** Description changed: - After downloading a 17.04 ubuntu-server image for ARM64: + [Impact] + On some arm64/efi platforms, the firmware will not be able to boot from an ISO dd'd to a USB stick. - http://cdimage.ubuntu.com/releases/17.04/release/ubuntu-17.04-server- - arm64.iso + [Test Case] + My test is to attach the ISO as an "HD/USB Image" to a Cavium CRB1S w/ AMI UEFI firmware using the BMC's Virtual Media. Note that the BMC requires that the file be renamed with a ".img" suffix. - and using it to create a USB drive with /usr/bin/usb-creator-gtk, I - can't boot the installer on my EFI-powered ARM64 machine, because the - image is not EFI compliant. - - See here: - - $ fdisk -l ubuntu-17.04-server-arm64.iso - Disk ubuntu-17.04-server-arm64.iso: 618.1 MiB, 648083456 bytes, 1265788 sectors - Units: sectors of 1 * 512 = 512 bytes - Sector size (logical/physical): 512 bytes / 512 bytes - I/O size (minimum/optimal): 512 bytes / 512 bytes - $ file ubuntu-17.04-server-arm64.iso - ubuntu-17.04-server-arm64.iso: ISO 9660 CD-ROM filesystem data 'Ubuntu-Server 17.04 arm64' (bootable) - - As you can see it's just a "flat" ISO 9660 image. In result my EFI - firmware doesn't even try using it as it expects a FAT32-formatted EFI - partition. Even after transferring the files over, I can't boot it, - because it doesn't come with EFI build of Grub (grubaa64.efi). Then, - after providing it manually I've managed to install the system, but with - problems again - the installer didn't find the media automatically (was - probably looking for partitions like /dev/sda1 while the media is only - available as /dev/sda). - - In comparison, the AMD64 version looks like this: - - $ fdisk -l ubuntu-17.04-server-amd64.iso - Disk ubuntu-17.04-server-amd64.iso: 685 MiB, 718274560 bytes, 1402880 sectors - Units: sectors of 1 * 512 = 512 bytes - Sector size (logical/physical): 512 bytes / 512 bytes - I/O size (minimum/optimal): 512 bytes / 512 bytes - Disklabel type: dos - Disk identifier: 0x5aac927d - - Device Boot Start End Sectors Size Id Type - ubuntu-17.04-server-amd64.iso1 * 0 1402879 1402880 685M 0 Empty - ubuntu-17.04-server-amd64.iso2 286608 291215 4608 2.3M ef EFI (FAT-12/ - $ file ubuntu-17.04-server-amd64.iso - ubuntu-17.04-server-amd64.iso: DOS/MBR boot sector ISO 9660 CD-ROM filesystem data (DOS/MBR boot sector) 'Ubuntu-Server 17.04 amd64' (bootable); partition 2 : ID=0xef, start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 286608, 4608 sectors - - Also, Debian testing images work fine, being built the EFI way: - - $ fdisk -l debian-testing-arm64-netinst.iso - Disk debian-testing-arm64-netinst.iso: 200 MiB, 209715200 bytes, 409600 sectors - Units: sectors of 1 * 512 = 512 bytes - Sector size (logical/physical): 512 bytes / 512 bytes - I/O size (minimum/optimal): 512 bytes / 512 bytes - Disklabel type: dos - Disk identifier: 0x00000000 - - Device Boot Start End Sectors Size Id Type - debian-testing-arm64-netinst.iso1 0 407551 407552 199M 83 Linux - debian-testing-arm64-netinst.iso2 407552 409599 2048 1M ef EFI (FAT-1 - $ + [Regression Risk] + For d-i, this is aligning the xorriso boot options with the same ones now used to build the server ISO.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1692876 Title: ubuntu-server ARM64 ISOs lack partition table with EFI System Partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-cdimage/+bug/1692876/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
