PrepareModifications
status_t PrepareModifications();
bool prepared = fDisk->PrepareModifications() == B_OK;
device->PrepareModifications();
bool prepared = disk->PrepareModifications() == B_OK;
fModificationStatus(fDisk->PrepareModifications())
status = device.PrepareModifications();
status = device.PrepareModifications();
status = device.PrepareModifications();
status_t error = fDevice->PrepareModifications();
error = fDevice->PrepareModifications();
error = device.PrepareModifications();