Dears,
Same for me [SOLVED] , created efi partition and convert the existing mbr partition to gpt by gparted utilities and after that i am able to install windows 8.1 alongside ubuntu 18.04 dual boot. Thanks for your response, Rajdeep On Fri 17 Aug, 2018 4:51 pm Guilherme Steinmuller Pimentel, < gsteinmul...@vexxhost.com> wrote: > [SOLVED] actually solved by creating an EFI partition. So ignore the > above comment. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1766945 > > Title: > (EFI on top of legacy install) choosing "replace" or "resize" options > in partitioning may lead to an install failure > > Status in partman-auto package in Ubuntu: > Fix Released > Status in partman-efi package in Ubuntu: > Fix Released > Status in ubiquity package in Ubuntu: > Fix Released > Status in partman-auto source package in Bionic: > Fix Released > Status in partman-efi source package in Bionic: > Fix Released > Status in ubiquity source package in Bionic: > Fix Released > > Bug description: > [Impact] > > If I have existing data on disk built by a previous version of Ubuntu > (in BIOS (legacy) mode, or a previous Windows install, and no EFI > system partition on disk; the installer presents three choices: > > - Replace $existing and reinstall. (if a previous Ubuntu install was > found) > - Resize and install > - Erase disk and install. > > The first two options will attempt to complete the installation in EFI > mode (as they should) but do not create an EFI system partition, which > is required as a place to put shim and grub on disk for booting. The > installer will then crash / fail as grub-install fails to find the ESP > when copying the bootloader. > > The last option works correctly, it creates the ESP as it erases the > entire disks and proceeds with new partitioning. > > The proposed changes fix ESP creation for the replace and resize > cases, additionally disabling the reuse-partition option as it would > lead to unbootable systems without an existing ESP. > > [Test Case] > > A few valid cases to try, both for desktop and server, each of these > on a clean disk: > > * In legacy BIOS mode, install Ubuntu (whole disk). > * Switch to UEFI mode > * Start the Ubuntu installer. > * In partitioning, make sure the 'reuse existing partition' option is > not visible (reuse, 'replace' should still be present). > * Select resize and install. > * Check if installation succeeds and system boots. > > * In legacy BIOS mode, install Ubuntu (whole disk). > * Switch to UEFI mode > * Start the Ubuntu installer. > * In guided partitioning select the replace existing and install option. > * Check if installation succeeds and system boots. > > * In legacy BIOS mode, install Ubuntu (manual partitioning, create 3 > primary partitions, leave enough free space for another install). > * Switch to UEFI mode > * Start the Ubuntu installer. > * In guided partitioning select the use biggest free space option. > * Check if installation succeeds and system boots. > > * In UEFI mode start the Ubuntu installer. > * Select a clean whole-disk install. > * Check if installation succeeds and system boots. > > Additional random partitioning scheme dogfooding tests are welcome. > > [Regression Potential] > > The main change affects the recipes for -amd64-efi cases, so > theoretically in the worst-case scenario there might be some problems when > installing systems in UEFI mode with guided partitioning, like: wrong > partitioning scheme present or the ESP not correctly created. But those > regressions should be easily noticeable during testing. > Another small regression potential is in invalid ESP counting and the > users not getting the 'reuse partition' option even if the ESP is present. > But that also should be covered through the tests. > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/1766945/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766945 Title: (EFI on top of legacy install) choosing "replace" or "resize" options in partitioning may lead to an install failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/1766945/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs