Vista - Xcopy /D copies all files, not just newer

I am trying to use a batchfile to backup from a PC to a NAS. I am
using the /D switch, and the files are mostly months newer on the NAS,
but it still wants to copy them all. Anyone know why or how to
workaround this?

Hi, Mike.

In the Command Prompt window, type: xcopy /?

If you already did this, then what is the exact form of your command line?
Did you insert a date, such as:
xcopy /d:07-31-08

I don't use the /d switch much; does it require a 4-digit year? Are you
perhaps using the d-m-y format, rather than m-d-y? Or / instead of - for
the separators?

I'm about out of guesses. Could you supply more details? Some examples,
perhaps?

RC
--
R. C. White, CPA
San Marcos, TX
rc@xxxxxx
Microsoft Windows MVP
Windows Live Mail 2009 (14.0.8064.0206) in Win7 Ultimate x64 RC 7100

"Mike C" <michaeljc70@xxxxxx> wrote in message
news:1662249e-4fe3-419c-bdde-f674ae97b54e@xxxxxx

The /d switch, without specifying a date, is supposed to overlay only older
files.
BTW - that format doesn't use a colon.

example extracted and simplified from my own backup command file, which
backs up my Data drive (M) to a USB drive:

XCOPY M:\* U:\Backups /d/e/c/i/r/k/o/y

***

"R. C. White" <rc@xxxxxx> wrote in message
news:eCfWE9iDKHA.3732@xxxxxx

"Mike C" <michaeljc70@xxxxxx> wrote in message
news:b5d24d7e-86ab-40b5-a2a2-9ce319a96d97@xxxxxx
On Jul 28, 1:40 pm, "Eric" <some...@xxxxxx> wrote:-
-I am a programmer, but have no idea why you would want to reinvent the
-wheel.
-
-XXCOPY I have used before, but like to use built-in commands/utilities
-if possible so that my batchfiles are portable without installing a
-lot of extra software.

OP already said they were writing a batch file, so I recommend vbscript.
What wheel is that reinventing? Does XXCOPY make batch files?
vbscript is native to Windows, no extra software to install.
Why use built in commands if the issue here is a built in command was
deprecated and needs a replacement?

On Jul 31, 7:35*am, "Eric" <some...@xxxxxx> wrote:Well, Xcopy and Robocopy have around 50 switches. That can be written
in vb script easily?

When I said using in a batchfile, it is just a simple batch file with
3 robocopy commands.

"Mike C" <michaeljc70@xxxxxx> wrote in message
news:da3c0e7a-2812-4b10-87b4-bb2f73c39ea7@xxxxxx
On Jul 31, 7:35 am, "Eric" <some...@xxxxxx> wrote:-
-Well, Xcopy and Robocopy have around 50 switches. That can be written
-in vb script easily?
-
-When I said using in a batchfile, it is just a simple batch file with
-3 robocopy commands.

Why are your posts broken (when I reply it doesn't add the > in front)?

I don't know how easy it is to program for 50 switches. That depends on
your programming expertise and which switches you use. I don't normally use
any switches for robocopy.

If it's a simple batch file with 3 commands, your simplest option should be
replacing your xxcopy statements with robocopy statements, assuming the
machine it's going to run on will have the robocopy and you're not worried
about another utility becoming deprecated. I use robocopy on XP pro and it
didn't come with it. Your original post said batch file, didn't say simple
3 statement batch file. Converting a more complicated batch file to a
program could save some headaches later.

On Jul 31, 2:40*pm, "Eric" <some...@xxxxxx> wrote:I appreciate all the responses. I am guessing though that there is
some simple reason why robocopy isn't working. I assume that a utility
that Microsoft has included for 10 years works and there is just some
caveat why it isn't working in my case (maybe because of NAS?).

"Mike C" <michaeljc70@xxxxxx> wrote in message
news:9a87a1bb-7b3a-4f96-9ba9-101226a4c27d@xxxxxx

- I appreciate all the responses. I am guessing though that there is
- some simple reason why robocopy isn't working. I assume that a utility
- that Microsoft has included for 10 years works and there is just some
- caveat why it isn't working in my case (maybe because of NAS?).

Is robocopy copying files?
Did I read this right that your issue is robocopy not copying files which
haven't changed?
Did you check the switches? Did you try /IS?