Insert your USB stick or DVD and reboot your computer as if you were going to install Ubuntu. You will see a menu that includes "Check disk for defects". Select that option. Your computer will check the ISO image. If it finds an error then you will not be able to install Ubuntu but will have to start again by re-writing the downloaded ISO image to USB or DVD.
You should also check your downloaded ISO. See https://help.ubuntu.com/community/HowToMD5SUM Good luck! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1873317 Title: can't install ubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1873317/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
