I have Windows XP and Linux Opensuse 10.3 installed. Normally there should be graphical interphase during boot but in my system initially there is a graphical screen to choose operating system. when I select Linux, then I get details of booting on a black screen, which normally should be seen after pressing esc button. In latter half of boot I get green screen.
So what is the reason for that and how I can correct the boot screen?

please post the contents of /boot/grub/menu.lst

you may have a "hiddenmenu' and or gfxmenu ....well you will have a gfxmenu but that is only for the grub menu animation...and after grub has made its selection the other splash screen or not....is in opensuse splashy or bootsplash.

we can tell from your menu but as there are a number of splash screens you need to understand which ones you do not want

default 0
timeout 8
gfxmenu (hd0,8)/boot/message

###Don't change this comment - YaST2 identifier: Original name: linux###
title openSUSE 10.3
root (hd0,8)
kernel /boot/vmlinuz-2.6.22.5-31-default root=/dev/disk/by-id/scsi-SATA_SAMSUNG_SP1213CS02AJ10X807579-part9 apm=off acpi=off mce=off barrier=off ide=nodma idewait=50 i8042.nomux psmouse.proto=bare irqpoll pci=nommconf resume=/dev/sda11 splash=silent sh acpi=offowopts
initrd /boot/initrd-2.6.22.5-31-default

###Don't change this comment - YaST2 identifier: Original name: windows###
title Windows
rootnoverify (hd0,8)
chainloader (hd0,0)+1

###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- openSUSE 10.3
root (hd0,8)
kernel /boot/vmlinuz-2.6.22.5-31-default root=/dev/disk/by-id/scsi-SATA_SAMSUNG_SP1213CS02AJ10X807579-part9 showopts ide=nodma apm=off acpi=off noresume nosmp noapic maxcpus=0 edd=off 3
initrd /boot/initrd-2.6.22.5-31-default

your line 3....put a # in front of gfxmenu will turn off that splash.

You need root powers to do that of course.

2) Did you tweak that kernel line (line 7 of visible text)?

apm=off acpi=off mce=off barrier=off ide=nodma idewait=50 i8042.nomux psmouse.proto=bare irqpoll pci=nommconf resume=/dev/sda11 splash=silent sh acpi=offowopts

3) what is your hardware please?
desktop or laptop

what is the exact make model of video card or onboard video chipset?

4) see this splash=silent....thats your bootsplash or splashy to hide the kernel messages on booting.

Change to splash=0 and see if that helps.

5) however I would add a vga=(x) parameter because you may have an issue with your video card

But do this only after rebooting with one change at a time...to make sure you can see what each change is doing.

a list of linux video numbers to try vga=abc
http://en.wikipedia.org/wiki/VESA_BIOS_Extensions

6) it is also a good idea to have backups of your current file and know how to use a live cd to rescue if you have an issue.

7) so try in this order
# gfxmenu and reboot....turns off grub animation
splash=0 and reboot ....turns off splashy or bootspash
vga=abc to give you text that is easier on the eye and reboot

good luck

I have pc desktop with intel original 915 gav motherboard with intel video onboard.
I donot want to turn off splash but want to bring it during initial phase of boot.
Splash is normal when kde loads
Also please give me easy answer because I donot want to go through manuals.
Change to splash=0 and see if that helps. It didnot work

yes well we have to first work out why you are getting a green screen....so I am suggesting you turn off the splashy or bootsplash.

1) did you use root powers to edit that kernel line pls?

2) if so, try removing that section pls...delete splash=blah and reboot.

3) can you confirm green screen appears before the kde splash pls