[Bug 1901137] Re: UEFI on Legacy - grub-install fails due to no space left on ESP

[Matt]

As additional confirmation that the installer was trying to write the
MBR to the install media, I was successful in installing 20.10 from the
same install media on the same hardware by booting the install media to
ram, as described here:
https://askubuntu.com/questions/829917/can-i-boot-a-live-usb-fully-to-
ram-allowing-me-to-remove-the-disk.

I then removed the install media once live, and ran the install, and all
installation went without a hitch, and I am now commenting from a fresh,
new 20.10 install.

In my case, install media is a removable SD card, if that's pertinent.

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https://bugs.launchpad.net/bugs/1901137

Title:
  UEFI on Legacy - grub-install fails due to no space left on ESP

Status in ubiquity package in Ubuntu:
  Triaged

Bug description:
  The system has PCLinuxOS on sda1 and sda2 Linux Mint 20 on sda9 and
  sda10 Windows 7 on sdb1 Windows 10 on sdb2

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: ubiquity 20.10.13
  ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
  Uname: Linux 5.8.0-25-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu50
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.455
  Date: Fri Oct 23 12:26:45 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-mate.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu-MATE 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  RebootRequiredPkgs:
   linux-image-5.8.0-25-generic
   linux-base
   linux-base
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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