SdFat hot-plug fails on GIGA R1

[SAMRUTK]

After removing and re-inserting an SD card, SDFS.begin() succeeds but subsequent calls to myFile.open() fail. Please see the below code...
#include <SdFat.h>
#include <SPI.h>

// --- Pin Definitions for GIGA R1 ---
#define SD_CS_PIN 10
#define ERROR_LED_IOPIN 46 // The red D7 LED on the GIGA
#define RELAY_ON LOW
#define RELAY_OFF HIGH

// --- Global Objects ---
SdFat SDFS;

// --- Helper function to control the LED ---
void ERROR_LED_SET(bool on) {
digitalWrite(ERROR_LED_IOPIN, on ? RELAY_ON : RELAY_OFF);
}

/**

• @brief Checks for the SD card using SdFat and resets the SPI bus if needed.
  */
  bool ensureSdReady() {
  if (SDFS.card() && SDFS.card()->type() != 0) {
  ERROR_LED_SET(false);
  return true;
  }

  Serial.println("Card not ready. Forcing full library and SPI re-initialization...");

  SDFS.end();
  ::SPI.end();
  ::SPI.begin();

  SdSpiConfig spiConfig(SD_CS_PIN, DEDICATED_SPI, SD_SCK_MHZ(10));
  if (SDFS.begin(spiConfig)) {
  SDFS.chvol();
  Serial.println("-> SD Card Initialization successful!");
  ERROR_LED_SET(false);
  return true;
  }

  Serial.println("-> SD Card Initialization failed.");
  ERROR_LED_SET(true);
  return false;
  }

/**

• @brief Attempts to write one line of data to the log file.
  /
  void logData() {
  FsFile myFile;
  const char filename = "hotplug_test.txt";
  char data_buf[50];

  if (!ensureSdReady()) {
  Serial.println("Log failed: SD card not ready.");
  return;
  }

  if (!myFile.open(filename, O_WRONLY | O_CREAT | O_APPEND)) {
  Serial.println("Log failed: Could not open file.");
  ERROR_LED_SET(true);
  return;
  }

  sprintf(data_buf, "Logging at %lu ms\r\n", millis());
  if (myFile.write(data_buf, strlen(data_buf)) <= 0) {
  Serial.println("Log failed: Write error.");
  ERROR_LED_SET(true);
  myFile.close();
  return;
  }

  myFile.close();
  ERROR_LED_SET(false);
  Serial.print("Success: Wrote to ");
  Serial.println(filename);
  }

void setup() {
Serial.begin(115200);
while (!Serial);
Serial.println("\n--- GIGA R1 SdFat Hot-Plug Test ---");

pinMode(ERROR_LED_IOPIN, OUTPUT);
ERROR_LED_SET(false); // Start with LED off
}

void loop() {
logData();
delay(2000);
}