RAM mode will allow you to boot your system, and use read and write to RAM rather then to the user partition. Its useful for system recovery when busybox is too simple, and for general use to prevent writes to the ssd.
You will need to be root to do all this, so start with
First thing we need to do is create an initramfs. So first create a temporary directory.
Change directory into your temporary directory.
Now decompress your regular initramfs file
zcat /boot/initramfs-eeepc.img | cpio -id
Now open the init in a text editor, now find and change the text below.
if ! mount -t ext3 -o rw /dev/sda2 /mnt-user; then echo Error mounting user partition. Must run filesystem scan! exec switch_root /mnt-system /sbin/scanuser.sh fi
if ! mount -t tmpfs -o rw user /mnt-user; then echo Error mounting tmpfs user partition. fi
Now create your new initramfs file
find . | cpio -o -H newc | gzip > /boot/initramfs-ram_mode.img
And clean up after yourself
cd /root rm -r /root/temp
We need to move this onto sda1 so boot into rescue mode and mount sda1 and sda2.
mkdir /sda1 mkdir /sda2 mount -t ext2 /dev/sda1 /sda1 mount -t ext3 /dev/sda2 /sda2
Now move the file.
mv /sda2/boot/initramfs-ram_mode.img /sda1/boot/initramfs-ram_mode.img
Now use open your grub config file with vi.
And add this.
title Ram Mode root (0x80,0) kernel /boot/vmlinuz-184.108.40.206-eeepc quiet rw vga=785 irqpoll root=/dev/sda1 initrd /boot/initramfs-ram_mode.img
Finally, umount both partitions and wait at least 30 seconds (Important!). The umount steps and the waiting are there to make sure all data is written to the disk and all disk caches are flushed. If you skip these steps it might be that your data gets corrupted or you will get filesystem error.
umount /mnt-system umount /mnt-user
Then reboot and you have it, just use F9 at boot and select it.
The RAM mode described above are for booting with factory settings only. If you have customized your Eeepc and would like to use your custom settings in RAM mode, you can build another initramfs image in exactly the same way but with a different init as discussed in this thread: Possible to run in a "READ ONLY" state?.