vbr work, also problems to copy a file over 4096 bytes

disk_manager_utility.c

@@ -193,6 +193,19 @@ int main (int argc, char *argv[])
             // Parse parameters for cmd usage
             switch(argv[i][1]) 
             {
+                case 'd':
+                {
+                    // Load disk with specified name 
+                    i++; // Go to next parameter which is the path/filename for the new disk 
+                    if (i > argc) 
+                    {
+                        // Go to loop condition to exit
+                        continue;
+                    }
+                    settings->load_diskname = argv[i];
+
+                } break;
+
                 case 'n':
                 {
                     // Create new disk 
@@ -247,6 +260,11 @@ int main (int argc, char *argv[])
             }
         }
 
+        if (settings->new_diskname != NULL && settings->load_diskname != NULL) 
+        {
+            printf("-d and -n cannot be specified in the same qeury\n");
+            return 1;
+        }
         // Now execute the commands. 
         // First check if we should create a new disk
         if (settings->new_diskname != NULL) 
@@ -273,7 +291,7 @@ int main (int argc, char *argv[])
             {
                 lsfs_disk_install_bootloader(settings->install_bootloader_path);
             }
-            sleep(1);
+            
             if (settings->install_vbr_path != NULL) 
             {
                 lsfs_disk_install_vbr(settings->install_vbr_path);

lsfs_vbr/vbr_lsfs.nasm

@@ -1,7 +1,7 @@
 ORG 0x7c00
 BITS 16 
 %define DISK_SERVICE 0x0050:0x0000
-%define KERNEL       0x2500:0x0000 ;0x0050:0x0512
+%define KERNEL       0x0150:0x0000 ;0x0050:0x0512
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ; Volume Boot Record 
 ; This will start SingOS from the disk
@@ -120,8 +120,15 @@ ext_disk_supported:
     mov dl, [global_disk_identifier] 
     int 0x13
 
+
     mov cx, [vbr_LBA_FSCI]
+    mov WORD [Parameter_Struct.buffer_segment], 0x7e0
+    mov WORD [Parameter_Struct.buffer_address], 0x2200    ; Heap memory start adresses for the file system
+    mov WORD [Parameter_Struct.buffer_size], 0xFFFF       ; End address for the heap
+    mov WORD [Parameter_Struct.data_length], cx
+
     mov bx, ds
+    mov cx, Parameter_Struct
     mov ax, 0x1
     push cx
     push bx
@@ -161,7 +168,7 @@ ext_disk_supported:
     ; Set the Parameter_Struct
     mov ax, kernel_path
     mov [Parameter_Struct.path], ax
-    mov WORD [Parameter_Struct.buffer_segment], 0x2500
+    mov WORD [Parameter_Struct.buffer_segment], 0x0150
     mov WORD [Parameter_Struct.buffer_address], 0x00
     mov WORD [Parameter_Struct.buffer_size], 0xFFFF
     mov WORD [Parameter_Struct.byte_offset_into_file], 0x00

test/build.sh

@@ -0,0 +1 @@
+nasm -fbin test_kernel.nasm -o kernel.bin

test/test_kernel.nasm

@@ -0,0 +1,9 @@
+BITS 16 
+    ; ready to jump to the kernel 
+    xor bx, bx
+    mov al, 0x49
+    mov ah, 0x0E    
+    int 0x10
+
+    cli 
+    hlt

update_vbr.sh

@@ -0,0 +1,6 @@
+set -e
+cd lsfs_vbr/
+bash build.sh
+cd ..
+./disk_manager -d test.img -v lsfs_vbr/vbr.bin
+qemu-system-x86_64 test.img