Are the C drive files still there after reinstalling the system?

There are two situations, one is that the system disk files disappear, the other is that the system disk files are retained, the details are as follows:

1. All system disk files disappear, Installing the ghost system will definitely format the system disk (usually the C drive). Even if it has not been manually formatted before, the disk will be formatted during the installation process and all system disk files will disappear.

2. System disk files are retained.

①Use the original system hard disk to decompress and install. Without the help of other tools, the C drive will not be formatted. At this time, the old system files will be retained in C. Disk

② The original system upgrade process will not format the system disk (usually the C drive). For example, if win7 upgrades win10 through the original image, the old system files will also be retained.

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