: What if I can't find a NT computer?)
Third, download and expand the file fixntldr.zip onto a floppy. (What's in fixntldr.zip?)
Once your computer gets past the bios screen you should see a black screen with white letters that says:
Try this first
Try this second
Try this third
Try this fourth
Try this fifth
Try this sixth
Try this seventh
Try this eighth
ninth
tenth
This file is set up to automatically select the "Try this first" choice after 30 seconds. Try it first, but if it gives you an error and doesn't continue booting into Windows XP, try the other options. ("Try this first" aims for a WinXP installation to the first drive on the first partition, if yours is different, you will have to select another option. "ninth" aims for a Win98 installation on drive C, and "tenth" aims for a Win98 installation on drive D)
Note: This file assumes that your Windows XP directory is named "WINXP". This may not be the case, it can sometimes be called "Windows" or "Winnt". If that is the case open the "boot.ini" file on the floppy disk and change any reference from "WINXP" to "Windows" or "Winnt". (Or you can rename the boot.ini file to winxp.ini and rename either windows.ini or winnt.ini to boot.ini)
What is this disk doing? This disk is designed to have you try and get back into your windows installation after something happens to either your NTLDR or boot.ini file that causes it to either point to the wrong partition/disk or something changes your boot up (ie: partition not made active). The majority of the time this will fix issues where you "did nothing" and then got the message. If your doing an installation of a second operating system or changing hardware, you may be better off with a reinstallation of a new operating system.
Once you get back into windows, go to the root of your C:\ drive and rename boot.ini to boot.ini.bak, ntldr to ntldr.bak, and ntdetect.com to ntdetect.com.bak, then copy the files that are on your floppy disk to the root of your C:\ drive. If it prompts you to overwrite a file, press "Yes". After they have been copied over, be sure to remove the "Read-Only" attribute from the properties of the files. (Right click on a file, choose properties, and uncheck the Read-Only box).
You may also try this if you have your installation CD: (the full version of the Windows XP CD, the upgrade version is non-bootable). Start your computer with your XP (or 2000) CD (in your BIOS "Boot Sequence" the CD-Rom will need to be accessed before the hard drive, and a dialog will appear that says "Press any key to boot from CD..." and you need to press a key on the keyboard to have it begin booting from the CD), then choose to repair a windows installation from the recovery console. Once you are logged in to your Windows installation, change to the CD drive, and enter the subdirectory \i386. Once you are there, type in copy ntldr c: to copy over ntldr to your hard drive. After this is complete, type in exit to exit the recovery console and restart your computer. Try starting your computer normally now. It should boot up. If that doesn't work, try going back into the recovery console and type: fixboot
Another suggestion found online is to boot with a Win9x floppy and type sys c: at the command line. Or while there type fdisk and make sure that the correct partition and hard drive are labeled "active".
And yet another possible fix:
Boot to the recovery console and select the number that represent your C: drive more than likely it will be 1. It will ask for your admin password...just enter if you have one or just hit enter if you don't. Once your at the C: type this
fixmbr C:
fixboot C:
Copy cddrive letter:\i386\ntldr C:\
(It will ask you if you want to overwrite the file...."Y" for Yes)
Copy cddrive letter:\i386\ntdetect.com C:\
Bootcfg /rebuild
It's going to ask you if you want add to the installation....Just type "N" for NO.
Reboot
What if I can't find a NT computer?
Try this: Download the file fixntldr_RawRite.exe to your desktop and double click on it to have it open it's contents. (If you prefer not to download a self-extracting file, use the zip file: fixntldr_RawRite.zip and expand it however you choose).
Open the file named rawwritewin.exe
Then tell it to use the file fixntldr.img that is in the same directory that rawwritewin.exe is in.
Press the "..." button:
Then select the "fixntldr.img" file, in the directory "fixntldr_RawRite":
Press Write:
Once it gets done writing the img file to the floppy, we should be able to take your floppy to the broken computer and switch it on. (Most computers are set up to boot from the floppy before booting to the hard drive, if yours is not you can tell it to by changing the "Boot Sequence" in the BIOS)
What is all this doing? Well the "rawwrite" software is used to format the disk in such a way that it can be used to help boot the OS. Then it moves 5 files to the floppy drive (These files are also contained in this zip file: fixntldr.zip)
What's in fixntldr.zip?
Two program files copied from a Windows XP installation named "ntldr" and "ntdetect.com" these assist in booting your existing installation.
And a text file named "boot.ini" that is what you use to make the selection of which partition and disk you are trying to boot from. The contents of boot.ini are as follows:
[Boot Loader]
timeout=30
Default=multi(0)disk(0)rdisk(0)partition(1)\WINXP
[Operating Systems]
multi(0)disk(0)rdisk(0)partition(1)\WINXP="Try this first" /fastdetect
multi(0)disk(0)rdisk(1)partition(1)\WINXP="Try this second" /fastdetect
multi(0)disk(0)rdisk(0)partition(2)\WINXP="Try this third" /fastdetect
multi(0)disk(0)rdisk(1)partition(2)\WINXP="Try this fourth" /fastdetect
multi(0)disk(0)rdisk(0)partition(3)\WINXP="Try this fifth" /fastdetect
multi(0)disk(0)rdisk(1)partition(3)\WINXP="Try this sixth" /fastdetect
multi(0)disk(0)rdisk(0)partition(4)\WINXP="Try this seventh" /fastdetect
multi(0)disk(0)rdisk(1)partition(4)\WINXP="Try this eighth" /fastdetect
C:\="ninth"
D:\="tenth"
windows.ini has "Windows" instead of WINXP, and Winnt.ini has "Winnt".
Microsoft talking about this topic:
http://support.microsoft.com/default.aspx?scid=kb;;Q314057
http://support.microsoft.com/default.aspx?scid=kb;en-us;318728
http://support.microsoft.com/default.aspx?scid=kb;EN-US;301680
http://support.microsoft.com/default.aspx?scid=kb;EN-US;119467
http://support.microsoft.com/?kbid=315261
http://support.microsoft.com/def ... B;en-us;311073&
http://support.microsoft.com/def ... kb%3Ben-us%3B812492
Replacing the Boot Sector
Using Recovery Console to recover from startup problems
How to create a bootable disk for an NTFS or FAT partition
Other people talking about stuff like this:
http://www.jsiinc.com/SUBE/tip2300/rh2319.htm
All done? I hope that helped, if you find anything wrong I'd like to hear about it or just: Tell me what you think. (You must include your email address if you want me to reply)
See more of Tiny Empire's ShortNotes to fix your problems.
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