Hard drives, like houses, need to be tidied up more often. To defragment your disk, you need a Disk Defragmenter, which can defragment volumes formatted with file allocation table (FAT) file system, FAT32 file system and NTFS file system. Disk defragmentation is actually to rewrite the files on the hard disk to maintain the continuity of the files. Only reading and writing the hard disk frequently for a long time will cause some damage to the hard disk, but defragmenting the hard disk is harmless, because most people don't do it once a day, and the finishing time is also very short, so they don't read and write the hard disk for a long time. Don't be too concerned that defragmentation will damage the service life of the hard disk. It is recommended to defragment the disk once or twice a month at most to keep the reading and writing speed of the hard disk in the best condition.
Stop halfway. no problem.
General household users do it once every month/kloc-0, and business users and servers do it once every half month.
Will not damage the hard disk.