sector_align_up
newSize = sector_align_up(newSize, partition->block_size);
start = sector_align_up(start, partition->block_size);
*start = sector_align_up(*start, partition->block_size);
*start = sector_align_up(*start, partition->block_size);
offset = sector_align_up(offset, partition->block_size);
offset = sector_align_up(offset, partition->block_size);