IDE Channel (atapi) Service Defaults in Windows 10

ATAPI IDE Miniport Driver by Microsoft Corporation.

Default Settings

Startup type:
Windows 10 Home 1507Boot
Windows 10 Pro 1507Boot
Windows 10 Education 1507Boot
Windows 10 Enterprise 1507Boot
Windows 10 Home 1511Boot
Windows 10 Pro 1511Boot
Windows 10 Education 1511Boot
Windows 10 Enterprise 1511Boot
Windows 10 Home 1607Boot
Windows 10 Pro 1607Boot
Windows 10 Education 1607Boot
Windows 10 Enterprise 1607Boot
Windows 10 Home 1703Boot
Windows 10 Pro 1703Boot
Windows 10 Education 1703Boot
Windows 10 Enterprise 1703Boot
Windows 10 Home 1709Boot
Windows 10 Pro 1709Boot
Windows 10 Education 1709Boot
Windows 10 Enterprise 1709Boot
Windows 10 Home 1803Boot
Windows 10 Pro 1803Boot
Windows 10 Education 1803Boot
Windows 10 Enterprise 1803Boot
Windows 10 Home 1809Boot
Windows 10 Pro 1809Boot
Windows 10 Education 1809Boot
Windows 10 Enterprise 1809Boot
Windows 10 Home 1903Boot
Windows 10 Pro 1903Boot
Windows 10 Education 1903Boot
Windows 10 Enterprise 1903Boot
Windows 10 Home 2004Boot
Windows 10 Pro 2004Boot
Windows 10 Education 2004Boot
Windows 10 Enterprise 2004Boot
Windows 10 Home 20H2Boot
Windows 10 Pro 20H2Boot
Windows 10 Education 20H2Boot
Windows 10 Enterprise 20H2Boot
Windows 10 Home 21H1Boot
Windows 10 Pro 21H1Boot
Windows 10 Education 21H1Boot
Windows 10 Enterprise 21H1Boot
Windows 10 Home 21H2Manual
Windows 10 Pro 21H2Manual
Windows 10 Education 21H2Manual
Windows 10 Enterprise 21H2Manual
Display name:IDE Channel
Service name:atapi
Service type:kernel
Error control:critical
Group:SCSI Miniport
Path:%SystemRoot%\System32\drivers\atapi.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\atapi

Default Behavior

IDE Channel is a kernel device driver. It is starting by the operating system Boot Loader as a part of the driver stack for the boot volume in all editions of Windows 10 1507, Windows 10 1511, Windows 10 1607, Windows 10 1703, Windows 10 1709, Windows 10 1803, Windows 10 1809, Windows 10 1903, Windows 10 2004, Windows 10 20H2, Windows 10 21H1. This service is starting only if the user, an application or another service starts it in all editions of Windows 10 21H2.

If IDE Channel fails to load or initialize, Windows 10 attempts to record the error details into Event Log and restart the PC, using the Last Known Good configuration. If the Last Known Good configuration cannot be applied or working improperly, Windows 10 startup process halts with a Stop error. If you disable or delete the atapi service, Windows 10 won't start.

Restore Default Startup Configuration of IDE Channel

1. Run the Command Prompt as an administrator.

2. Depending on the version of your operating system, copy the commands below, paste them into the command window and press ENTER.

For Windows 10 1507 Home, Windows 10 1507 Pro, Windows 10 1507 Education, Windows 10 1507 Enterprise, Windows 10 1511 Home, Windows 10 1511 Pro, Windows 10 1511 Education, Windows 10 1511 Enterprise, Windows 10 1607 Home, Windows 10 1607 Pro, Windows 10 1607 Education, Windows 10 1607 Enterprise, Windows 10 1703 Home, Windows 10 1703 Pro, Windows 10 1703 Education, Windows 10 1703 Enterprise, Windows 10 1709 Home, Windows 10 1709 Pro, Windows 10 1709 Education, Windows 10 1709 Enterprise, Windows 10 1803 Home, Windows 10 1803 Pro, Windows 10 1803 Education, Windows 10 1803 Enterprise, Windows 10 1809 Home, Windows 10 1809 Pro, Windows 10 1809 Education, Windows 10 1809 Enterprise, Windows 10 1903 Home, Windows 10 1903 Pro, Windows 10 1903 Education, Windows 10 1903 Enterprise, Windows 10 1909 Home, Windows 10 1909 Pro, Windows 10 1909 Education, Windows 10 1909 Enterprise, Windows 10 2004 Home, Windows 10 2004 Pro, Windows 10 2004 Education, Windows 10 2004 Enterprise, Windows 10 20H2 Home, Windows 10 20H2 Pro, Windows 10 20H2 Education, Windows 10 20H2 Enterprise, Windows 10 21H1 Home, Windows 10 21H1 Pro, Windows 10 21H1 Education, Windows 10 21H1 Enterprise:
sc config atapi start= boot
sc start atapi

For Windows 10 21H2 Home, Windows 10 21H2 Pro, Windows 10 21H2 Education, Windows 10 21H2 Enterprise:
sc config atapi start= demand

3. Close the command window and restart the computer.

The atapi service is using the atapi.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.