Lauch the “server manager” by pressing the Windows keyĪnd clicking on the server manage please see Screenshot as shown. Step By Step Guide to Enabling “Disk Cleanup Utility” 1. Or you can add the “Desktop” features to provide the Disk Cleanup tool: cacls c:\Windows.old\*.* /T /grant administrators:F.This can be done with the commands below: To delete, it is necessary to take ownership of the folder, give administrators full control, then delete. This isn’t available on a server OS without installing the Desktop Experience feature. How can I delete the windows.old from an upgraded Windows Server?įor a client OS that’s upgraded, the Disk Cleanup utility can be used to delete the very large windows.old folder containing the old OS. Command line tools to take ownership and delete the folder. On Desktop OS version, you can just use the disk cleanup tool to remove it, but that is not available (by default) on Servers, so there are a couple of approaches. ![]() If all is well, then you might as well just delete it. Anyway, let’s assume you’ve understand all the risks and have done a successful in-place upgrade, you now find the old WINDOWS.OLD folder of several GB in size sitting there. There is of course a difference between “what works” and “what is supported”, but we do suggest where possible you do a clean Server install and migrate your application to the new server. Exchange, ConfigMgr) that explicitly state they do not support upgrading the Operating System. ![]() Just a small point here, it is generally not recommended to do in-place upgrades on servers. When you try to delete it though you are told you don’t have permissions. This folder will have a backup of your old program files, appdata and Windows folder… just in case you need to revert back or recover something that might have been lost during the upgrade. ![]() After performing an in-place upgrade on a Windows machine, you will find a WINDOWS.OLD folder in the root of C.
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