Windows 10: MBR2GPT Last partition too close to the end of the disk

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The MBR2GPT is a built-in tool in Windows computers that allows users to convert their hard drive partition style from MBR to GPT without data loss. If your disk does not meet the requirements, this tool shows the error. The “MBR2GPT validation failed, Last partition too close to the end of the disk, Should end […]

This article MBR2GPT Last partition too close to the end of the disk first appeared on TheWindowsClub.com.

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MBR2GPT: ValidateLayout: Too many MBR partitions found, no room to create EFI system partition.

Please see "Disk Prerequisites" in the following article:

MBR2GPT - Windows Deployment | Microsoft Learn: https://learn.microsoft.com/en-us/windows/deployment/mbr-to-gpt

Excerpt from that article:

Before any change to the disk is made, MBR2GPT validates the layout and geometry of the selected disk to ensure that:

• The disk is currently using MBR
  
• There's enough space not occupied by partitions to store the primary and secondary GPTs:
  
  • 16 KB + 2 sectors at the front of the disk
    
  • 16 KB + 1 sector at the end of the disk
    
• There are at most three primary partitions in the MBR partition table
  
• One of the partitions is set as active and is the system partition
  
• The disk doesn't have any extended/logical partition
  
• The BCD store on the system partition contains a default OS entry pointing to an OS partition
  
• The volume IDs can be retrieved for each volume that has a drive letter assigned
  
• All partitions on the disk are of MBR types recognized by Windows or has a mapping specified using the /map command-line option
  

If any of these checks fails, the conversion doesn't proceed, and an error is returned.

You may need to delete one of the Recovery partitions on Disk 2.

 

MBR2GPT: ValidateLayout: Too many MBR partitions found, no room to create EFI system partition.

Ok, is it safe for me to delete the inactive recovery partition? Do I need to create a recovery drive before doing it?

 

W7 Hard drive partition issue

to get rid of that 100 meg windows partition that setup creates for you on a new install on a blank hdd:

- press shift+f10 when on the partition management screen in setup <-- this opens a command prompt
- diskpart <-- start the windows command line partition management tool
- list disk <--- list the installed hdds in this computer for the next step
- select disk 0 <- might have to replace 0 with the number of the correct disk
- clean <-- this will erase all data on the disk you selected one step up- dont use the wrong disk!
- create partition primary <- creates a primary partition taking up all space on the drive, adjust the command if necessary
- exit, exit to exit diskpart and the command prompt
- click refresh in partition manager and select your newly created partition and install to that