diff --git a/source/fs/fsdrive.c b/source/fs/fsdrive.c
index cc06e7b..b8c2d7e 100644
--- a/source/fs/fsdrive.c
+++ b/source/fs/fsdrive.c
@@ -194,7 +194,8 @@ uint64_t GetFreeSpace(const char* path)
 uint64_t GetTotalSpace(const char* path)
 {
     FATFS* fsobj = GetMountedFSObject(path);
-    return (fsobj) ? ((uint64_t) (fsobj->n_fatent - 2) * fsobj->csize * _MAX_SS) : 0;
+    return (fsobj) ? ((uint64_t) (fsobj->n_fatent - 2) * fsobj->csize * _MAX_SS) :
+        GetVirtualDriveSize(path);
 }
 
 uint64_t GetPartitionOffsetSector(const char* path)
diff --git a/source/virtual/vcart.c b/source/virtual/vcart.c
index 1a7f814..de5baff 100644
--- a/source/virtual/vcart.c
+++ b/source/virtual/vcart.c
@@ -44,3 +44,7 @@ int ReadVCartFile(const VirtualFile* vfile, u8* buffer, u32 offset, u32 count) {
         return ReadCartPrivateHeader(buffer, offset, count, cdata);
     else return ReadCartBytes(buffer, offset, count, cdata);
 }
+
+u64 GetVCartDriveSize(void) {
+    return cart_init ? cdata->cart_size : 0;
+}
diff --git a/source/virtual/vcart.h b/source/virtual/vcart.h
index d9a9012..23c5596 100644
--- a/source/virtual/vcart.h
+++ b/source/virtual/vcart.h
@@ -7,3 +7,4 @@ u32 InitVCartDrive(void);
 bool ReadVCartDir(VirtualFile* vfile, VirtualDir* vdir);
 int ReadVCartFile(const VirtualFile* vfile, u8* buffer, u32 offset, u32 count);
 // int WriteVCartFile(const VirtualFile* vfile, const u8* buffer, u32 offset, u32 count); // no writes
+u64 GetVCartDriveSize(void);
diff --git a/source/virtual/vgame.c b/source/virtual/vgame.c
index 2ca20ab..6748087 100644
--- a/source/virtual/vgame.c
+++ b/source/virtual/vgame.c
@@ -743,3 +743,7 @@ bool MatchVGameLv3Filename(const char* name, const VirtualFile* vfile, u32 n_cha
     if (!GetVGameLv3Filename(lv3_name, vfile, 256)) return false;
     return (strncasecmp(name, lv3_name, n_chars) == 0);
 }
+
+u64 GetVGameDriveSize(void) {
+    return (vgame_type) ? GetMountSize() : 0;
+}
diff --git a/source/virtual/vgame.h b/source/virtual/vgame.h
index bc6284f..c1c1e3b 100644
--- a/source/virtual/vgame.h
+++ b/source/virtual/vgame.h
@@ -15,3 +15,5 @@ int ReadVGameFile(const VirtualFile* vfile, u8* buffer, u32 offset, u32 count);
 bool FindVirtualFileInLv3Dir(VirtualFile* vfile, const VirtualDir* vdir, const char* name);
 bool GetVGameLv3Filename(char* name, const VirtualFile* vfile, u32 n_chars);
 bool MatchVGameLv3Filename(const char* name, const VirtualFile* vfile, u32 n_chars);
+
+u64 GetVGameDriveSize(void);
diff --git a/source/virtual/virtual.c b/source/virtual/virtual.c
index ef628bf..daaa7ff 100644
--- a/source/virtual/virtual.c
+++ b/source/virtual/virtual.c
@@ -193,3 +193,14 @@ int WriteVirtualFile(const VirtualFile* vfile, const u8* buffer, u32 offset, u32
     
     return -1;
 }
+
+u64 GetVirtualDriveSize(const char* path) {
+    u32 virtual_src = GetVirtualSource(path);
+    if (virtual_src & (VRT_SYSNAND|VRT_EMUNAND|VRT_IMGNAND))
+        return GetVNandDriveSize(virtual_src);
+    else if (virtual_src & VRT_GAME)
+        return GetVGameDriveSize();
+    else if (virtual_src & VRT_CART)
+        return GetVCartDriveSize();
+    return 0;
+}
diff --git a/source/virtual/virtual.h b/source/virtual/virtual.h
index c2924cf..1ea52f8 100644
--- a/source/virtual/virtual.h
+++ b/source/virtual/virtual.h
@@ -59,3 +59,5 @@ bool GetVirtualFilename(char* name, const VirtualFile* vfile, u32 n_chars);
 
 int ReadVirtualFile(const VirtualFile* vfile, u8* buffer, u32 offset, u32 count, u32* bytes_read);
 int WriteVirtualFile(const VirtualFile* vfile, const u8* buffer, u32 offset, u32 count, u32* bytes_written);
+
+u64 GetVirtualDriveSize(const char* path);
diff --git a/source/virtual/vnand.c b/source/virtual/vnand.c
index 8c3a8e4..5af88e3 100644
--- a/source/virtual/vnand.c
+++ b/source/virtual/vnand.c
@@ -97,3 +97,7 @@ int WriteVNandFile(const VirtualFile* vfile, const u8* buffer, u32 offset, u32 c
     if ((res == 0) && (vfile->flags & VFLAG_GBA_VC)) res = FixAgbSaveCmac(nand_dst);
     return res;
 }
+
+u64 GetVNandDriveSize(u32 nand_src) {
+    return GetNandSizeSectors(nand_src) * 0x200;
+}
diff --git a/source/virtual/vnand.h b/source/virtual/vnand.h
index 02ca6dd..ae2ac44 100644
--- a/source/virtual/vnand.h
+++ b/source/virtual/vnand.h
@@ -7,3 +7,4 @@ bool CheckVNandDrive(u32 nand_src);
 bool ReadVNandDir(VirtualFile* vfile, VirtualDir* vdir);
 int ReadVNandFile(const VirtualFile* vfile, u8* buffer, u32 offset, u32 count);
 int WriteVNandFile(const VirtualFile* vfile, const u8* buffer, u32 offset, u32 count);
+u64 GetVNandDriveSize(u32 nand_src);