Win10 9879 installed 2100 error after the hard disk solution

Recently, many users said that they installed Win10 preview version 9879, the boot prompts the hard disk 2100 error, resulting in hard drive damage. So how do we fix this problem then

cause of the malfunction:?

9879 because of ignoring or not properly recognized by the computer support, directly open the mechanical hard disk PUIS (Power-up In standby, standby power-on) function. PUIS requires BIOS support. If PUIS is booted on the drive, but the system's BIOS does not support this feature, the hard drive may not be detected by the system, or the detected size is zero. PUIS is supported by most RAID chips.

Repair method:

(1) Download hdat2.

Download HDAT2_50.EXE in the dos environment and put it in the USB flash drive supported by your dos environment.

No dos environment or do not know how to get it, download HDAT2ISO_50_LITE.EXE, extract hdat2_v50_lite.iso after running, use UltraISO to write the decompressed hdat2_v50_lite.iso to the U disk. Shut down and input HDAT2_50 /w or HDAT2 /W from the USB flash drive.

Explanation: The /W parameter is the wake-up of Wake Up, which means that PUIS is turned off. After the repair is complete, the current hard drive list will be listed, press Esc to exit, then press the power button to shut down.

Our disk is unreadable, so we need to temporarily read the disk before it can be modified normally.

How to make DOS and PE dual boot U disk? Make DOS boot system, if not booted by PE The hard disk is unrecognizable. This method requires a temporary identification of the hard disk, it is recommended to use the U hero U disk to start the production tool to make.

(2) Select Win03 PE 2013 enhanced version to start once, you can read the hard disk.

The above method uses a mechanical hard disk for users to refer to to solve the problem. Users who use SSDs are not bothered by this, because the SSD has no mechanical rotation and there is no PUIS function, so it is not affected.