1 files changed, 5 insertions, 3 deletions

diff --git a/firmware/export/disk.h b/firmware/export/disk.h
index e465552fdc..4f11438b1b 100644
--- a/firmware/export/disk.h
+++ b/firmware/export/disk.h
@@ -26,8 +26,8 @@
 
 struct partinfo
 {
-    unsigned long start; /* first sector (LBA) */
-    unsigned long size;  /* number of sectors */
+    sector_t start; /* first sector (LBA) */
+    sector_t size;  /* number of sectors */
     unsigned char type;
 };
 
@@ -47,10 +47,12 @@ int disk_mount(int drive);
 int disk_unmount_all(void);
 int disk_unmount(int drive);
 
-/* The number of 512-byte sectors in a "logical" sector. Needed for ipod 5.5G */
+/* Used when the drive's logical sector size is smaller than the sector size used by the partition table and filesystem.  Notably needed for ipod 5.5G/6G. */
 #ifdef MAX_LOG_SECTOR_SIZE
 int disk_get_sector_multiplier(IF_MD_NONVOID(int drive));
 #endif
+/* The size of the drive's smallest addressible unit */
+int disk_get_log_sector_size(IF_MD_NONVOID(int drive));
 
 bool disk_present(IF_MD_NONVOID(int drive));