not enough boot space

i tried to install a kernel update but keep getting the message that i don’t have enough boot space
I googled this problem and heard that if you free old kernel images we can solve this issue.
Somebody please help…

You do tell almost nothing about your setup. And we are not clairvoyant.

Which version of openSUSE?

Do you have a separate partition for /boot?

When, or when not, what is the free space on either /boot or /?

df -h

And you can normaly use YaST > Software > Software Management to see what kernels are installed. And from there you can deinstall those you do not need anymore. For backup reasons one or two kernels are kept by YaST to make sure you can boot even if a kernel update went wrong. You can switch that off. Wait for others to help you there. But providing the wanted, partly very basic, information asked above will help.

my bad
i am running opensuse 13.2
and i am having another os as windows 8

OP you didn’t provide complete info

You may want to post output as root of

blkid

or

lsblk

Where is the output

How many kernels are installed. Post the output of

ls /lib/modules

that was a problem of keeping old linux kernels in my boot space

by googling i did manage my problems now

and i removed my iso image files now everything works fine