diff --git a/xorriso/disk_ops.c b/xorriso/disk_ops.c
index f9fed8d1..3ef131f2 100644
--- a/xorriso/disk_ops.c
+++ b/xorriso/disk_ops.c
@@ -1843,11 +1843,11 @@ int Xorriso_afile_fopen(struct XorrisO *xorriso,
                bit3= do not care for device filetype
 */
 int Xorriso_make_mount_cmd(struct XorrisO *xorriso, char *cmd,
-                           int lba, int track, int session, char *volid,
+                           off_t lba, int track, int session, char *volid,
                            char *devadr, char result[SfileadrL], int flag)
 {
  int ret, reg_file= 0, is_safe= 0, sys_code= 0;
- char *form= NULL, session_text[12], track_text[12], lba_text[12];
+ char *form= NULL, session_text[12], track_text[12], lba_text[24];
  char *vars[5][2], *sfe= NULL, *volid_sfe= NULL, *cpt, *sysname;
  char *cooked_dev= NULL, *eff_dev;
  struct stat stbuf;
@@ -1951,7 +1951,7 @@ int Xorriso_make_mount_cmd(struct XorrisO *xorriso, char *cmd,
  }
  sprintf(session_text, "%d", session);
  sprintf(track_text, "%d", track);
- sprintf(lba_text, "%d", lba);
+ sprintf(lba_text, "%.f", (double) lba);
  vars[0][0]= "sbsector";
  vars[0][1]= lba_text;
  vars[1][0]= "track";
diff --git a/xorriso/disk_ops.h b/xorriso/disk_ops.h
index b7244d8b..e3e967ba 100644
--- a/xorriso/disk_ops.h
+++ b/xorriso/disk_ops.h
@@ -118,7 +118,7 @@ int Xorriso_afile_fopen(struct XorrisO *xorriso,
                         char *filename, char *mode, FILE **ret_fp, int flag);
 
 int Xorriso_make_mount_cmd(struct XorrisO *xorriso, char *cmd,
-                           int lba, int track, int session, char *volid,
+                           off_t lba, int track, int session, char *volid,
                            char *devadr, char result[SfileadrL], int flag);
 
 int Xorriso_append_scdbackup_record(struct XorrisO *xorriso, int flag);
diff --git a/xorriso/iso_img.c b/xorriso/iso_img.c
index 303497e3..02470d77 100644
--- a/xorriso/iso_img.c
+++ b/xorriso/iso_img.c
@@ -1051,8 +1051,9 @@ int Xorriso_set_change_pending(struct XorrisO *xorriso, int flag)
 int Xorriso_mount(struct XorrisO *xorriso, char *dev, int adr_mode,
                   char *adr_value, char *cmd, int flag)
 {
- int ret, lba, track, session, params_flag= 0, is_safe= 0, is_extra_drive= 0;
+ int ret, track, session, params_flag= 0, is_safe= 0, is_extra_drive= 0;
  int give_up= 0, mount_chardev= 0, status, aquire_flag= 0;
+ off_t lba;
  char volid[33], *devadr, *mount_command= NULL, *adr_data= NULL, *adr_pt;
  char *dev_path, *libburn_adr= NULL;
  char *dpt, *sysname= "";
@@ -1159,8 +1160,8 @@ int Xorriso_mount(struct XorrisO *xorriso, char *dev, int adr_mode,
      adr_pt= adr_data;
    }
  }
- ret= isoburn_get_mount_params(drive, adr_mode, adr_pt, &lba, &track,
-                               &session, volid, params_flag);
+ ret= isoburn_get_mount_params_v2(drive, adr_mode, adr_pt, &lba, &track,
+                                  &session, volid, params_flag);
  Xorriso_process_msg_queues(xorriso,0);
  if(ret <= 0)
    goto ex;
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 55c643b5..725617ca 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2024.03.18.201822"
+#define Xorriso_timestamP "2024.03.18.204021"