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windows:windows10:uefi_boot [2020/09/18 14:04] – niziakwindows:windows10:uefi_boot [2026/02/03 10:39] (current) – niziak
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 With command prompt: With command prompt:
 +
 +<code shell>
 +mbr2gpt /validate /allowFullOS
 +
 +disk layout failed for disk 0
 +</code>
 +
 +It means that there is no space for EFI parition or MBR disk contains already 4 partitions.
 +
 +The common cause is that Windows creates more recovery partitions if default is too small (created as first and cannot be expanded later).
 +So probably one used is the recovery partition just after system or data partition. In this combination Windows can expand recovery partition if needed by shrinking data partition. More info here: [[https://www.tenforums.com/windows-insider/144556-windows-10-version-20h1-brings-important-change-windows-setup.html|Windows 10 Version 20H1 brings an important change in Windows Setup ]]
 +
 +To detect which recovery is used:
 +
 +<code shell>
 +diskpart
 +list disk
 +select disk 0
 +detail disk
 +  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
 +  ----------  ---  -----------  -----  ----------  -------  ---------  --------
 +  Volume 1         Zastrzeżone  NTFS   Partition    500 MB  Healthy    System
 +  Volume 2     C                NTFS   Partition     72 GB  Healthy    Boot
 +  Volume 3         Windows RE   NTFS   Partition    864 MB  Healthy    Hidden
 +  Volume 4                      NTFS   Partition    526 MB  Healthy    Hidden
 +
 +select partition 4
 +delete partition override
 +</code>
 +
 <code shell> <code shell>
 diskpart diskpart
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 bcdboot X:\windows /s S: bcdboot X:\windows /s S:
 +bootrec /rebuildbcd
 </code> </code>