ブート順序は自動的に変更されます

Question

Ubuntu 16.04とWindowsを実行しているデュアルブートラップトップがあります。私のブートローダーはGRUBで、GUID Partition Table（GPT）があり、OSはUEFIを使用してインストールされます。デフォルトのブート順序は次のとおりです。

GRUBで起動するUbuntu
ウィンドウズブートマネージャー

デフォルトでは、GRUBで起動し、UbuntuとWindowsを選択します。

私の問題は、ラップトップの起動または再起動中にUSBストレージメディアを接続すると、起動順序が変わり、Windowsブートマネージャーが最初に起動してWindowsを直接起動することです。

システムインフォメーション（dmidecode -q）：

BIOS Information Vendor: LENOVO Version: B0CN97WW Release Date: 01/08/2016 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 6144 kB Characteristics: PCI is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported Japanese floppy for NEC 9800 1.2 MB is supported (int 13h) Japanese floppy for Toshiba 1.2 MB is supported (int 13h) 5.25"/360 kB floppy services are supported (int 13h) 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) 8042 keyboard services are supported (int 9h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported BIOS boot specification is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 1.97 Firmware Revision: 1.97 System Information Manufacturer: LENOVO Product Name: 80E5 Version: Lenovo G50-80 Serial Number: XXXXXXXX UUID: 284A4633-XXXX-XXXX-XXXX-XXXXXXXXXXXX Wake-up Type: Power Switch SKU Number: LENOVO_MT_80E5_BU_idea_FM_Lenovo G50-80 Family: IDEAPAD Base Board Information Manufacturer: LENOVO Product Name: Lenovo G50-80 Version: 31900058 WIN Serial Number: XXXXXXXX Asset Tag: NO Asset Tag Features: Board is a hosting board Board is replaceable Location In Chassis: Type2 - Board Chassis Location Type: Motherboard Chassis Information Manufacturer: LENOVO Type: Notebook Lock: Not Present Version: Lenovo G50-80 Serial Number: XXXXXXXX Asset Tag: NO Asset Tag Boot-up State: Safe Power Supply State: Safe Thermal State: Safe Security Status: None OEM Information: 0x00000000 Height: Unspecified Number Of Power Cords: 1 Contained Elements: 0 SKU Number: SKU Number Processor Information Socket Designation: U3E1 Type: Central Processor Family: Core i5 Manufacturer: Intel(R) Corporation ID: D4 06 03 00 FF FB EB BF Signature: Type 0, Family 6, Model 61, Stepping 4 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) CMOV (Conditional move instruction supported) PAT (Page attribute table) PSE-36 (36-bit page size extension) CLFSH (CLFLUSH instruction supported) DS (Debug store) ACPI (ACPI supported) MMX (MMX technology supported) FXSR (FXSAVE and FXSTOR instructions supported) SSE (Streaming SIMD extensions) SSE2 (Streaming SIMD extensions 2) SS (Self-snoop) HTT (Multi-threading) TM (Thermal monitor supported) PBE (Pending break enabled) Version: Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz Voltage: 0.9 V External Clock: 100 MHz Max Speed: 2700 MHz Current Speed: 2200 MHz Status: Populated, Enabled Upgrade: Socket BGA1168 Serial Number: To Be Filled By O.E.M. Asset Tag: To Be Filled By O.E.M. Part Number: To Be Filled By O.E.M. Core Count: 2 Core Enabled: 2 Thread Count: 4 Characteristics: 64-bit capable Multi-Core Hardware Thread Execute Protection Enhanced Virtualization Power/Performance Control Cache Information Socket Designation: L1 Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 32 kB Maximum Size: 32 kB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Parity System Type: Data Associativity: 8-way Set-associative Cache Information Socket Designation: L1 Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 32 kB Maximum Size: 32 kB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Parity System Type: Instruction Associativity: 8-way Set-associative Cache Information Socket Designation: L2 Cache Configuration: Enabled, Not Socketed, Level 2 Operational Mode: Write Back Location: Internal Installed Size: 256 kB Maximum Size: 256 kB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Unified Associativity: 8-way Set-associative Cache Information Socket Designation: L3 Cache Configuration: Enabled, Not Socketed, Level 3 Operational Mode: Write Back Location: Internal Installed Size: 3072 kB Maximum Size: 3072 kB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 12-way Set-associative Port Connector Information Internal Reference Designator: J1A1 Internal Connector Type: None External Reference Designator: Keyboard External Connector Type: PS/2 Port Type: Keyboard Port Port Connector Information Internal Reference Designator: J1A1 Internal Connector Type: None External Reference Designator: Mouse External Connector Type: PS/2 Port Type: Mouse Port Port Connector Information Internal Reference Designator: J2A1 Internal Connector Type: None External Reference Designator: TV OUT External Connector Type: Mini DIN Port Type: Video Port Port Connector Information Internal Reference Designator: J2A2 Internal Connector Type: None External Reference Designator: CRT External Connector Type: DB-15 female Port Type: Video Port Port Connector Information Internal Reference Designator: J2A2 Internal Connector Type: None External Reference Designator: COM 1 External Connector Type: DB-9 male Port Type: Serial Port 16550A Compatible Port Connector Information Internal Reference Designator: J3A1 Internal Connector Type: None External Reference Designator: USB External Connector Type: Access Bus (USB) Port Type: USB Port Connector Information Internal Reference Designator: J3A1 Internal Connector Type: None External Reference Designator: USB External Connector Type: Access Bus (USB) Port Type: USB Port Connector Information Internal Reference Designator: J3A1 Internal Connector Type: None External Reference Designator: USB External Connector Type: Access Bus (USB) Port Type: USB Port Connector Information Internal Reference Designator: J5A1 Internal Connector Type: None External Reference Designator: USB External Connector Type: Access Bus (USB) Port Type: USB Port Connector Information Internal Reference Designator: J5A1 Internal Connector Type: None External Reference Designator: USB External Connector Type: Access Bus (USB) Port Type: USB Port Connector Information Internal Reference Designator: J5A2 Internal Connector Type: None External Reference Designator: USB External Connector Type: Access Bus (USB) Port Type: USB Port Connector Information Internal Reference Designator: J5A1 Internal Connector Type: None External Reference Designator: Network External Connector Type: RJ-45 Port Type: Network Port Port Connector Information Internal Reference Designator: J9G2 Internal Connector Type: On Board Floppy External Reference Designator: OnBoard Floppy Type External Connector Type: None Port Type: Other Port Connector Information Internal Reference Designator: J7J1 Internal Connector Type: On Board IDE External Reference Designator: OnBoard Primary IDE External Connector Type: None Port Type: Other Port Connector Information Internal Reference Designator: J30 Internal Connector Type: None External Reference Designator: Microphone In External Connector Type: Mini Jack (headphones) Port Type: Audio Port Port Connector Information Internal Reference Designator: J30 Internal Connector Type: None External Reference Designator: Line In External Connector Type: Mini Jack (headphones) Port Type: Audio Port Port Connector Information Internal Reference Designator: J30 Internal Connector Type: None External Reference Designator: Speaker Out External Connector Type: Mini Jack (headphones) Port Type: Audio Port System Slot Information Designation: J6C1 Type: x1 PCI Express x1 Current Usage: Available Length: Other ID: 1 Characteristics: PME signal is supported Hot-plug devices are supported Bus Address: 0000:00:1c.0 System Slot Information Designation: J6D2 Type: x1 PCI Express x1 Current Usage: Available Length: Other ID: 2 Characteristics: PME signal is supported Hot-plug devices are supported Bus Address: 0000:00:1c.1 System Slot Information Designation: J7C1 Type: x1 PCI Express x1 Current Usage: In Use Length: Other ID: 3 Characteristics: PME signal is supported Hot-plug devices are supported Bus Address: 0000:00:1c.2 System Slot Information Designation: J7D1 Type: x1 PCI Express x1 Current Usage: In Use Length: Other ID: 4 Characteristics: PME signal is supported Hot-plug devices are supported Bus Address: 0000:00:1c.3 System Slot Information Designation: J8C1 Type: x4 PCI Express x4 Current Usage: Available Length: Other ID: 5 Characteristics: PME signal is supported Hot-plug devices are supported Bus Address: 0000:00:1c.4 OEM Strings String 1: OemString1 String 2: OemString2 String 3: OemString3 System Configuration Options Option 1: ConfigOptions1 Option 2: ConfigOptions2 Option 3: ConfigOptions3 BIOS Language Information Language Description Format: Long Installable Languages: 8 en|US|iso8859-1,0 fr|CA|iso8859-1,0 zh|TW|unicode,0 ja|JP|unicode,0 it|IT|iso8859-1,0 es|ES|iso8859-1,0 de|DE|iso8859-1,0 pt|PT|iso8859-1,0 Currently Installed Language: en|US|iso8859-1,0 Group Associations Name: Firmware Version Info Items: 6 0x003B (<OUT OF SPEC>) 0x003A (<OUT OF SPEC>) 0x0039 (<OUT OF SPEC>) 0x0038 (<OUT OF SPEC>) 0x0037 (<OUT OF SPEC>) 0x0036 (<OUT OF SPEC>) Group Associations Name: Intel(R) Silicon View Technology Items: 1 0x0041 (<OUT OF SPEC>) System Event Log Area Length: 0 bytes Header Start Offset: 0x0000 Header Length: 8192 bytes Data Start Offset: 0x2000 Access Method: General-purpose non-volatile data functions Access Address: 0x0000 Status: Valid, Not Full Change Token: 0x12345678 Header Format: OEM-specific Supported Log Type Descriptors: 3 Descriptor 1: POST memory resize Data Format 1: None Descriptor 2: POST error Data Format 2: POST results bitmap Descriptor 3: Log area reset/cleared Data Format 3: None Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 16 GB Number Of Devices: 2 Memory Device Total Width: 64 bits Data Width: 64 bits Size: 4096 MB Form Factor: SODIMM Set: None Locator: ChannelA-DIMM0 Bank Locator: BANK 0 Type: DDR3 Type Detail: Synchronous Speed: 1600 MHz Manufacturer: Samsung Serial Number: XXXXXXXX Asset Tag: 9876543210 Part Number: M471B5173EB0-YK0 Rank: 1 Configured Clock Speed: 1600 MHz Minimum Voltage: 1.5 V Maximum Voltage: 1.5 V Configured Voltage: Unknown Memory Device Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: ChannelB-DIMM0 Bank Locator: BANK 2 Type: Unknown Type Detail: None Speed: Unknown Manufacturer: Not Specified Serial Number: Not Specified Asset Tag: 9876543210 Part Number: Not Specified Rank: Unknown Configured Clock Speed: Unknown Minimum Voltage: Unknown Maximum Voltage: Unknown Configured Voltage: Unknown Memory Array Mapped Address Starting Address: 0x00000000000 Ending Address: 0x000FFFFFFFF Range Size: 4 GB Partition Width: 2 Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x000FFFFFFFF Range Size: 4 GB Partition Row Position: 254 Interleave Position: 1 Interleaved Data Depth: 1 Built-in Pointing Device Type: Touch Pad Interface: PS/2 Buttons: 4 Portable Battery Location: Fake Manufacturer: -Virtual Battery 0- Manufacture Date: 08/08/2010 Serial Number: Battery 0 Name: CRB Battery 0 Chemistry: Lithium Ion Design Capacity: Unknown Design Voltage: Unknown SBDS Version: Not Specified Maximum Error: Unknown OEM-specific Information: 0x00000000 Hardware Security Power-On Password Status: Disabled Keyboard Password Status: Disabled Administrator Password Status: Disabled Front Panel Reset Status: Disabled Voltage Probe Description: Voltage Probe Description Location: Unknown Status: Unknown Maximum Value: Unknown Minimum Value: Unknown Resolution: Unknown Tolerance: Unknown Accuracy: Unknown OEM-specific Information: 0x00008000 Nominal Value: 0.000 V Cooling Device Type: Fan Status: OK OEM-specific Information: 0x00000000 Nominal Speed: 8192 rpm Description: Cooling Device Description Temperature Probe Description: Temperature Probe Description Location: Unknown Status: Unknown Maximum Value: Unknown Minimum Value: Unknown Resolution: Unknown Tolerance: Unknown Accuracy: Unknown OEM-specific Information: 0x00008000 Nominal Value: 0.0 deg C System Boot Information Status: No errors detected System Power Supply Location: OEM Define 0 Name: OEM Define 1 Manufacturer: OEM Define 2 Serial Number: OEM Define 3 Asset Tag: OEM Define 4 Model Part Number: OEM Define 5 Revision: OEM Define 6 Max Power Capacity: 75 W Status: Not Present Type: Regulator Input Voltage Range Switching: Auto-switch Plugged: No Hot Replaceable: No Onboard Device Reference Designation: IGD Type: Video Status: Disabled Type Instance: 1 Bus Address: 0000:00:02.0

George Mathioudakis · Accepted Answer

Lenovo G-Seriesのラップトップを持っていますが、あなたと同じ問題があります。ご覧のとおり、このラップトップは私のように製造中止になっています。レノボのサポートに連絡しましたが、彼らが言わなければならないことは、これらのラップトップのサポートはもう提供しておらず、できることはそのドキュメントを確認することだけです。ご存知のように、ドキュメンテーションで「ちょっと、バグがあります」と書かれているラップトップを買うことは決してないでしょう。

私自身の研究で、バグはBIOS/UEFIファームウェア関連であり、Windowsとは関係がないことに気付きました。ラップトップは製造中止になったため、修正されることはないと思います。外部USB大容量記憶媒体を検出すると、正しいブート順序に追加しようとし、インストールされているオペレーティングシステムのブート順序を台無しにします。

しかし、心配しないでください！ Rod Smith の投稿には、 this リンクが表示されます。これは、問題を解決する良い方法です。私は私のラップトップに似た何かをしました。

Rod Smith · Answer

この質問は完全に重複しているわけではありませんが、次の質問は関連しており、回答が含まれている可能性があります。

ブートクーデターのページこのページは私のrEFIndドキュメントの一部ですが、原則はすべてのブートローダーに適用されます。ファイル名の変更など。

USBドライブへの接続に応じてファームウェアが起動順序をWindowsに切り替えている場合、ファームウェアのバグのように聞こえます。そのため、ファームウェアの更新により問題が解決する場合があります。または、製造元にバグを報告する必要があるかもしれません（そしておそらく修正を見ることはないでしょう。製造業者はその種のバグを修正するのが悪いです）。