msahci.sys - Necessary

%sysdir%\drivers\msahci.sys

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Description:

%sysdir%\drivers\msahci.sys
%SysDir%\drivers\MSAHCI.SYS is related to MS AHCI 1.0 Standard Driver.\MSAHCI.SYS is a part of Microsoft® Windows® Operating System.
Manufacturer: Microsoft Corp.
www.microsoft.com