This is a question relative to the post How to fix "error: unknown filesystem. grub rescue
I've follow the post of virpara step by step on an Asus EeePC 1015PEM (don't know if it's usefull to presice this, in fact yes, it's to say that I can't insert a CD in this computer...) and i'm stuck on step 5 (Load the Linux kernel and initrd image)
I've typed, in this order :
set prefix=(hd1,msdos1)/usr/lib/grub/i386-pc insmod linux normal //seen that on an other website loopback loop (hd2,msdos1)/Setup/ubuntu-12.04.1-desktop-i386.iso //the image is on an external hard disk (does it matter ?) set root=(loop)
and had no return message (no error message), then when I typed :
linux /casper/vmlinuz boot=casper iso-scan/filename=/ubuntu-12.04.1-desktop-i386.iso noprompt noeject
here, I have the famous message:
error: unknown filesystem
I don't really know were is my mistake but I suppose it makes impossible for me to reach further steps and achieve grub recuperation.
I'll be grateful if someone could explain were seem to be my problem.