Actually i am using offline installers, i had downloaded the three iso images of different different versions of Ubuntu Desktop not nothing works, i am using the offline method, in this i am getting these errors.
Yesterday, i did it by online method, and it works.
1.take one pendrive ,which is capable to hold the ubuntu os.
2.download unet.bootin software.
3.make the pendrive boot-able of ubuntu os with help of unet.bootin software.
4.you need make one partition for ubuntu os.(optional)
5.plug the pendrive, restart the pc, boot the pc from the pendrive, then you can install the ubuntu os,
caution:
the ubuntu partition must not same as the windows partition
1.take one pendrive ,which is capable to hold the ubuntu os.
2.download unet.bootin software.
3.make the pendrive boot-able of ubuntu os with help of unet.bootin software.
4.you need make one partition for ubuntu os.(optional)
5.plug the pendrive, restart the pc, boot the pc from the pendrive, then you can install the ubuntu os,
caution:
the ubuntu partition must not same as the windows partition