I first installed Ubuntu and then I removed it and wanted to install it again. So, this time, I saw there were a number of partitions already there, so I deleted all except the drives I had my data in. Then I made a partition for Ubuntu and installed it, but now I am unable to boot Windows 8, which was already there.
I think I deleted the partition for grub also.
Kindly suggest to me what to do. Even UEFI settings is not showing any option for either Windows nor Ubuntu. I have now downloaded
boot-repair and am able to boot Ubuntu but not Windows. Please give advice.