diff --git a/src/kernel/dri/ata_pio/ata_pio.c b/src/kernel/dri/ata_pio/ata_pio.c
index db1b7cb..cf55b51 100644
--- a/src/kernel/dri/ata_pio/ata_pio.c
+++ b/src/kernel/dri/ata_pio/ata_pio.c
@@ -76,7 +76,7 @@
 
 void test_ata_pio()
 {
-	kprintf("Going to ata_pio_read_sectors\n");
+	kprintf(INFO "Going to ata_pio_read_sectors\n");
 
 	ata_pio_read_sectors(test_buffer, 0, 1);
 	print_buffer();
diff --git a/src/kernel/dri/fs/ext2/ext2.c b/src/kernel/dri/fs/ext2/ext2.c
index 31ed7fe..d0dd3bd 100644
--- a/src/kernel/dri/fs/ext2/ext2.c
+++ b/src/kernel/dri/fs/ext2/ext2.c
@@ -16,5 +16,12 @@
 {
 	struct ext2_superblock sb = ext2_read_superblock();
 
-	kprintf("Magic = 0x%x\n", sb.signature);
+	kprintf(INFO "EXT2 magic = 0x%x\n", sb.signature);
 }
+
+bool ext2_valid_filesystem()
+{
+	struct ext2_superblock sb = ext2_read_superblock();
+
+	return sb.signature == EXT2_SIGNATURE;
+}
\ No newline at end of file
diff --git a/src/kernel/dri/ide/ide.c b/src/kernel/dri/ide/ide.c
index 21f2651..0025970 100644
--- a/src/kernel/dri/ide/ide.c
+++ b/src/kernel/dri/ide/ide.c
@@ -16,12 +16,12 @@
 
 void ide_print_device(struct ide_device *dev)
 {
-    kprintf("<ide-device dma=%b>", dev->supports_dma);
+    kprintf(INFO "<ide-device dma=%b>", dev->supports_dma);
 }
 
 void ide_thread(struct ide_thread_data *data)
 {
-    kprintf("IDE driver thread starting: device=0x%x\n", data->dev.device_id);
+    kprintf(DEBUG "IDE driver thread starting: device=0x%x\n", data->dev.device_id);
 
     struct ide_device dev;
 
diff --git a/src/kernel/dri/pci/pci.c b/src/kernel/dri/pci/pci.c
index 6d35edc..4d2d01e 100644
--- a/src/kernel/dri/pci/pci.c
+++ b/src/kernel/dri/pci/pci.c
@@ -67,7 +67,7 @@
 
 void pci_print_devices()
 {
-	kprintf("Enumerating PCI devices:\n");
+	kprintf(INFO "Enumerating PCI devices:\n");
 	for (int bus = 0; bus < 0xff; bus++)
 	{
 		for (int slot = 0; slot < 32; slot++)
@@ -78,7 +78,7 @@
 
 				if (dev.valid)
 				{
-					kprintf("%d %d %d --- d:0x%x --- %d:%d:%d --- %s\n", bus,
+					kprintf(INFO "%d %d %d --- d:0x%x --- %d:%d:%d --- %s\n", bus,
 							slot, func, dev.device_id, dev.class, dev.subclass,
 							dev.prog_if, dev.vendor->name);
 				}
@@ -134,13 +134,13 @@
 
 void pci_print_drivers()
 {
-	kprintf("Enumerating PCI device drivers:\n");
+	kprintf(INFO "Enumerating PCI device drivers:\n");
 	for (int i = 0; i < num_drivers; i++)
 	{
 		for (int j = 0; j < drivers[i].loaded; j++)
 		{
 			struct pci_device_driver d = drivers[i];
-			kprintf("Driver: %s, vendor: %s\n", d.generic_name, d.dev.vendor->name);
+			kprintf(INFO "Driver: %s, vendor: %s\n", d.generic_name, d.dev.vendor->name);
 		}
 	}
 }