diff --git a/kernel/hal/x86/blk/BlockDevice.cpp b/kernel/hal/x86/blk/BlockDevice.cpp
index cef07da..303891e 100644
--- a/kernel/hal/x86/blk/BlockDevice.cpp
+++ b/kernel/hal/x86/blk/BlockDevice.cpp
@@ -71,4 +71,22 @@ namespace MTGosHAL {
     return drivenum;
   }
   BlockDevice::~BlockDevice() {};
+  auto BlockDevice::readSector(uint8_t drv, uint64_t sectorNum, uint8_t *buf) -> void {
+    if(!(existent&(1<<drv)))
+      return;
+    outb(ataports[drv>>1]+DRV, 0x40 | (drv&1)<<4);
+    outb(ataports[drv>>1]+SECTOR_CNT, 0);
+    outb(ataports[drv>>1]+LBAlo, (uint8_t)(sectorNum>>24));
+    outb(ataports[drv>>1]+LBAmid, (uint8_t)(sectorNum>>32));
+    outb(ataports[drv>>1]+LBAhi, (uint8_t)(sectorNum>>40));
+    outb(ataports[drv>>1]+SECTOR_CNT, 1);
+    outb(ataports[drv>>1]+LBAlo, (uint8_t)(sectorNum));
+    outb(ataports[drv>>1]+LBAmid, (uint8_t)(sectorNum>>8));
+    outb(ataports[drv>>1]+LBAhi, (uint8_t)(sectorNum>>16));
+    outb(ataports[drv>>1]+CMD, 0x24);
+    while(inb(ataports[drv>>1]+CMD)&0x80);
+    uint16_t *bufw=(uint16_t *)buf;
+    for(int i=0;i<256;i++)
+      bufw[i]=inb(ataports[drv>>1]);
+  }
 }
diff --git a/kernel/hal/x86/include/blockdev.hpp b/kernel/hal/x86/include/blockdev.hpp
index 635e0e1..9a2f240 100644
--- a/kernel/hal/x86/include/blockdev.hpp
+++ b/kernel/hal/x86/include/blockdev.hpp
@@ -11,8 +11,8 @@ namespace MTGosHAL {
     ~BlockDevice();
     auto getDriveCnt() -> uint8_t;
     auto getDriveNumByName(const char *) -> uint8_t; //Returns -1 if device is not existent
-    auto readSector(uint32_t drv, uint64_t sectorNum, uint8_t *buf); //Has to be at least 512 bytes big!
-    auto readSectors(uint32_t drv, uint64_t sectorNum, uint32_t num, uint8_t *buf); //Has to be at least num*512 bytes big!
+    auto readSector(uint8_t drv, uint64_t sectorNum, uint8_t *buf) -> void; //Has to be at least 512 bytes big!
+    auto readSectors(uint8_t drv, uint64_t sectorNum, uint32_t num, uint8_t *buf) -> void; //Has to be at least num*512 bytes big!
 
   };
 }