Upgrade Proxmox 8 to 9 Step by Step (pve8to9, Ceph, noout)
How to upgrade Proxmox VE 8.4 to 9 on a 3-node cluster: run pve8to9, upgrade Ceph to Squid first, set the noout flag, switch apt to Trixie and dist-upgrade.
Upgrade Ceph Reef to Squid on Proxmox (Before PVE 9)
Step-by-step Ceph 18 Reef to 19 Squid upgrade on Proxmox VE 8.4: repository switch, package upgrade, monitors, managers and OSDs one node at a time.
Fix the Identity Management for UNIX Upgrade Block
Windows Server in-place upgrade blocked by Identity Management for UNIX: remove IDMU with DISM or comment out IDMUUpgradeComplianceCheck in compliance.ini.
Upgrading A Server 2012 R2 Domain Controller To Server 2019!
In-place upgrade of a Server 2012 R2 domain controller to Server 2019: run adprep /forestprep and /domainprep first and check the supported upgrade paths.
Upgrade Domain Controllers to a Newer Windows Server
Run adprep /forestprep and adprep /domainprep /gpprep before an in-place domain controller upgrade, with the supported paths from Server 2008 to 2022.