Why it asking me for options to be selected while I run:
. I am in verse to compile latest reased kernel 2.6.34-rc5 on Ubuntu 9.10?

what i did is Just pressed "Enter" key ( i think it will dsiable everything?Not sure) and created a .config file.

The point behind make oldconfig is that it takes any existing configuration options, but there are invariably new options not covered by the old kernel and it is asking you what to do with those. There are default answers (in capital letters) that will be applied if you just press Enter. Not all of the new options will be disabled by default, so you do need to pay attention to those defaults.

Can't I use make menuconfig and enable all the options with a single shot.
What if I select all the options, will it again throw error during make install after make modules_install

As far as I know, there is no way to use make menuconfig to enable all options at a go. However, the .config file is just text, so you could probably use a simple text editor with Search/Replace to do it. However, I have absolutely no idea why you would want to configure a kernel this way. The amount of stuff that would be added that would be useless for any individual machine would be staggering. Some of the stock kernels in distros probably have most modules made, but certainly not all of them.

From kernel "make help":


But, I have the same opinion of Hangdog42: why, when building your own kernel, compile everything in it? It will make a huge kernel with lots of things you won't make any use.

Whenever you want to use a new kernel, I suggest you do it that way:
1. Launch Linux with a usable kernel
2. Install the sources of the new kernel in /usr/src
3. Go to the new kernel source tree. In your case : 4. Put the .config associated to the running kernel in the new tree:
5. run: 4. In the process, read the help for each option before answering it as needed. This takes some time, but what would be the point in upgrading your kernel if not to use some new feature or driver it includes?
5. Make the kernel image, the modules, install the modules, update your boot loader configuration file accordingly and run it.

To know more about available make options, just type "cd /usr/src/linux-2.6.34-rc5" then "make help".