Win10 upgrade error code 1049 how to solve?

1. The error message is as follows. I don't understand what it means. Click the <go to Storage> menu to see the allocation of various file storages. There are no executable choices.

2, the error is said to need 0M extra space, and transfer to the storage is also looking at the allocation of space on the hard disk, Xiaobian estimated or space problem, so it has created a 500M The new partition is used for temporary space, and the result is still the same.

3, Xiaobian only has one partition, it is speculated that the root partition is too small, anyway, the virtual machine, first expand the root partition to 40G, and then re-update the attempt, if it is a physical machine, only reload , or a new partition that is large enough to be installed on the new partition.

4. This installation is relatively smooth, no error, the only upgrade process is extremely long, lasting about 4 hours. As shown in the figure below, the progress of the upgrade is one grid, so please be patient.

5. After the upgrade is completed, check the space occupied by the C drive. Use nearly 30G to ensure that the above error is caused by insufficient root partition. The error message may be incorrect. The main reason is to generate the windows.old directory, which is estimated to be used to fall back to the previous preview.

6. The upgrade of the 1049 version is an upgrade by reinstalling the operating system, instead of patching the patch. The downloaded patch contains the entire image of win10 1049, and the ISO file can be directly created. Xiaobian's other experience describes how to extract ISO for a new installation. If there is not much application information that needs to be retained, it will be much faster than a new installation.