Maybe it's not the only function, but it should be one. I don't know if others have posted it.
It is to allow WIN7 to be installed on partitions with hard disk clusters larger than 4KB, because under the NTFS format, the boot file can only work in 4KB cluster partitions. This 100M is used to store the boot file of WIN7, so that the primary partition for installing WIN7 can be set For other size clusters, even FAT32 format (to be verified).
We all know that the larger the cluster, the better the disk performance and less fragmentation, but it will take up more space. Now that hard disks are larger, it is worth sacrificing some space for performance.
We can start like this, start the CD-ROM drive, use WIN's built-in partition function to first create a 100M system partition, then exit, put the U disk or CD into the PM to create the primary partition, and then specify the cluster size by yourself~
PS. What I learned today when I was studying the size of the allocation unit is wrong. Don’t complain~
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