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Way O.T. Computer prob

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Jeff Oliver

12-21-2004 20:14:16




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I tried posting this one several computer tech boards and got nothing so I figure they great folks here will at least answer:) I have a computer here that has lost the command.com file in C: drive. I tried making the boot disc on my computer and it wwill boot the computer to an A prompt but I can't do anything else. Been a long time since i have worked in Dos and my old brain is failing me. How do i get the Command.com file over to C; drive?

thanks!

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Hermit

12-22-2004 18:48:19




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 Re: Way O.T. Computer prob in reply to Jeff Oliver, 12-21-2004 20:14:16  
Creating a XP bootable disk is different than other Windows systems. After you format a floppy using just the full format option, copy the Boot.ini, Ntldr and Ntdetect.com files and if your computer also has the Bootsec.dos and Ntbootdd.sys, copy them. Then put the floppy into the bad computer and power on. This should get you to Windows XP. Then run System Restore to a time prior to the malfunction. An anti-virus scan is also in order since several viruses eat up the command.com file. Good luck.

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Richard Fazio

12-22-2004 16:21:02




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 Re: Way O.T. Computer prob in reply to Jeff Oliver, 12-21-2004 20:14:16  
The normal way to get command.com to the C drive is to type "sys c:" This copies two hidden files and command.com to make C: bootable. If the machine doesn't boot normally after that you've got bigger problems. Your A: drive must also be bootable and have sys on it.



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Allan in NE

12-22-2004 04:37:39




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 Re: Way O.T. Computer prob in reply to Jeff Oliver, 12-21-2004 20:14:16  
Hi Jeff,

You are going about this wrong; you don't want that command.com file from your A drive over on the C drive. It's the wrong file.

At the A: prompt, type in:

C:\dir

This should throw everything that is seen on drive C. If it does, then Windows needs to be reinstalled.

If it does not, it does not mean that the drive is dead; it only means that the computer cannot see drive C.

Hard drives just don't "die" that easily, but they do tend to become corrupted, loose a partition, come unplugged, or perhaps it could not read from the "0" sector. Could be a lot of things, but a competent repairman can usually save that drive.

But, the first thing to do is to see if your computer can actually see a "drive C".

Allan

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paul

12-21-2004 20:26:34




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 Re: Way O.T. Computer prob in reply to Jeff Oliver, 12-21-2004 20:14:16  
What version of DOS/ Windows are we dealing with?

Can you do c: RETURN and get a c: prompt - are you booted so you can access the hard drive at all? Can you get a directory of the C: drive (c: dir RETURN).

copy a:/command.com c:/

should do the copy, but only if you have the hard drive accessable.

--->Paul



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Bill Drew

12-21-2004 21:13:05




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 Re: Way O.T. Computer prob in reply to paul, 12-21-2004 20:26:34  
Try Paul's suggestion, but it is likely you have lost more than just command.com. Probe about on your hard drive to see if you can find your data files. If you can, buy another hard drive (cheap these days), install it, and copy the data file over. Then reinstall Windows. If that doesn't work, format your C: drive (your data is still on the new drive) and start installing all of your software again.

If you don't have it, get some antivirus software. Likely your ISP will have free or cheap software that is kept up-to-date easily.

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Jeff Oliver

12-22-2004 02:58:42




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 Re: Way O.T. Computer prob in reply to Bill Drew, 12-21-2004 21:13:05  
So far I can't access C: drive I have a boot disk I made on my computer but it comes up and says that C:\Windows\command.com is missing or corrupted.This is Windows XP on the system. T don't have to back up anything as I was told there was nothing on there that they really needed. (This is our secretaries home computer) Any other way to create a boot disk other than the format option on the 3 1/2 drive?

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paul

12-22-2004 10:54:15




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 Re: Way O.T. Computer prob in reply to Jeff Oliver, 12-22-2004 02:58:42  
I'm a bit confused - you can't create a boot disk from your sec computer if it doesn't have a comand.com file, so how is it you are creating the comand.com file????

You will need to create a boot disk for XP, supporting NTFS file systems, and so on.

Most of the time that is difficult to do on a small floppy, you need to use the CD that came from the vendor & use that to boot up the computer & get things working properly.

Or, can you start up the computer in safe mode, & restore it to a previous time when it was still working? That would be the best first option on an XP system.

--->Paul

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MarkB_MI

12-22-2004 03:38:29




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 Re: Way O.T. Computer prob in reply to Jeff Oliver, 12-22-2004 02:58:42  
Although it's possible that command.com was deleted, most likely the hard disk is bad. You may be able to fix the problem if you have a Windows XP install CD, but it will fail again. You'll probably need to replace the hard drive and rebuild Windows XP. If you can boot it now from a CD or floppy, you may be able to copy any important files off of it.

To attempt to repair the OS, get an XP install CD, boot the computer off the CD and pick the "repair" option when prompted. (This is how Windows 2000 works, I assume XP is the same.)

In answer to your question how to create a boot disk, in the old days you could do this with the "sys" command. Boot from another device, then type "sys c:" to transfer the system files to the hard drive. I have no idea if this still works in XP.

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