unable to upgrade to 20 from dual boot v18 and XP

[joe]

I have been trying to upgrade my dual boot system which has v18 and XP to v20 + XP. no luck.

I cloned the old setup to a new drive and tried various ways to install 20 from a usb drive.

Somehow setup is not recognising XP.

1. I deleted the old ubuntu drive and fixed the XP MBR issue. XP loads ok but installing v20 did not recognise the XP installation. I tried the proposed fix in XP by running chkdsk in administrator mode but no luck.

2.I tried to install on top of v18 on the fully working clone. The setup was only able to see v18. It did not see the XP. system started to install but failed eventually.

hope you can help

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15.2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CasperVersion: 1.445.1
CurrentDesktop: ubuntu:GNOME
Date: Mon Dec 21 16:53:44 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Bug reporting is primarily about finding & fixing problems thus preventing future users from hitting the same bug.

Support sites may be more appropriate, eg. https://answers.launchpad.net/ubuntu. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community-support/709