topic Re: Simple XCOPY Question - Backup Files in Operating System - Microsoft

Simple XCOPY Question - Backup Files

Jay Bollyn — Fri, 18 Aug 2006 10:09:51 GMT

I would like to use XCOPY to backup a folder and all sub folders to another drive. C:\data is the source. H:\data is the destination, which already exists. Here are the requirements:

1. I only want to copy files and folders which are either new since the last backup, or modified. So I use the /A switch;

2. Overwrite existing files with a newer version without prompting, so I use /Y.

The user claims some files which have changed or been created since the last backup do not appear on the destination.

Is my syntax correct?

XCOPY C:\data\*.* H:\data\*.* /A /E /K /Y /Q

This user does not need a full backup program. I think XCOPY is perfect for what he needs.

- Jay

Re: Simple XCOPY Question - Backup Files

Ivan Ferreira — Fri, 18 Aug 2006 11:20:06 GMT

I think that instead of /A you have to use /M. The /M unmark the archive attribute, so next time won't be copied. If the file is changed, then the file will be copied.

The syntax should be:

xcopy /M /E /K /Y /Q c:\data\*.* h:\data\

Re: Simple XCOPY Question - Backup Files

Jay Bollyn — Fri, 18 Aug 2006 12:28:12 GMT

Thanks Ivan,

I think what I need is:

XCOPY C:\data\*.* H:\data /M /E /K /Y /Q

According to 'XCOPY /?', it should be:

XCOPY source destination switches

...which is different from most other commands.

You are right, I should be using /M, not /A.

I'm not sure what the *.* in the destination was doing, but I don't think it should be there, based on the examples I have seen.

I will give this a try next week.

- Jay

Re: Simple XCOPY Question - Backup Files

Jon Finley — Fri, 18 Aug 2006 19:20:14 GMT

Jay,

My understanding, is that either you specify *.* in both cases, or you add in the /I switch.

Are you going to need to also copy the ACL and ownership info? If so, everything looks good, but add in the /O switch.

XCOPY C:\data\*.* H:\data /M /E /I /K /Y /Q /O

And, if these are critical files you might want to think about verifying the copy by using /V.

XCOPY C:\data\*.* H:\data /M /E /I /K /Y /Q /O /V

Jon

Re: Simple XCOPY Question - Backup Files

Jay Bollyn — Fri, 18 Aug 2006 22:31:46 GMT

Hi Jon,

I think you are right about *.*. I believe I understand that syntax now.

I think this will do what I need:

XCOPY C:\data\*.* H:\data\*.* /M /E /K /Y /Q

Perhaps the user was not pressing F5 to refresh the destination file list.

- Jay

Re: Simple XCOPY Question - Backup Files

Jay Bollyn — Sun, 20 Aug 2006 13:33:16 GMT

I think this is probably resolved. If not, I will reopen.

Re: Simple XCOPY Question - Backup Files

Jay Bollyn — Sun, 20 Aug 2006 13:33:41 GMT