grub-pc configure fails during upgrade from 22.04 to 24.04

[Marc Rijken]

During upgrade to 24.04 and afterwards when executing "apt upgrade" I get the following error:

Setting up grub-pc (2.12-1ubuntu7) ...
Installing for i386-pc platform.
mdadm: /dev/md does not appear to be an md device
grub-install: error: ioctl RAID_VERSION error: Inappropriate ioctl for device.
dpkg: error processing package grub-pc (--configure):
 installed grub-pc package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 grub-pc
E: Sub-process /usr/bin/dpkg returned an error code (1)

The system does function normally, but I can not finish the upgrade.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: grub-pc 2.12-1ubuntu7
ProcVersionSignature: User Name 6.8.0-41.41-generic 6.8.12
Uname: Linux 6.8.0-41-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
CasperMD5CheckResult: unknown
CloudArchitecture: x86_64
CloudBuildName: server
CloudID: configdrive
CloudName: configdrive
CloudPlatform: configdrive
CloudSerial: 20221104
CloudSubPlatform: config-disk (/dev/sda5)
Date: Fri Sep 6 21:28:09 2024
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm
 XDG_RUNTIME_DIR=<set>
SourcePackage: grub2
UpgradeStatus: Upgraded to noble on 2024-08-30 (8 days ago)
mtime.conffile..etc.init.d.apport: 2024-07-22T14:59:07