Lines Matching refs:mbr
298 static struct rwblock mbr = {
315 mbr.bufferoffset = (uintptr_t) buf;
316 mbr.bufferseg = ds();
320 :"c"(0x0841), "d"(&mbr), "b"(drive), "m"(mbr));
330 :"c"(0x4841), "d"(&mbr), "b"(drive), "m"(mbr));
334 die("mbr write error");
344 mbr.bufferoffset = (uintptr_t) buf;
345 mbr.bufferseg = ds();
349 :"c"(0x0861), "d"(&mbr), "b"(drive), "m"(mbr));
359 :"c"(0x4861), "d"(&mbr), "b"(drive), "m"(mbr));
363 die("mbr read error");
515 * This function does any desired MBR manipulation; called with the device lock held.
741 * Muck with the MBR, if desired, while we hold the lock
