For example
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysmonLog\DefaultLogFileFolder
is set to
%SystemDrive%\PerfLogs
but where is that?
In contrast,
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\PathName
is set to
%systemroot%\system32
and I know where %systemroot% is, because
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\SystemRoot
is set to
C:\WINNT
That makes sense.
I know it's kind of stupid, but I can't find %systemdrive%.
Thanks everyone.
Steffen
> Silly question: Where is %SystemDrive%?
>
> For example
> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysmonLog\Defa
> ultLogFileFolder is set to
>
> %SystemDrive%\PerfLogs
>
> but where is that?
>
>
> In contrast,
> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\PathName
> is set to
>
> %systemroot%\system32
>
> and I know where %systemroot% is, because
> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
> NT\CurrentVersion\SystemRoot
> is set to
>
> C:\WINNT
>
> That makes sense.
>
> I know it's kind of stupid, but I can't find %systemdrive%.
Open a cmd.exe prompt.
Enter SET
The %systemdrive% should have a value of the "boot" drive. Often
this is "C:". The drive that contains %systemroot% (the Windows
Installation location).
%systemdrive% is where the primary boot volume and OS are. So if you
install it to the default it will be C:\
Cheers
Peter Z.
Steffen Haugk <stef...@cushat.com> wrote in message news:<i7hcpvc1dg1m1scha...@4ax.com>...
>Steffen Haugk wrote in
>news:i7hcpvc1dg1m1scha...@4ax.com:
>
>>
>> I know it's kind of stupid, but I can't find %systemdrive%.
>
>Open a cmd.exe prompt.
>Enter SET
>
>The %systemdrive% should have a value of the "boot" drive. Often
>this is "C:". The drive that contains %systemroot% (the Windows
>Installation location).
I can not (or better, want not) run SET on a remote machine from my
program. I can happily connect to a remote computer's registry and get
%systemroot%.
I assume that %systemdrive% is the drive letter part of %systemroot%.
Although that makes sense, I wonder if that is the official way to do
it, and if that is the official way in which %systemdrive% is to be
interpreted.
Thanks for the reply.
Steffen
>There are no silly questions. Only silly people who refuse to ask when
>they don't know.
>
>%systemdrive% is where the primary boot volume and OS are. So if you
>install it to the default it will be C:\
It seems funny to use a variable %systemdrive% in the registry and not
defining it anywhere.
Thanks,
Steffen
There are several variables that are created by the system at boot
time and are assigned dynamically. These are not defined (hard-
coded) anywhere. They are "defined" and visible in the local
machine's environment space. %systemdrive% is available if you can
read the local environment (on a remote system). psinfo.exe is an
example. psexec.exe is another way to see a "local" environment.
If you must read the remote registry to determine the "systemdrive" I
suggest
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
SystemRoot=
(a REG_SZ) value. Then parse out the drive letter.
But why introducing it at all, when it is so obvious?
Why is systemroot not defined as &systemdrive%\winnt?
The weird world of Windows.
Thanks again,
Steffen
On Tue, 04 Nov 2003 06:24:47 -0800, Mark V <notv...@invalid.nul>
wrote:
> Thanks all,
> I am satisfied I haven't missed anything. If systemroot is
> c:\winnt it is kind of logical that systemdrive is c:, isn't it?
>
> But why introducing it at all, when it is so obvious?
> Why is systemroot not defined as &systemdrive%\winnt?
A good question to which I have not the answer. :-)
It may be (hypothetical) that this derives from design decisions made
in the original NT developement.