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Shifting from BIOS to UEFI with the Windows 10 Creators Update MBR2GPT disk conversion tool
Comprehensive yet quick video overview that explains how you can safely and non-destructively convert a Windows 10 machine from legacy BIOS to UEFI disk partitioning; and how you can automate the con...
I have been trying to use this converter for a few days now and always get stuck on
MBR2GPT: Trying to shrink the OS partition
Here is the log:
2018-08-01 12:16:43, Info MBR2GPT was explicitly asked to run in full OS mode.
2018-08-01 12:16:43, Info MBR2GPT: Attempting to convert disk 0
2018-08-01 12:16:43, Info MBR2GPT: Retrieving layout of disk
2018-08-01 12:16:43, Info MBR2GPT: Initial partition information
2018-08-01 12:16:43, Info ===========================================================
2018-08-01 12:16:43, Info Partition layout for disk: 0
2018-08-01 12:16:43, Info Partition style : MBR
2018-08-01 12:16:43, Info MBR signature: 3030528643
2018-08-01 12:16:43, Info Number of partitions : 1
2018-08-01 12:16:43, Info ===================PARTITION===============================
2018-08-01 12:16:43, Info Number: 1
2018-08-01 12:16:43, Info Type: 7
2018-08-01 12:16:43, Info Boot: Yes
2018-08-01 12:16:43, Info Recognized: Yes
2018-08-01 12:16:43, Info Style: 0
2018-08-01 12:16:43, Info Offset: 1048576
2018-08-01 12:16:43, Info Length: 958046142464
2018-08-01 12:16:43, Info Volume: \\?\Volume{b4a23283-0000-0000-0000-100000000000}\
2018-08-01 12:16:43, Info Drive: C:\
2018-08-01 12:16:43, Info NT Path: \Device\HardDisk0\Partition1
2018-08-01 12:16:43, Info ===========================================================
2018-08-01 12:16:43, Info ESP partition size will be 104857600
2018-08-01 12:16:43, Info MBR2GPT: Validating layout, disk sector size is: 512 bytes
2018-08-01 12:16:43, Info BCD: Opening store. Flags: 0x0
2018-08-01 12:16:43, Info BCD: Store path: "\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
2018-08-01 12:16:43, Info BCD: Loaded hive at BCD00000000
2018-08-01 12:16:43, Info BCD: Opening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
2018-08-01 12:16:43, Info FindOSPartitions: Default boot entry: {6B5EAFC2-954A-11E8-888E-001A7DDA7113}
2018-08-01 12:16:43, Info BCD: Opening object {6b5eafc2-954a-11e8-888e-001a7dda7113}
2018-08-01 12:16:43, Info VERBOSE: Device path: \Device\HarddiskVolume5
2018-08-01 12:16:43, Info VERBOSE: Dos path: \\?\GLOBALROOT\Device\HarddiskVolume5
2018-08-01 12:16:43, Info FindOSPartitions: Volume name for the default boot entry: \\?\Volume{b4a23283-0000-0000-0000-100000000000}\
2018-08-01 12:16:43, Info BCD: BcdGetElementDataWithFlags: Failed to open key.Object: {6b5eafc2-954a-11e8-888e-001a7dda7113} Type: 14000008 Status: c0000034
2018-08-01 12:16:43, Info FindOSPartitions: No Recovery sequence found.
2018-08-01 12:16:43, Info FindOSPartitions: Default boot entry locale: en-us
2018-08-01 12:16:43, Info Bitlocker protection for C:\ is either off or suspended.
2018-08-01 12:16:43, Info Unique ID recap for volumes:
2018-08-01 12:16:43, Info Volume name: \\?\Volume{b4a23283-0000-0000-0000-100000000000}
2018-08-01 12:16:43, Info Unique ID size: 12
2018-08-01 12:16:43, Info MBR2GPT: System partition cannot be removed in full OS mode, leaving it untouched.
2018-08-01 12:16:43, Info MBR2GPT: Trying to shrink the OS partition
I have a SanDisk SSD
I noticed that when I try to shrink Volume via Disk management it just hangs on the next window, the Activity Monitor shows a Service Host: Disk Defragmenter / Optimize drives process tat is using 10% CPU, has a growing memory usage as well as about 10MB/s disk usage
The exact same thing happens when the MBR2GPT process is "stuck" on Trying to shrink the OS partition
I partitioned the disk using a 3rd party software and create a 2GB Unallocated sector and tried again, same issue.
I also remove the 2 recovery partition on the drive. (I have a USB disk with the windows recovery system)
I am not sure what is going on, but I would really hate to do a complete wipe of the drive and start from scratch.
I welcome any ideas at this point.
I gave it some time and now it failed:
2018-08-01 12:52:50, Info MBR2GPT was explicitly asked to run in full OS mode.
2018-08-01 12:52:50, Info MBR2GPT: Attempting to convert disk 0
2018-08-01 12:52:50, Info MBR2GPT: Retrieving layout of disk
2018-08-01 12:52:50, Info MBR2GPT: Initial partition information
2018-08-01 12:52:50, Info ===========================================================
2018-08-01 12:52:50, Info Partition layout for disk: 0
2018-08-01 12:52:50, Info Partition style : MBR
2018-08-01 12:52:50, Info MBR signature: 3030528643
2018-08-01 12:52:50, Info Number of partitions : 1
2018-08-01 12:52:50, Info ===================PARTITION===============================
2018-08-01 12:52:50, Info Number: 1
2018-08-01 12:52:50, Info Type: 7
2018-08-01 12:52:50, Info Boot: Yes
2018-08-01 12:52:50, Info Recognized: Yes
2018-08-01 12:52:50, Info Style: 0
2018-08-01 12:52:50, Info Offset: 1048576
2018-08-01 12:52:50, Info Length: 957941284864
2018-08-01 12:52:50, Info Volume: \\?\Volume{b4a23283-0000-0000-0000-100000000000}\
2018-08-01 12:52:50, Info Drive: C:\
2018-08-01 12:52:50, Info NT Path: \Device\HardDisk0\Partition1
2018-08-01 12:52:50, Info ===========================================================
2018-08-01 12:52:50, Info ESP partition size will be 104857600
2018-08-01 12:52:50, Info MBR2GPT: Validating layout, disk sector size is: 512 bytes
2018-08-01 12:52:50, Info BCD: Opening store. Flags: 0x0
2018-08-01 12:52:50, Info BCD: Store path: "\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
2018-08-01 12:52:50, Info BCD: Loaded hive at BCD00000000
2018-08-01 12:52:50, Info BCD: Opening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
2018-08-01 12:52:50, Info FindOSPartitions: Default boot entry: {6B5EAFC2-954A-11E8-888E-001A7DDA7113}
2018-08-01 12:52:50, Info BCD: Opening object {6b5eafc2-954a-11e8-888e-001a7dda7113}
2018-08-01 12:52:50, Info VERBOSE: Device path: \Device\HarddiskVolume5
2018-08-01 12:52:50, Info VERBOSE: Dos path: \\?\GLOBALROOT\Device\HarddiskVolume5
2018-08-01 12:52:50, Info FindOSPartitions: Volume name for the default boot entry: \\?\Volume{b4a23283-0000-0000-0000-100000000000}\
2018-08-01 12:52:50, Info BCD: BcdGetElementDataWithFlags: Failed to open key.Object: {6b5eafc2-954a-11e8-888e-001a7dda7113} Type: 14000008 Status: c0000034
2018-08-01 12:52:50, Info FindOSPartitions: No Recovery sequence found.
2018-08-01 12:52:50, Info FindOSPartitions: Default boot entry locale: en-us
2018-08-01 12:52:50, Info Bitlocker protection for C:\ is either off or suspended.
2018-08-01 12:52:50, Info Unique ID recap for volumes:
2018-08-01 12:52:50, Info Volume name: \\?\Volume{b4a23283-0000-0000-0000-100000000000}
2018-08-01 12:52:50, Info Unique ID size: 12
2018-08-01 12:52:50, Info MBR2GPT: System partition cannot be removed in full OS mode, leaving it untouched.
2018-08-01 12:52:50, Info MBR2GPT: Trying to shrink the OS partition
2018-08-01 13:24:29, Info MBR2GPT: Partition final size is: 957836427264
2018-08-01 13:24:29, Info MBR2GPT: Creating the EFI system partition
2018-08-01 13:24:29, Info Initializing VDS service
2018-08-01 13:24:29, Info Obtaining the VDS disk interface
2018-08-01 13:24:29, Info Retrieving the VDS disk properties
2018-08-01 13:24:29, Error PreparePartition: cannot format partition. Error: 0x00000000, async error: 0x80070057[gle=0x000036b7]
2018-08-01 13:24:29, Error Cannot create EFI system partition. Error: 0x000036B7[gle=0x000036b7]
2018-08-01 13:24:29, Info MBR2GPT: Partition information at error point
2018-08-01 13:24:29, Info ===========================================================
2018-08-01 13:24:29, Info Partition layout for disk: 0
2018-08-01 13:24:29, Info Partition style : MBR
2018-08-01 13:24:29, Info MBR signature: 3030528643
2018-08-01 13:24:29, Info Number of partitions : 1
2018-08-01 13:24:29, Info ===================PARTITION===============================
2018-08-01 13:24:29, Info Number: 1
2018-08-01 13:24:29, Info Type: 7
2018-08-01 13:24:29, Info Boot: Yes
2018-08-01 13:24:29, Info Recognized: Yes
2018-08-01 13:24:29, Info Style: 0
2018-08-01 13:24:29, Info Offset: 1048576
2018-08-01 13:24:29, Info Length: 957836427264
2018-08-01 13:24:29, Info Volume: \\?\Volume{b4a23283-0000-0000-0000-100000000000}\
2018-08-01 13:24:29, Info Drive: C:\
2018-08-01 13:24:29, Info NT Path: \Device\HardDisk0\Partition1
2018-08-01 13:24:29, Info ===========================================================
2018-08-01 13:24:29, Info MBR2GPT-undo: Extending back the OS partition
2018-08-01 13:24:29, Info MBR2GPT: Conversion failed