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Greg Katz

*Edited 4 months ago

Unsupported disk layout for UEFI firmware, 0xc1900201

When I try to install the W10 version 2004 feature update I get the following error: Windows cannot be installed because this PC has an unsupported disk layout for UEFI firmware. 0xc1900201 I have a 2018 Dell XPS 15 9570 laptop.32GB, 1.0TB SSD, most current BIOS update from Dell that shows UEFI as the BIOS mode. Microsoft is telling me I have to do a full scratch install of the current shipping version of W10 and then install the 2004 feature update, thus, I have to do a full backup and restore, then reinstall all of the apps. Is this actually necessary? I'm hoping there's another way to do this. I've worked for software companies in the past and often times Tech Support resorts to a full remiage of the cmputer in order to fix a problem. Are they just lazy or for real? Your help is greatly appreciated.

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