The problem is resolved:
At installation-time I dont see the option-field for the installation place. Now Opera is saved on D:\ . The Path for 'profile' and 'Cache' file are assigned with the the MKLINK-Command:
mklink /J "C:\Users\Peter\AppData*Roaming*\Opera Software*Opera Stable*" "D:\OperaProfil*Opera Stable*"
mklink /J "C:\Users\Peter\AppData*Local*\Opera Software*Opera Stable*" "D:\OperaCache*Opera Stable*"

And Opera is the default browser.

Thanks to all for your teamwork.

MT Otti22
Bye Bye

Thanks for all.
I think, I must use the portable version.

MG
Otti22

The problem is resolved:
At installation-time I dont see the option-field for the installation place. Now Opera is saved on D:\ . The Path for 'profile' and 'Cache' file are assigned with the the MKLINK-Command:
mklink /J "C:\Users\Peter\AppData*Roaming*\Opera Software*Opera Stable*" "D:\OperaProfil*Opera Stable*"
mklink /J "C:\Users\Peter\AppData*Local*\Opera Software*Opera Stable*" "D:\OperaCache*Opera Stable*"

And Opera is the default browser.

Thanks to all for your teamwork.

MT Otti22
Bye Bye

Thanks for all.
I think, I must use the portable version.

MG
Otti22

Thanks for yours answers.
At the last installing (yesterday) OPERA, Version: 58.0.3135.68, the installer don't ask, where to install.!! Can I use the Symbolic links?

Is the Chromium command like the Symbolic link, e.g. Junction?

The portable version is clear, may be the last end .

a) can I install OPERA on drive D :
b) ca I change the path of
Profil-Verzeichnis:
C:\Users\Otti22\AppData\Roaming\Opera Software\Opera Stable
Cache-Verzeichnis:
C:\Users\Otti22\AppData\Local\Opera Software\Opera Stable
in example to drive D :
because using a SSD-Drive

Thanks to you