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Support creating boot entry with bcdedit

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This commit is contained in:
Lauri Kenttä
2023-09-09 17:21:11 +03:00
parent f2185f624d
commit d6da4b7cee
2 changed files with 78 additions and 4 deletions
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2
README.md
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@@ -30,6 +30,8 @@ When booting on a UEFI-based computer, Windows may show a vendor-defined logo wh
* `install` – copy the files but don't enable.
* `enable-entry` – create a new EFI boot entry.
* `disable-entry` – disable the EFI boot entry.
* `enable-bcdedit` – use `bcdedit` to create a new EFI boot entry.
* `disable-bootmgr` – use `bcdedit` to disable the EFI boot entry.
* `enable-overwrite` – overwrite the MS boot loader.
* `disable-overwrite` – restore the MS boot loader.
* `allow-secure-boot` – ignore Secure Boot in subsequent commands.

80
src/Setup.cs
View File

@@ -8,6 +8,7 @@ using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Security.Principal;
using System.Text.RegularExpressions;
/**
* HackBGRT Setup.
@@ -56,6 +57,7 @@ public class Setup {
"allow-secure-boot",
"allow-bad-loader",
"enable-entry", "disable-entry",
"enable-bcdedit", "disable-bcdedit",
"enable-overwrite", "disable-overwrite",
"disable",
"uninstall",
@@ -326,6 +328,55 @@ public class Setup {
WriteLine($"HackBGRT has been copied to {InstallPath}.");
}
/**
* Enable HackBGRT with bcdedit.
*/
protected void EnableBCDEdit() {
try {
var re = new Regex("[{][0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}[}]");
var guid = re.Match(Execute("bcdedit", "/copy {bootmgr} /d HackBGRT", true)).Value;
Execute("bcdedit", $"/set {guid} device partition={Esp.Location}", true);
Execute("bcdedit", $"/set {guid} path \\EFI\\HackBGRT\\loader.efi", true);
foreach (var arg in new string[] { "locale", "inherit", "default", "resumeobject", "displayorder", "toolsdisplayorder", "timeout" }) {
Execute("bcdedit", $"/deletevalue {guid} {arg}", true);
}
var fwbootmgr = "{fwbootmgr}";
Execute("bcdedit", $"/set {fwbootmgr} displayorder {guid} /addfirst", true);
} catch (Exception e) {
Log($"EnableBCDEdit failed: {e.ToString()}");
throw new SetupException("Failed to enable HackBGRT with BCDEdit!");
}
}
/**
* Disable HackBGRT with bcdedit.
*/
protected void DisableBCDEdit() {
bool found = false, disabled = false;
var fullOutput = Execute("bcdedit", "/enum firmware", true);
if (fullOutput == null) {
return;
}
var re = new Regex("[{][0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}[}]");
var guids = (from Match match in re.Matches(fullOutput) select match.Value).Distinct().ToArray();
foreach (var guid in guids) {
var entry = Execute("bcdedit", $"/enum {guid}", true);
if (entry == null) {
Log($"DisableBCDEdit failed to enum {guid}.");
} else if (entry.IndexOf("HackBGRT") >= 0) {
found = true;
Log($"Disabling HackBGRT entry {guid}.");
if (Execute("bcdedit", $"/delete {guid}", true) == null) {
Log($"DisableBCDEdit failed to delete {guid}.");
}
disabled = true;
}
}
if (found && !disabled) {
throw new SetupException("Failed to disable HackBGRT with BCDEdit!");
}
}
/**
* Enable HackBGRT boot entry.
*/
@@ -441,12 +492,21 @@ public class Setup {
WriteLine();
}
/**
* Disable HackBGRT completely.
*/
protected void Disable() {
RestoreMsLoader();
DisableBCDEdit();
DisableEntry();
WriteLine("HackBGRT has been disabled.");
}
/**
* Uninstall HackBGRT completely.
*/
protected void Uninstall() {
RestoreMsLoader();
DisableEntry();
Disable();
try {
Directory.Delete(InstallPath, true);
WriteLine($"HackBGRT has been removed from {InstallPath}.");
@@ -571,6 +631,11 @@ public class Setup {
WriteLine(" - creates a new EFI boot entry for HackBGRT");
WriteLine(" - sometimes needs to be enabled in firmware settings");
WriteLine(" - should fall back to MS boot loader if HackBGRT fails");
WriteLine(" J = install (alternative)");
WriteLine(" - creates a new EFI boot entry with an alternative method (BCDEdit)");
WriteLine(" - always sets HackBGRT as the first boot option");
WriteLine(" - sometimes shows up as \"Windows Boot Manager\"");
WriteLine(" - should fall back to MS boot loader if HackBGRT fails");
WriteLine(" O = install (legacy)");
WriteLine(" - overwrites the MS boot loader");
WriteLine(" - may require re-install after Windows updates");
@@ -591,6 +656,8 @@ public class Setup {
}
if (k == ConsoleKey.I) {
RunPrivilegedActions(new string[] { "install", "enable-entry" });
} else if (k == ConsoleKey.J) {
RunPrivilegedActions(new string[] { "install", "enable-bcdedit" });
} else if (k == ConsoleKey.O) {
RunPrivilegedActions(new string[] { "install", "enable-overwrite" });
} else if (k == ConsoleKey.F) {
@@ -661,6 +728,12 @@ public class Setup {
verify(() => DisableEntry());
} else if (arg == "disable-entry") {
DisableEntry();
} else if (arg == "enable-bcdedit") {
HandleSecureBoot(allowSecureBoot);
EnableBCDEdit();
verify(() => DisableBCDEdit());
} else if (arg == "disable-bcdedit") {
DisableBCDEdit();
} else if (arg == "enable-overwrite") {
HandleSecureBoot(allowSecureBoot);
OverwriteMsLoader();
@@ -668,8 +741,7 @@ public class Setup {
} else if (arg == "disable-overwrite") {
RestoreMsLoader();
} else if (arg == "disable") {
RestoreMsLoader();
DisableEntry();
Disable();
} else if (arg == "uninstall") {
Uninstall();
} else {