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I installed Ubuntu 20.04 on a USB drive. The installation was done in UEFI mode and has an EFI partition using FAT32. The problem is that when booting on a new device every time it creates an entry to UEFI called ubuntu. It remains even after removing the USB. Another problem is that it takes a very long time to close the system by unmounting /boot/efi Is there any easy way to solve these problems? Thank you very much for your help

  • Lets see details, use ppa version with your live installer (2nd option) or any working install, not older Boot-Repair ISO: Please copy & paste the pastebin link to the Boot-info summary report ( do not post report), do not run the auto fix till reviewed. help.ubuntu.com/community/Boot-Repair – oldfred Jun 29 at 17:13
  • Done following instruction. Here is the link link – Ziober Jun 30 at 20:38
  • Install looks normal. UEFI boots external devices from /EFI/Boot/bootx64.efi and description will be your flash drive's name or label. The Ubuntu entry will work only on installed system. And often when you unplug a drive the entry is changed and does not work. Report only shows one Ubuntu entry, line 50 in report from sudo efibootmgr -v if running command just to list entries from terminal. – oldfred Jun 30 at 21:06
  • Sorry for late reply There is the output of the command link The thing that new entry is annoying but i can life with it. But what to do about long shutdown time? Do you have any ideas? Big thanks for help – Ziober Jul 2 at 16:26
  • Best to ask about slow shutdown on separate question. But write to flash drives is normally slow. You can check log files for what is taking a long time to time out. And post that in new question. Your efibootmgr -v is essentailly same as from Boot-Repair's report and only shows one entry. When using UEFI one time boot key, do you not get an USB flash drive boot option? – oldfred Jul 2 at 17:20

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