It seems that the creation process for a bootable USB stick has changed for Debian Wheezy.
I used to create a bootable USB stick using syslinux
etc. This time I used a USB stick which had succesfully used before and copied the newest Testing iso on it. During the first part of the installation process the installer would fail with an error message like "could not find a mountable partition with a suitable iso image" or somthing like that. I could not copy that message of course and since I am succesfully installing, the message has disappeard.
The solution is simpler as you have ever dreamed of:
- Download the netinstaller ISO
- Copy it onto the USB stick using dd if=/your/iso of=/dev/sdc
Assuming /dev/sdc is the usb stick you are preparing. All data on the USB disk will be lost during this copy!
(Did I really have to say that?)
This solution works for the current Debian Testing Wheezy. The mainboard is ASUS M4A78LT-M