Here is everything you need to know about the download size, installation footprint, and the storage requirements for this update. Windows 24H2 Download Size

If you are running a modern PC with a 256 GB or larger SSD, the size of 24H2 is not an issue. However, (common in budget laptops), you will likely need to:

A widely reported issue with the 24H2 update is a reporting error in the Disk Cleanup tool. Many users see files that cannot be deleted.

The installation process takes longer (often 30–60 minutes).