installing to 1T sdxc (which overwrites gpt backup data)

[Ray Lance]

first tried gpt, then msdos, which demands new partitioning to install. Tried 100m efi, 20g root and 240g home, but the 240g failed toformat.

Then tried installing just to the 200g / -- copied 1.7g to the partition and then failed with a read-only message.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubiquity 19.04.9
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CasperVersion: 1.405
Date: Fri May 3 08:19:05 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)