I have three partition(/dev/sda1, sda2 and sda3). The first partition /dev/sda1 is default ubuntu and mounted as root("/"), remaining two partition not any mount points. If I want then go to mount the partitions.
I want to install ubuntu in /dev/sda2 partition. manually I unsquashfs the filesystem and copied kernel and initrd from iso image. After that I adding the menu entries in grub configuration file. finally that booted fine but it was mount read-write mode. I want to write read-only(ro) mode. how to mounted read only or where to mention read-only flag. please any one have answer let me know.