> Here is what the 'GPT:Primary header thinks Alt. header is not at the > end of the disk' message means: > <https://github.com/pengutronix/genimage/issues/175#issuecomment-1024139241>. Thank you: I was able to fix the error using fdisk with just the command "w". However, this does not make my USB stick bootable as UEFI. I tried another one (Kingston, 32 Gb). Here again, I needed to fix the GPT alternate header with fdisk but I still cannot boot as UEFI with it. Note that in the partition manager, I see a different partition structure between the F30 and F40 USB sticks: * F30 USB that works fine: /dev/sda1, iso9660, 1.76 Gb /dev/sd2, fat16, label: ANACONDA, 9.74 Mb /dev/sd3, hfsplus, label: ANACONDA, 20,50 Mb * F40 USB that does not work: /dev/sdb1, iso9660, name: ISO9660, 2.45 Gb /dev/sdb2, fat16, label: ANACONDA, name: Appended2, 12.47 Mb /dev/sdb3, unknown, name: Gap1, 300 kb So I'm still not able to boot F40 on a USB stick. Maybe, I should try F39 or F38. If it works, I will be able to upgrade later. Thanks for your help, F -- _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue