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i have upgraded ubuntu 18.4.4 to 20.4 but i'am wrong to located the grub into /boot/efi partition i can't change it

`sudo apt-get upgrade Reading package lists... Done Building dependency tree
Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Setting up grub-efi-amd64-signed (1.142+2.04-1ubuntu26) ... mount: /var/lib/grub/esp: /dev/sdb already mounted or mount point busy. dpkg: error processing package grub-efi-amd64-signed (--configure): installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32enter image description here Errors were encountered while processing: grub-efi-amd64-signed E: Sub-process /usr/bin/dpkg returned an error code (1)

can help me to fix this ?

the picture not want to disable /boot/efi when i choose grub install device

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1 Answer 1

Reset to default
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Try purging grub and reinstall. Worked for me!

sudo apt-get purge grub\*
sudo apt-get install grub-efi
sudo apt-get autoremove
sudo update-grub
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