diff --git a/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp b/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp
index 0171a3c93b..e82958fbff 100644
--- a/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp
+++ b/Source/Core/Core/ConfigLoaders/IsSettingSaveable.cpp
@@ -105,6 +105,7 @@ bool IsSettingSaveable(const Config::Location& config_location)
       &Config::MAIN_SYNC_ON_SKIP_IDLE.GetLocation(),
       &Config::MAIN_FASTMEM.GetLocation(),
       &Config::MAIN_TIMING_VARIANCE.GetLocation(),
+      &Config::MAIN_WII_SD_CARD.GetLocation(),
 
       // UI.General
 
diff --git a/Source/Core/Core/ConfigManager.cpp b/Source/Core/Core/ConfigManager.cpp
index 04e55612c7..a201a967b8 100644
--- a/Source/Core/Core/ConfigManager.cpp
+++ b/Source/Core/Core/ConfigManager.cpp
@@ -111,7 +111,6 @@ void SConfig::SaveCoreSettings(IniFile& ini)
   {
     core->Set(fmt::format("SIDevice{}", i), m_SIDevice[i]);
   }
-  core->Set("WiiSDCard", m_WiiSDCard);
   core->Set("WiiKeyboard", m_WiiKeyboard);
   core->Set("WiimoteContinuousScanning", m_WiimoteContinuousScanning);
   core->Set("WiimoteEnableSpeaker", m_WiimoteEnableSpeaker);
@@ -143,7 +142,6 @@ void SConfig::LoadCoreSettings(IniFile& ini)
     core->Get(fmt::format("SIDevice{}", i), &m_SIDevice[i],
               (i == 0) ? SerialInterface::SIDEVICE_GC_CONTROLLER : SerialInterface::SIDEVICE_NONE);
   }
-  core->Get("WiiSDCard", &m_WiiSDCard, true);
   core->Get("WiiKeyboard", &m_WiiKeyboard, false);
   core->Get("WiimoteContinuousScanning", &m_WiimoteContinuousScanning, false);
   core->Get("WiimoteEnableSpeaker", &m_WiimoteEnableSpeaker, false);
diff --git a/Source/Core/Core/ConfigManager.h b/Source/Core/Core/ConfigManager.h
index fac71c4020..be4d4fb31a 100644
--- a/Source/Core/Core/ConfigManager.h
+++ b/Source/Core/Core/ConfigManager.h
@@ -50,7 +50,6 @@ struct BootParameters;
 struct SConfig
 {
   // Wii Devices
-  bool m_WiiSDCard;
   bool m_WiiKeyboard;
   bool m_WiimoteContinuousScanning;
   bool m_WiimoteEnableSpeaker;
diff --git a/Source/Core/Core/IOS/SDIO/SDIOSlot0.cpp b/Source/Core/Core/IOS/SDIO/SDIOSlot0.cpp
index 3355996ff9..c6dcab44e5 100644
--- a/Source/Core/Core/IOS/SDIO/SDIOSlot0.cpp
+++ b/Source/Core/Core/IOS/SDIO/SDIOSlot0.cpp
@@ -16,7 +16,6 @@
 #include "Common/SDCardUtil.h"
 #include "Core/Config/MainSettings.h"
 #include "Core/Config/SessionSettings.h"
-#include "Core/ConfigManager.h"
 #include "Core/HW/Memmap.h"
 #include "Core/IOS/IOS.h"
 #include "Core/IOS/VersionInfo.h"
@@ -49,10 +48,10 @@ void SDIOSlot0Device::EventNotify()
 {
   if (!m_event)
     return;
-  // Accessing SConfig variables like this isn't really threadsafe,
-  // but this is how it's done all over the place...
-  if ((SConfig::GetInstance().m_WiiSDCard && m_event->type == EVENT_INSERT) ||
-      (!SConfig::GetInstance().m_WiiSDCard && m_event->type == EVENT_REMOVE))
+
+  const bool sd_card_inserted = Config::Get(Config::MAIN_WII_SD_CARD);
+  if ((sd_card_inserted && m_event->type == EVENT_INSERT) ||
+      (!sd_card_inserted && m_event->type == EVENT_REMOVE))
   {
     m_ios.EnqueueIPCReply(m_event->request, m_event->type);
     m_event.reset();
@@ -440,8 +439,8 @@ IPCReply SDIOSlot0Device::GetStatus(const IOCtlRequest& request)
 
   // Evaluate whether a card is currently inserted (config value).
   // Make sure we don't modify m_status so we don't lose track of whether the card is SDHC.
-  const u32 status =
-      SConfig::GetInstance().m_WiiSDCard ? (m_status | CARD_INSERTED) : CARD_NOT_EXIST;
+  const bool sd_card_inserted = Config::Get(Config::MAIN_WII_SD_CARD);
+  const u32 status = sd_card_inserted ? (m_status | CARD_INSERTED) : CARD_NOT_EXIST;
 
   INFO_LOG_FMT(IOS_SD, "IOCTL_GETSTATUS. Replying that {} card is {}{}",
                (status & CARD_SDHC) ? "SDHC" : "SD",
diff --git a/Source/Core/DolphinQt/Settings.cpp b/Source/Core/DolphinQt/Settings.cpp
index 44bcd581b1..1fb1d27ae9 100644
--- a/Source/Core/DolphinQt/Settings.cpp
+++ b/Source/Core/DolphinQt/Settings.cpp
@@ -696,14 +696,14 @@ void Settings::SetBatchModeEnabled(bool batch)
 
 bool Settings::IsSDCardInserted() const
 {
-  return SConfig::GetInstance().m_WiiSDCard;
+  return Config::Get(Config::MAIN_WII_SD_CARD);
 }
 
 void Settings::SetSDCardInserted(bool inserted)
 {
   if (IsSDCardInserted() != inserted)
   {
-    SConfig::GetInstance().m_WiiSDCard = inserted;
+    Config::SetBaseOrCurrent(Config::MAIN_WII_SD_CARD, inserted);
     emit SDCardInsertionChanged(inserted);
 
     auto* ios = IOS::HLE::GetIOS();