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Tuesday, June 24, 2008

GRUB and why root!=root

It one of the this 'keep in mind notes'. I tried to install the Fedora 9 along the Ubuntu 8.04. The Fedora went onto the sdb3 partition or (hd1,2) in the GRUB notation. I added following lines to the Ubuntu /boot/grub/menu.lst file. (I didn't install GRUB from Fedora).
title        Fedora 9
root        (hd1,2)
kernel        /boot/vmlinuz-2.6.25-14.fc9.i686 root=/dev/sdb3 ro
initrd        /boot/initrd-2.6.25-14.fc9.i686.img
But it wanted to work. All the time, I got Error 2 : Bad file or directory type. After trying many things I figured out that problem is lack of the GRUB files at the Fedora partition, so I updated grub config file.
title        Fedora 9
root        (hd0,0)
kernel        (hd1,2)/boot/vmlinuz-2.6.25-14.fc9.i686 root=/dev/sdb3 ro
initrd        (hd1,2)/boot/initrd-2.6.25-14.fc9.i686.img
Finally, the Fedora started to boot.

Wednesday, June 04, 2008

Yet Another Gnuplot Script

I'm preparing presentation for the Public Defence of my PhD thesis. I'm creating few plots and of course I'm using gnuplot for them. One of plots is seems to be really simple: three 'columns' each in other colour, but it took me few hours to make it. I'm glad that I finally did it so I'm sharing my scripts with you (I needed Postscript for Greek's symbols):
set term postscript eps enhanced color
set output "nlo-rhb-cc.eps"
set ylabel '{/Symbol b} [10^{-30} esu]'
set style data histogram
set style histogram cluster gap 1
set style fill solid border -1
set boxwidth
unset xtics

plot [-0.5:.7][-15000:0] "cc.csv" using 1 ti col, '' using 2 ti col, '' using 3 ti col
If you would like to try use the data below: and data:
-14720.51945800 -6960.7083277 -10843.140 
BTW. I noted three new interesting website related to the gnuplot: