How to convert from IDE mode to AHCI mode without reloading

how not to reload from IDE mode transitions to AHCI Mode

If you do not modify the BIOS hard drive settings and the system is installed in IDE mode, the system can only be started in IDE mode by default, and if you install the system and set the SATA controller to AHCI, it will cause a blue screen to start. Is it possible to enable AHCI mode without reloading the system? The answer is yes.

In this case, you can turn on AHCI mode by modifying the registry file. Here's how:

1. First enter the system in IDE mode, enter run regedit in the Run box, press ENTER, as shown in

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2. Navigate to "HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\SERVICES\MSAHCI" as shown in:

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4. Modify the "Start" in the project to "0" and save the restart.

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Modify the registry to turn on AHCI mode

1. Open the AHCI mode in the BIOS and wait for the driver to install after entering the system, then reboot the system.

Add:

Also note that AHCI is more efficient on the NTFS file system than FAT32, so it is recommended to use the NTFS format for each partition when using AHCI. While the system provides tools to convert Fat/fat32 to NTFS, from the point of view of the new large-capacity mechanical hard drives and SSD data alignment, we recommend that the data be copied first, then formatted into a 4K-aligned partition, then copy back, such disk efficiency will be higher.

Deep tip: IDE's lagecy mode and native mode

In IDE mode, there is generally the difference between the Lagecy compatibility mode and the native native mode, in Lagecy mode, the SATA controller allocates dedicated, non-shareable IRQ hardware resources to the disk, which is very old and inefficient for win9x/me systems. The native mode is a more flexible mode for IRQ hardware resources, which is used for Win2000, WinXP, Win7, Win8 and other new operating systems. Therefore, unless you want to use Win98, WinME, or the general use of the IDE with the native mode.

How to convert from IDE mode to AHCI mode without reloading