Tag: 100MB

Jan 11

Fix – Windows 11 upgrade fails with ‘We couldn’t update system reserved partition’

Some Windows 10 preloads have a small EFI System Partition of 100MB which is enough for 10 but might cause the upgrade to Windows 11 to fail with the message ‘We couldn’t update system reserved partition’ error code 0xc1900104, or error code 0x800f0922. Without the need for partition resizing tools you should be able to …

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