diff --git a/xorriso/findjob.c b/xorriso/findjob.c
index f5297805..adb432d8 100644
--- a/xorriso/findjob.c
+++ b/xorriso/findjob.c
@@ -917,16 +917,39 @@ int Findjob_set_size_filter(struct FindjoB *o, int test_type,
 }
 
 
-int Findjob_set_lba_range(struct FindjoB *o, int start_lba, int count,
+int Findjob_set_off_t_filter(struct FindjoB *o, int test_type,
+                             off_t num1, off_t num2, int flag)
+{
+ struct ExprtesT *t;
+ int ret;
+
+ ret= Findjob_default_and(o, 0);
+ if(ret <= 0)
+   return(ret);
+
+ t= o->cursor->test;
+ t->test_type= test_type;
+ t->arg1= calloc(sizeof(off_t), 1);
+ t->arg2= calloc(sizeof(off_t), 1);
+ if(t->arg1 == NULL || t->arg2 == NULL)
+   return(-1);
+ *((off_t *) t->arg1)= num1;
+ *((off_t *) t->arg2)= num2;
+ return(1);
+}
+
+
+int Findjob_set_lba_range(struct FindjoB *o, off_t start_lba, off_t count,
                           int flag)
 {
- int ret, end_lba;
+ int ret;
+ off_t end_lba;
 
  if(start_lba > 0)
    end_lba= start_lba + count - 1;
  else
    end_lba= start_lba - count + 1;
- ret= Findjob_set_num_filter(o, 4, start_lba, end_lba, 0);
+ ret= Findjob_set_off_t_filter(o, 4, start_lba, end_lba, 0);
  return(ret);
 }
 
diff --git a/xorriso/findjob.h b/xorriso/findjob.h
index eac0a851..fe889a21 100644
--- a/xorriso/findjob.h
+++ b/xorriso/findjob.h
@@ -32,7 +32,7 @@ struct ExprtesT {
    1= -name char *arg1 (regex_t in *arg2)
    2= -type char *arg1
    3= -damaged
-   4= -lba_range int *arg1 int *arg2
+   4= -lba_range off_t *arg1 off_t *arg2
    5= -has_acl
    6= -has_xattr
    7= -has_aaip
@@ -250,7 +250,10 @@ int Findjob_set_num_filter(struct FindjoB *o, int test_type,
 int Findjob_set_size_filter(struct FindjoB *o, int test_type,
                             off_t num1, int num2, int flag);
 
-int Findjob_set_lba_range(struct FindjoB *o, int start_lba, int count, 
+int Findjob_set_off_t_filter(struct FindjoB *o, int test_type,
+                             off_t num1, off_t num2, int flag);
+
+int Findjob_set_lba_range(struct FindjoB *o, off_t start_lba, off_t count,
                           int flag);
 
 int Findjob_set_wanted_node(struct FindjoB *o, void *wanted_node, int flag);
diff --git a/xorriso/iso_manip.c b/xorriso/iso_manip.c
index ede9942e..e019f05b 100644
--- a/xorriso/iso_manip.c
+++ b/xorriso/iso_manip.c
@@ -3055,7 +3055,8 @@ return:
   3 = immediate decision : does match
 */
 {
- int value=0, ret, start_lba, end_lba, bless_idx, size_mode;
+ int value=0, ret, start_lba, bless_idx, size_mode;
+ off_t range_lba, end_lba;
  int lba_count, *file_end_lbas= NULL, *file_start_lbas= NULL, i, mask;
  void *arg1, *arg2;
  char ft, *decision, md5[16], bless_code[17];
@@ -3146,10 +3147,10 @@ return:
 
  break; case 4: /* -lba_range *arg1 *arg2 */
    value= 1;
-   start_lba= *((int *) ftest->arg1);
-   end_lba= *((int *) ftest->arg2);
+   range_lba= *((off_t *) ftest->arg1);
+   end_lba= *((off_t *) ftest->arg2);
    if(node == NULL) {
-     value= !(start_lba >= 0);
+     value= !(range_lba >= 0);
      goto ex;
    }
    ret= Xorriso__start_end_lbas(node, &lba_count, &file_start_lbas,
@@ -3157,15 +3158,15 @@ return:
    if(ret <= 0) {
      if(ret < 0)
        Xorriso_process_msg_queues(xorriso, 0);
-     if(start_lba >= 0)
+     if(range_lba >= 0)
        value= 0;
    } else {
      for(i= 0; i < lba_count; i++) {
-       if(start_lba >= 0) {
-         if(file_end_lbas[i] < start_lba || file_start_lbas[i] > end_lba)
+       if(range_lba >= 0) {
+         if(file_end_lbas[i] < range_lba || file_start_lbas[i] > end_lba)
            value= 0;
        } else {
-         if(file_end_lbas[i] >= -start_lba && file_start_lbas[i] <= -end_lba)
+         if(file_end_lbas[i] >= -range_lba && file_start_lbas[i] <= -end_lba)
            value= 0;
        }
      }
diff --git a/xorriso/iso_tree.c b/xorriso/iso_tree.c
index d488a025..068494ae 100644
--- a/xorriso/iso_tree.c
+++ b/xorriso/iso_tree.c
@@ -477,7 +477,7 @@ int Xorriso_path_from_lba(struct XorrisO *xorriso, IsoNode *node, int lba,
    return(ret);
  }
  if(flag & 1)
-   Findjob_set_lba_range(job, lba, 1, 0);
+   Findjob_set_lba_range(job, (off_t) lba, (off_t) 1, 0);
  else
    Findjob_set_wanted_node(job, (void *) node, 0);
  Findjob_set_action_found_path(job, 0);
diff --git a/xorriso/opts_d_h.c b/xorriso/opts_d_h.c
index e4aca4ff..c5c1b2c9 100644
--- a/xorriso/opts_d_h.c
+++ b/xorriso/opts_d_h.c
@@ -835,7 +835,8 @@ static int Xorriso_truncate_const_find_name(struct XorrisO *xorriso,
 int Xorriso_option_find(struct XorrisO *xorriso, int argc, char **argv,
                        int *idx, int flag)
 {
- int ret, i, end_idx, type= 0, action, deleter= 0, start_lba, count;
+ int ret, i, end_idx, type= 0, action, deleter= 0, count;
+ off_t start_lba, block_count;
  int list_extattr_head= 0, bsl_mem, disk_path, name_space, prefix_code;
  struct FindjoB *job, *first_job= NULL, *new_job;
  char *start_path, *path= NULL, *cpt, *other_path_start= NULL, *cd_pt;
@@ -919,9 +920,16 @@ not_enough_arguments:;
      i+= 2;
 
      /* >>> if letter suffix: use Scanf_io_size */
-     sscanf(argv[i-1], "%d", &start_lba);
-     sscanf(argv[i], "%d", &count);
-     Findjob_set_lba_range(job, start_lba, count, 0);
+     ret= Sfile_text_to_off_t(argv[i - 1], &start_lba, 0);
+     if(ret <= 0) {
+off_t_overflow:;
+       sprintf(xorriso->info_text, "-find[ix]: -lba_range number too large");
+       goto sorry_ex;
+     }
+     ret= Sfile_text_to_off_t(argv[i], &block_count, 0);
+     if(ret <= 0)
+       goto off_t_overflow;
+     Findjob_set_lba_range(job, start_lba, block_count, 0);
    } else if(strcmp(argv[i], "-pending_data")==0) {
      Findjob_set_commit_filter_2(job, 0);
    } else if(strcmp(argv[i], "-has_acl")==0) {
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index e2a391a2..770d1292 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2024.03.20.114449"
+#define Xorriso_timestamP "2024.03.20.150514"