diff --git a/ld/libfiles.ntsc-beta.inc b/ld/libfiles.ntsc-beta.inc
index cf787e83b..052d7bc33 100644
--- a/ld/libfiles.ntsc-beta.inc
+++ b/ld/libfiles.ntsc-beta.inc
@@ -167,7 +167,7 @@
 	build/ROMID/lib/ultra/io/pfsselectbank.o (section); \
 	build/ROMID/lib/ultra/io/pfsfreeblocks.o (section); \
 	build/ROMID/lib/ultra/io/pfsallocatefile.o (section); \
-	build/ROMID/lib/lib_4d480.o (section); \
+	build/ROMID/lib/ultra/io/pfsdeletefile.o (section); \
 	build/ROMID/lib/ultra/io/siacs.o (section); \
 	build/ROMID/lib/ultra/io/pfschecker.o (section); \
 	build/ROMID/lib/lib_4e090.o (section); \
diff --git a/ld/libfiles.ntsc-final.inc b/ld/libfiles.ntsc-final.inc
index 2cc27b285..cf55e24f0 100644
--- a/ld/libfiles.ntsc-final.inc
+++ b/ld/libfiles.ntsc-final.inc
@@ -166,7 +166,7 @@
 	build/ROMID/lib/ultra/io/pfsselectbank.o (section); \
 	build/ROMID/lib/ultra/io/pfsfreeblocks.o (section); \
 	build/ROMID/lib/ultra/io/pfsallocatefile.o (section); \
-	build/ROMID/lib/lib_4d480.o (section); \
+	build/ROMID/lib/ultra/io/pfsdeletefile.o (section); \
 	build/ROMID/lib/ultra/io/pfschecker.o (section); \
 	build/ROMID/lib/lib_4e090.o (section); \
 	build/ROMID/lib/ultra/os/maptlb.o (section); \
diff --git a/ld/libfiles.pal-final.inc b/ld/libfiles.pal-final.inc
index 35551f512..b2c5c5719 100644
--- a/ld/libfiles.pal-final.inc
+++ b/ld/libfiles.pal-final.inc
@@ -165,7 +165,7 @@
 	build/ROMID/lib/ultra/io/pfsselectbank.o (section); \
 	build/ROMID/lib/ultra/io/pfsfreeblocks.o (section); \
 	build/ROMID/lib/ultra/io/pfsallocatefile.o (section); \
-	build/ROMID/lib/lib_4d480.o (section); \
+	build/ROMID/lib/ultra/io/pfsdeletefile.o (section); \
 	build/ROMID/lib/ultra/io/pfschecker.o (section); \
 	build/ROMID/lib/lib_4e090.o (section); \
 	build/ROMID/lib/ultra/os/maptlb.o (section); \
diff --git a/src/game/pak/pak.c b/src/game/pak/pak.c
index 3434b7464..8c11bfe4c 100644
--- a/src/game/pak/pak.c
+++ b/src/game/pak/pak.c
@@ -15,7 +15,6 @@
 #include "lib/main.h"
 #include "lib/memory.h"
 #include "lib/rng.h"
-#include "lib/lib_4d480.h"
 #include "lib/lib_4e090.h"
 #include "lib/lib_4f5e0.h"
 #include "lib/lib_50480.h"
diff --git a/src/include/PR/os_pfs.h b/src/include/PR/os_pfs.h
index 9e557a69b..ff8bc8092 100644
--- a/src/include/PR/os_pfs.h
+++ b/src/include/PR/os_pfs.h
@@ -153,6 +153,7 @@ typedef struct {
 extern s32		osPfsIsPlug(OSMesgQueue *, u8 *);
 s32 osPfsAllocateFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name, s32 num_bytes, s32 *file_no);
 s32 osPfsFindFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name, s32 *file_no);
+s32 osPfsDeleteFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name);
 
 #endif  /* defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS) */
 
diff --git a/src/include/lib/lib_4d480.h b/src/include/lib/lib_4d480.h
deleted file mode 100644
index 1786a70cd..000000000
--- a/src/include/lib/lib_4d480.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef _IN_LIB_LIB_4D480_H
-#define _IN_LIB_LIB_4D480_H
-#include <ultra64.h>
-#include "data.h"
-#include "types.h"
-
-s32 osPfsDeleteFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name);
-s32 __osPfsReleasePages(OSPfs *pfs, __OSInode *inode, u8 initialPage, u8 bank, __OSInodeUnit* final_page);
-
-#endif
diff --git a/src/include/libultra_internal.h b/src/include/libultra_internal.h
index ee65f7b01..6878874d8 100644
--- a/src/include/libultra_internal.h
+++ b/src/include/libultra_internal.h
@@ -67,5 +67,6 @@ s32 __osCheckId(OSPfs *pfs);
 s32 __osPfsRWInode(OSPfs *pfs, __OSInode *inode, u8 flag, u8 bank);
 u8 __osContAddressCrc(u16 inaddr);
 u8 __osContDataCrc(u8 *data);
+s32 __osPfsReleasePages(OSPfs *pfs, __OSInode *inode, u8 initial_page, u8 bank, __OSInodeUnit *final_page);
 
 #endif
diff --git a/src/lib/lib_06550.c b/src/lib/lib_06550.c
index 92488c252..542328cb6 100644
--- a/src/lib/lib_06550.c
+++ b/src/lib/lib_06550.c
@@ -4,7 +4,6 @@
 #include "bss.h"
 #include "lib/lib_06550.h"
 #include "lib/lib_4b170.h"
-#include "lib/lib_4d480.h"
 #include "lib/lib_4e090.h"
 #include "data.h"
 #include "types.h"
diff --git a/src/lib/lib_4d480.c b/src/lib/lib_4d480.c
deleted file mode 100644
index 4a7614f4a..000000000
--- a/src/lib/lib_4d480.c
+++ /dev/null
@@ -1,110 +0,0 @@
-#include <ultra64.h>
-#include "libultra_internal.h"
-#include "constants.h"
-#include "bss.h"
-#include "lib/libc/ll.h"
-#include "lib/lib_4d480.h"
-#include "data.h"
-#include "types.h"
-
-s32 osPfsDeleteFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name)
-{
-	s32 file_no;
-	s32 ret;
-	__OSInode inode;
-	__OSDir dir;
-	__OSInodeUnit last_page;
-	u8 startpage;
-	u8 bank;
-
-	if (company_code == 0 || game_code == 0) {
-		return PFS_ERR_INVALID;
-	}
-
-	if ((ret = osPfsFindFile(pfs, company_code, game_code, game_name, ext_name, &file_no)) != 0) {
-		return ret;
-	}
-
-	if (pfs->activebank != 0 && (ret = __osPfsSelectBank(pfs, 0)) != 0) {
-		return ret;
-	}
-
-	if ((ret = __osContRamRead(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*)&dir)) != 0) {
-		return ret;
-	}
-
-	startpage = dir.start_page.inode_t.page;
-
-	for (bank = dir.start_page.inode_t.bank; bank < pfs->banks;) {
-		if ((ret = __osPfsRWInode(pfs, &inode, PFS_READ, bank)) != 0) {
-			return ret;
-		}
-
-		if ((ret = __osPfsReleasePages(pfs, &inode, startpage, bank, &last_page)) != 0) {
-			return ret;
-		}
-
-		if ((ret = __osPfsRWInode(pfs, &inode, PFS_WRITE, bank)) != 0) {
-			return ret;
-		}
-
-		if (last_page.ipage == 1) {
-			break;
-		}
-
-		bank = last_page.inode_t.bank;
-		startpage = last_page.inode_t.page;
-	}
-
-	if (bank >= pfs->banks) {
-		return PFS_ERR_INCONSISTENT;
-	}
-
-	bzero(&dir, sizeof(__OSDir));
-
-	ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*)&dir, 0);
-
-	return ret;
-}
-
-GLOBAL_ASM(
-glabel __osPfsReleasePages
-/*    4d658:	27bdfff0 */ 	addiu	$sp,$sp,-16
-/*    4d65c:	30e200ff */ 	andi	$v0,$a3,0xff
-/*    4d660:	30ce00ff */ 	andi	$t6,$a2,0xff
-/*    4d664:	0002c200 */ 	sll	$t8,$v0,0x8
-/*    4d668:	afa60018 */ 	sw	$a2,0x18($sp)
-/*    4d66c:	afa7001c */ 	sw	$a3,0x1c($sp)
-/*    4d670:	030ec821 */ 	addu	$t9,$t8,$t6
-/*    4d674:	a7b9000c */ 	sh	$t9,0xc($sp)
-/*    4d678:	24070003 */ 	addiu	$a3,$zero,0x3
-/*    4d67c:	27a6000c */ 	addiu	$a2,$sp,0xc
-/*    4d680:	27a30008 */ 	addiu	$v1,$sp,0x8
-/*    4d684:	94c10000 */ 	lhu	$at,0x0($a2)
-.L0004d688:
-/*    4d688:	a4610000 */ 	sh	$at,0x0($v1)
-/*    4d68c:	93ab000d */ 	lbu	$t3,0xd($sp)
-/*    4d690:	000b6040 */ 	sll	$t4,$t3,0x1
-/*    4d694:	00ac6821 */ 	addu	$t5,$a1,$t4
-/*    4d698:	95a10000 */ 	lhu	$at,0x0($t5)
-/*    4d69c:	a4c10000 */ 	sh	$at,0x0($a2)
-/*    4d6a0:	93b90009 */ 	lbu	$t9,0x9($sp)
-/*    4d6a4:	00194840 */ 	sll	$t1,$t9,0x1
-/*    4d6a8:	00a94021 */ 	addu	$t0,$a1,$t1
-/*    4d6ac:	a5070000 */ 	sh	$a3,0x0($t0)
-/*    4d6b0:	8c8b0060 */ 	lw	$t3,0x60($a0)
-/*    4d6b4:	97aa000c */ 	lhu	$t2,0xc($sp)
-/*    4d6b8:	93ac000c */ 	lbu	$t4,0xc($sp)
-/*    4d6bc:	014b082a */ 	slt	$at,$t2,$t3
-/*    4d6c0:	54200004 */ 	bnezl	$at,.L0004d6d4
-/*    4d6c4:	8faf0020 */ 	lw	$t7,0x20($sp)
-/*    4d6c8:	504cffef */ 	beql	$v0,$t4,.L0004d688
-/*    4d6cc:	94c10000 */ 	lhu	$at,0x0($a2)
-/*    4d6d0:	8faf0020 */ 	lw	$t7,0x20($sp)
-.L0004d6d4:
-/*    4d6d4:	94c10000 */ 	lhu	$at,0x0($a2)
-/*    4d6d8:	27bd0010 */ 	addiu	$sp,$sp,0x10
-/*    4d6dc:	00001025 */ 	or	$v0,$zero,$zero
-/*    4d6e0:	03e00008 */ 	jr	$ra
-/*    4d6e4:	a5e10000 */ 	sh	$at,0x0($t7)
-);
diff --git a/src/lib/ultra/io/pfsdeletefile.c b/src/lib/ultra/io/pfsdeletefile.c
new file mode 100644
index 000000000..11be40ff4
--- /dev/null
+++ b/src/lib/ultra/io/pfsdeletefile.c
@@ -0,0 +1,86 @@
+#include <ultra64.h>
+#include "libultra_internal.h"
+#include "constants.h"
+#include "bss.h"
+#include "lib/libc/ll.h"
+#include "data.h"
+#include "types.h"
+
+s32 osPfsDeleteFile(OSPfs *pfs, u16 company_code, u32 game_code, char *game_name, char *ext_name)
+{
+	s32 file_no;
+	s32 ret;
+	__OSInode inode;
+	__OSDir dir;
+	__OSInodeUnit last_page;
+	u8 startpage;
+	u8 bank;
+
+	if (company_code == 0 || game_code == 0) {
+		return PFS_ERR_INVALID;
+	}
+
+	if ((ret = osPfsFindFile(pfs, company_code, game_code, game_name, ext_name, &file_no)) != 0) {
+		return ret;
+	}
+
+	if (pfs->activebank != 0 && (ret = __osPfsSelectBank(pfs, 0)) != 0) {
+		return ret;
+	}
+
+	if ((ret = __osContRamRead(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*)&dir)) != 0) {
+		return ret;
+	}
+
+	startpage = dir.start_page.inode_t.page;
+
+	for (bank = dir.start_page.inode_t.bank; bank < pfs->banks;) {
+		if ((ret = __osPfsRWInode(pfs, &inode, PFS_READ, bank)) != 0) {
+			return ret;
+		}
+
+		if ((ret = __osPfsReleasePages(pfs, &inode, startpage, bank, &last_page)) != 0) {
+			return ret;
+		}
+
+		if ((ret = __osPfsRWInode(pfs, &inode, PFS_WRITE, bank)) != 0) {
+			return ret;
+		}
+
+		if (last_page.ipage == 1) {
+			break;
+		}
+
+		bank = last_page.inode_t.bank;
+		startpage = last_page.inode_t.page;
+	}
+
+	if (bank >= pfs->banks) {
+		return PFS_ERR_INCONSISTENT;
+	}
+
+	bzero(&dir, sizeof(__OSDir));
+
+	ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*)&dir, 0);
+
+	return ret;
+}
+
+s32 __osPfsReleasePages(OSPfs *pfs, __OSInode *inode, u8 initial_page, u8 bank, __OSInodeUnit *final_page)
+{
+	__OSInodeUnit next;
+	__OSInodeUnit prev;
+	s32 ret = 0;
+
+	next.ipage = (u16)((bank << 8) + initial_page);
+
+	do {
+		prev = next;
+		next = inode->inode_page[next.inode_t.page];
+		inode->inode_page[prev.inode_t.page].ipage = PFS_PAGE_NOT_USED;
+	} while (next.ipage >= pfs->inode_start_page && next.inode_t.bank == bank);
+
+	*final_page = next;
+
+	return ret;
+}