diff --git a/patch.py b/patch.py
index c228ec4..6760998 100644
--- a/patch.py
+++ b/patch.py
@@ -106,40 +106,6 @@ def patch_bzimage(data:bytes,key_dict:dict):
     new_data = new_data.replace(vmlinux_xz,new_vmlinux_xz)
     return new_data
 
-def patch_block(dev:str,file:str,key_dict):
-    BLOCK_SIZE = 4096
-    #sudo debugfs /dev/nbd0p1 -R 'stats' | grep "Block size" | sed -n '1p' | cut -d ':' -f 2 
-
-    #sudo debugfs /dev/nbd0p1 -R 'stat boot/initrd.rgz' 2> /dev/null | sed -n '11p'
-    stdout,_ = run_shell_command(f"debugfs {dev} -R 'stat {file}' 2> /dev/null | sed -n '11p' ")
-    #(0-11):1592-1603, (IND):1173, (12-15):1604-1607, (16-26):1424-1434
-    blocks_info = stdout.decode().strip().split(',')
-    print(f'blocks_info : {blocks_info}')
-    blocks = []
-    ind_block_id = None
-    for block_info in blocks_info:
-        _tmp = block_info.strip().split(':')
-        if _tmp[0].strip() == '(IND)':
-            ind_block_id =  int(_tmp[1])
-        else:
-            print(f'block_info : {block_info}')
-            id_range = _tmp[0].strip().replace('(','').replace(')','').split('-')
-            block_range = _tmp[1].strip().replace('(','').replace(')','').split('-')
-            blocks += [id for id in range(int(block_range[0]),int(block_range[1])+1)]
-    print(f' blocks : {len(blocks)} ind_block_id : {ind_block_id}')
-    
-    #sudo debugfs /dev/nbd0p1  -R 'cat boot/initrd.rgz' > data
-    data,stderr = run_shell_command(f"debugfs {dev} -R 'cat {file}' 2> /dev/null")
-    new_data = patch_kernel(data,key_dict)
-    print(f'write block {len(blocks)} : [',end="")
-    with open(dev,'wb') as f:
-        for index,block_id in enumerate(blocks):
-            print('#',end="")
-            f.seek(block_id*BLOCK_SIZE)
-            f.write(new_data[index*BLOCK_SIZE:(index+1)*BLOCK_SIZE])
-        f.flush()
-        print(']')
-
 def patch_initrd_xz(initrd_xz:bytes,key_dict:dict,ljust=True):
     try:
         initrd = lzma.decompress(initrd_xz)
@@ -495,9 +461,6 @@ if __name__ == '__main__':
     kernel_parser = subparsers.add_parser('kernel',help='patch kernel file')
     kernel_parser.add_argument('input',type=str, help='Input file')
     kernel_parser.add_argument('-O','--output',type=str,help='Output file')
-    block_parser = subparsers.add_parser('block',help='patch block file')
-    block_parser.add_argument('dev',type=str, help='block device')
-    block_parser.add_argument('file',type=str, help='file path')
     buildefi_parser = subparsers.add_parser('buildefi',help='build efi file')
     buildefi_parser.add_argument('input',type=str, help='kernel file')
     buildefi_parser.add_argument('output',type=str,help='Output to file')
@@ -518,9 +481,6 @@ if __name__ == '__main__':
         print(f'patching {args.input} ...')
         data = patch_kernel(open(args.input,'rb').read(),key_dict)
         open(args.output or args.input,'wb').write(data)
-    elif args.command == 'block':
-        print(f'patching {args.file} in {args.dev} ...')
-        patch_block(args.dev,args.file,key_dict)
     elif args.command == 'buildefi':
         print(f'building EFI from {args.input} ...')
         build_efi(args.input,args.output)