(I don't know if this is the exact macbook you have - you might have to search ifixit)
In that case, you may have to try the Sugar or Netinstall versions mentioned
below, or look at replacing the DVD drive and then boot from that:
- [Trisquel-users] Install on macbook 2009 late taishu
- Re: [Trisquel-users] Install on macbook 2009 late leestrobel
- Re: [Trisquel-users] Install on macbook 2009 late taishu
- Re: [Trisquel-users] Install on macbook 2009 l... leestrobel
- Re: [Trisquel-users] Install on macbook 2009 late elias . howell
- Re: [Trisquel-users] Install on macbook 2009 late wdhgtx
- Re: [Trisquel-users] Install on macbook 2009 late leestrobel