我正在尝试使用 MBR2GPT 将 MBR/BIOS 磁盘转换为 GPT/UEFI。我收到错误“无法找到磁盘 4 的 OS 分区”。我在 setupact.log 中发现此信息：
2022-12-07 15:38:24, Info MBR2GPT was explicitly asked to run in full OS mode.
2022-12-07 15:38:24, Info MBR2GPT: Attempting to validate disk 4
2022-12-07 15:38:24, Info MBR2GPT: Retrieving layout of disk
2022-12-07 15:38:24, Info MBR2GPT: Initial partition information
2022-12-07 15:38:24, Info ===========================================================
2022-12-07 15:38:24, Info Partition layout for disk: 4
2022-12-07 15:38:24, Info Partition style : MBR
2022-12-07 15:38:24, Info MBR signature: 2079525136
2022-12-07 15:38:24, Info Number of partitions : 2
2022-12-07 15:38:24, Info ===================PARTITION===============================
2022-12-07 15:38:24, Info Number: 1
2022-12-07 15:38:24, Info Type: 7
2022-12-07 15:38:24, Info Boot: Yes
2022-12-07 15:38:24, Info Recognized: Yes
2022-12-07 15:38:24, Info Style: 0
2022-12-07 15:38:24, Info Offset: 1048576
2022-12-07 15:38:24, Info Length: 268435456000
2022-12-07 15:38:24, Info Volume: \\?\Volume{7bf30910-0000-0000-0000-100000000000}\
2022-12-07 15:38:24, Info Drive: C:\
2022-12-07 15:38:24, Info NT Path: \Device\HardDisk4\Partition1
2022-12-07 15:38:24, Info ===================PARTITION===============================
2022-12-07 15:38:24, Info Number: 2
2022-12-07 15:38:24, Info Type: 7
2022-12-07 15:38:24, Info Boot: No
2022-12-07 15:38:24, Info Recognized: Yes
2022-12-07 15:38:24, Info Style: 0
2022-12-07 15:38:24, Info Offset: 268436504576
2022-12-07 15:38:24, Info Length: 209715200
2022-12-07 15:38:24, Info Volume: \\?\Volume{7bf30910-0000-0000-0000-10803e000000}\
2022-12-07 15:38:24, Info Drive: X:\
2022-12-07 15:38:24, Info NT Path: \Device\HardDisk4\Partition2
2022-12-07 15:38:24, Info ===========================================================
2022-12-07 15:38:24, Info ESP partition size will be 104857600
2022-12-07 15:38:24, Info MBR2GPT: Validating layout, disk sector size is: 512 bytes
2022-12-07 15:38:24, Info BCD: Opening store. Flags: 0x0
2022-12-07 15:38:24, Info BCD: Store path: "\??\GLOBALROOT\device\harddisk4\partition1\Boot\BCD"
2022-12-07 15:38:24, Info BCD: Failed to load hive into key BCD00000000 from \??\GLOBALROOT\device\harddisk4\partition1\Boot\BCD. Status: c000000f
2022-12-07 15:38:24, Info BCD: BcdOpenStore: Failed to add store from file \??\GLOBALROOT\device\harddisk4\partition1\Boot\BCD. StoreFlags: 0x0 Status: c000000f
2022-12-07 15:38:24, Error FindOSPartitions: Cannot open BCD for boot volume. Error: 0xC000000F
2022-12-07 15:38:24, Error Cannot find OS partition(s) for disk 4
我正在运行的命令：
C:\Windows\system32>mbr2gpt /validate /allowFullOS /disk:4
MBR2GPT: Attempting to validate disk 4
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes
Cannot find OS partition(s) for disk 4
bcdedit（以管理员身份）：
C:\Windows\system32>bcdedit
Windows Boot Manager
--------------------
identifier {bootmgr}
device partition=G:
description Windows Boot Manager
locale en-US
inherit {globalsettings}
default {current}
resumeobject {069b9e52-330a-11ed-9d60-fc82c62dfcb6}
displayorder {current}
toolsdisplayorder {memdiag}
timeout 30
Windows Boot Loader
-------------------
identifier {current}
device partition=C:
path \Windows\system32\winload.exe
description Windows 10
locale en-US
inherit {bootloadersettings}
recoverysequence {069b9e54-330a-11ed-9d60-fc82c62dfcb6}
displaymessageoverride Recovery
recoveryenabled Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \Windows
resumeobject {069b9e52-330a-11ed-9d60-fc82c62dfcb6}
nx OptIn
bootmenupolicy Standard
答案1
对于有同样问题的人，我的解决方案是使用命令bcdboot C:\Windows /s Y: /f ALL
在哪里C：是您的操作系统位置是：是启动分区的指定卷号。通常是 Bios/Legacy 架构中的系统保留分区。我建议先创建备份，以防万一出现问题。
当使用 mbr2gpt 时，我遇到了确切的错误消息“无法打开启动卷的 BCD”，上述命令解决了我的问题。
此命令复制支持在基于 UEFI 或基于 BIOS 的计算机上启动的 BCD 文件。
如果您无法从磁盘管理中为系统保留分区分配字母，则可以从 Diskpart 中分配。在提升的命令提示符下运行Diskpart
例如，如果系统保留是磁盘 1 中的分区 2，我会执行以下操作：
DISKPART > sel disk 1
DISKPART > sel part 2
DISKPART > assign letter=Y
退出并尝试再次运行 mbr2gpt。