diff --git a/pvmfw/src/gpt.rs b/pvmfw/src/gpt.rs
index 1060460..06bf994 100644
--- a/pvmfw/src/gpt.rs
+++ b/pvmfw/src/gpt.rs
@@ -103,7 +103,7 @@
 
     fn new(mut device: VirtIOBlk) -> Result<Self> {
         let mut blk = [0; Self::LBA_SIZE];
-        device.read_block(Header::LBA, &mut blk).map_err(Error::FailedRead)?;
+        device.read_blocks(Header::LBA, &mut blk).map_err(Error::FailedRead)?;
         let header = Header::read_from_prefix(blk.as_slice()).unwrap();
         if !header.is_valid() {
             return Err(Error::InvalidHeader);
@@ -145,11 +145,11 @@
     }
 
     fn read_block(&mut self, index: usize, blk: &mut [u8]) -> Result<()> {
-        self.device.read_block(index, blk).map_err(Error::FailedRead)
+        self.device.read_blocks(index, blk).map_err(Error::FailedRead)
     }
 
     fn write_block(&mut self, index: usize, blk: &[u8]) -> Result<()> {
-        self.device.write_block(index, blk).map_err(Error::FailedWrite)
+        self.device.write_blocks(index, blk).map_err(Error::FailedWrite)
     }
 }