Is the bootloader "GRUB" same for all linux platforms

[rameez.aboobacker]

While i m installing different OS named mandriva as well as ubuntu..
i had felt a doubt on bootloader.

Is the bootloader "GRUB" same for all linux platforms?

If no then why we say it as an open source?

[wilee-nilee]

While i m installing different OS named mandriva as well as ubuntu..
i had felt a doubt on bootloader.

Is the bootloader "GRUB" same for all linux platforms?

If no then why we say it as an open source?

NO there is grub-legacy, and now grub2. As far as what open source is see Google.

[Rubi1200]

For more information regarding the differences between GRUB-legacy and GRUB2:
http://ubuntuforums.org/showthread.php?t=1195275

Also includes a wealth of information about GRUB2.

More information:
http://www.gnu.org/software/grub/