Microsoft-Windows-Disk

22 events across 3 channels

Event	Title	Channel	Sample
1	Disk Cache Information	Operational	Y
201	Request servicing time taken by lower driver stack(s).	Analytic	N
202	Dispatching a read request.	Diagnose	N
203	Dispatching a write request.	Diagnose	N
204	Dispatching a read request.	Diagnose	N
205	Dispatching a write request.	Diagnose	N
206	Dispatching a read request.	Diagnose	N
207	Dispatching a write request.	Diagnose	N
208	Completing an IO (read/write) request.	Diagnose	N
209	Retrying an IO (read/write) request.	Diagnose	N
210	Flush request.	Diagnose	N
211	Flush request.	Diagnose	N
212	Dispatching an IOCTL.	Diagnose	Y
213	Dispatching a WMI request.	Diagnose	N
214	Completing a non-read/write request.	Diagnose	Y
215	Dispatching a power request.	Diagnose	N
216	Completing a power request.	Diagnose	N
217	Dispatching a PnP request.	Diagnose	N
218	Completing a PnP request.	Diagnose	N
219	Completing a PnP enumeration request.	Diagnose	N
220	Performing a queue-related operation.	Diagnose	N
221	Dispatching a PassThrough request.	Diagnose	N

Event ID 1: Disk Cache Information

Provider: Microsoft-Windows-Disk
Channel: Operational
Also via: realtime ETW trace
Level: Informational
Task: DiskCacheInformation
Opcode: OpCodeDiskCacheInfo

Description

Disk Cache Information.

Message #

Disk Cache Information

Fields #

Name	Description
`ReadCacheEnabled` UInt8
`WriteCacheEnabled` UInt8
`ReadRetentionPriority` UInt8
`WriteRetentionPriority` UInt8
`PrefetchScalar` UInt8
`DisablePrefetchTransferLength` UInt16
`Minimum` UInt16
`Maximum` UInt16
`MaximumBlocks` UInt16
`DeviceNumber` UInt32

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Disk",
    "guid": "{6B4DB0BC-9A3D-467D-81B9-A84C6F2F3D40}",
    "event_source_name": "",
    "event_id": 1,
    "version": 1,
    "level": 4,
    "task": 1,
    "opcode": 11,
    "keywords": "0x0000000000000001",
    "time_created": "2026-06-02T05:15:51.188+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 4776,
      "thread_id": 12500
    },
    "channel": "ETW Trace",
    "computer": "JD-DC01-2022",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "DeviceNumber": 0,
    "DisablePrefetchTransferLength": 0,
    "Maximum": 0,
    "MaximumBlocks": 0,
    "Minimum": 0,
    "PrefetchScalar": 0,
    "ReadCacheEnabled": 1,
    "ReadRetentionPriority": 0,
    "WriteCacheEnabled": 1,
    "WriteRetentionPriority": 0
  },
  "message": "TaskDiskCacheInfo"
}

Event ID 201: Request servicing time taken by lower driver stack(s).

Provider: Microsoft-Windows-Disk
Channel: Analytic
Task: Class

Description

Request servicing time taken by lower driver stack(s).

Message #

Request servicing time taken by lower driver stack(s).

Fields #

Name	Description
`DeviceNumber` UInt32
`RequestDuration` UInt64
`Irp` Pointer
`Command` UInt8
`SrbStatus` UInt8

Event ID 202: Dispatching a read request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a read request.

Message #

Dispatching a read request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Command` UInt8
`LengthOfTransfer` UInt64
`LBA` HexInt64

Event ID 203: Dispatching a write request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a write request.

Message #

Dispatching a write request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Command` UInt8
`LengthOfTransfer` UInt64
`LBA` HexInt64

Event ID 204: Dispatching a read request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a read request.

Message #

Dispatching a read request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Command` UInt8
`LengthOfTransfer` UInt64
`LBA` HexInt64

Event ID 205: Dispatching a write request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a write request.

Message #

Dispatching a write request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Command` UInt8
`LengthOfTransfer` UInt64
`LBA` HexInt64

Event ID 206: Dispatching a read request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a read request.

Message #

Dispatching a read request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Command` UInt8
`LengthOfTransfer` UInt64
`LBA` HexInt64

Event ID 207: Dispatching a write request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a write request.

Message #

Dispatching a write request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Command` UInt8
`LengthOfTransfer` UInt64
`LBA` HexInt64

Event ID 208: Completing an IO (read/write) request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Completionofrequest.

Description

Completing an IO (read/write) request.

Message #

Completing an IO (read/write) request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`NTStatus` HexInt32	NTSTATUS reference
`SrbStatus` UInt8
`ScsiStatus` UInt8
`SenseKey` UInt8
`AddSense` UInt8
`AddSenseQ` UInt8

Event ID 209: Retrying an IO (read/write) request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Retryhandling.

Description

Retrying an IO (read/write) request.

Message #

Retrying an IO (read/write) request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`CurrentRetryCount` UInt32

Event ID 210: Flush request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class

Description

Flush request.

Message #

Flush request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Bus` UInt8
`Target` UInt8
`LUN` UInt8

Event ID 211: Flush request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Completionofrequest.

Description

Flush request.

Message #

Flush request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`NTStatus` HexInt32	NTSTATUS reference
`SrbStatus` UInt8
`ScsiStatus` UInt8
`SenseKey` UInt8
`AddSense` UInt8
`AddSenseQ` UInt8

Event ID 212: Dispatching an IOCTL.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Also via: realtime ETW trace
Level: Informational
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching an IOCTL.

Message #

Dispatching an IOCTL.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`MajorFunction` HexInt32
`MinorFunction` HexInt32
`Parameter` HexInt32

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Disk",
    "guid": "{6B4DB0BC-9A3D-467D-81B9-A84C6F2F3D40}",
    "event_source_name": "",
    "event_id": 212,
    "version": 1,
    "level": 4,
    "task": 200,
    "opcode": 100,
    "keywords": "0x4000000040000000",
    "time_created": "2026-06-02T05:15:44.029+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 4624,
      "thread_id": 8244
    },
    "channel": "ETW Trace",
    "computer": "JD-DC01-2022",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "DeviceNumber": 0,
    "Irp": "0xFFFF878DC9F51CC0",
    "MajorFunction": "0E000000",
    "MinorFunction": "00000000",
    "Parameter": "140C2D00"
  },
  "message": "Class"
}

Event ID 213: Dispatching a WMI request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a WMI request.

Message #

Dispatching a WMI request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`MajorFunction` HexInt32
`MinorFunction` HexInt32
`Parameter` HexInt32

Event ID 214: Completing a non-read/write request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Also via: realtime ETW trace
Level: Informational
Task: Class
Opcode: Completionofrequest.

Description

Completing a non-read/write request.

Message #

Completing a non-read/write request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Status` HexInt32	NTSTATUS reference

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-Disk",
    "guid": "{6B4DB0BC-9A3D-467D-81B9-A84C6F2F3D40}",
    "event_source_name": "",
    "event_id": 214,
    "version": 1,
    "level": 4,
    "task": 200,
    "opcode": 101,
    "keywords": "0x40000000C0000000",
    "time_created": "2026-06-02T05:15:51.188+00:00",
    "event_record_id": 0,
    "correlation": {},
    "execution": {
      "process_id": 4776,
      "thread_id": 12500
    },
    "channel": "ETW Trace",
    "computer": "JD-DC01-2022",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "DeviceNumber": 0,
    "Irp": "0xFFFF878DC06EC010",
    "Status": "850100C0"
  },
  "message": "Class"
}

Event ID 215: Dispatching a power request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a power request.

Message #

Dispatching a power request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`MinorFunction` HexInt32
`Type` UInt8
`OldState` HexInt32
`NewState` HexInt32
`Action` HexInt32
`PowerStateContext` HexInt32

Event ID 216: Completing a power request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Completionofrequest.

Description

Completing a power request.

Message #

Completing a power request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Status` HexInt32	NTSTATUS reference

Event ID 217: Dispatching a PnP request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a PnP request.

Message #

Dispatching a PnP request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`MinorFunction` HexInt32
`Type` HexInt32
`DeviceObject` Pointer

Event ID 218: Completing a PnP request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Completionofrequest.

Description

Completing a PnP request.

Message #

Completing a PnP request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`Status` HexInt32	NTSTATUS reference

Event ID 219: Completing a PnP enumeration request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Completionofrequest.

Description

Completing a PnP enumeration request.

Message #

Completing a PnP enumeration request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`NumberOfChildren` UInt32
`Status` HexInt32	NTSTATUS reference

Event ID 220: Performing a queue-related operation.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Queue_relatedoperation.

Description

Performing a queue-related operation.

Message #

Performing a queue-related operation.

Fields #

Name	Description
`DeviceNumber` UInt32
`QueueTag` HexInt32
`Operation` UInt8	Known values `%%2456` Open key file. `%%2457` Delete key file. `%%2458` Read persisted key from file. `%%2459` Write persisted key to file. `%%2464` Export of persistent cryptographic key. `%%2465` Import of persistent cryptographic key. `%%2480` Open Key. `%%2481` Create Key. `%%2482` Delete Key. `%%2483` Encrypt. `%%2484` Decrypt. `%%2485` Sign hash. `%%2486` Secret agreement. `%%2487` Domain settings. `%%2488` Local settings. `%%2489` Add provider. `%%2490` Remove provider. `%%2491` Add context. `%%2492` Remove context. `%%2493` Add function. `%%2494` Remove function. `%%2495` Add function provider. `%%2496` Remove function provider. `%%2497` Add function property. `%%2498` Remove function property. `%%2499` Machine key. `%%2500` User key. `%%2501` Key Derivation. `%%2502` Claim Creation. `%%2503` Claim Verification.
`Status` HexInt32	NTSTATUS reference

Event ID 221: Dispatching a PassThrough request.

Provider: Microsoft-Windows-Disk
Channel: Diagnose
Task: Class
Opcode: Dispatchingofrequest.

Description

Dispatching a PassThrough request.

Message #

Dispatching a PassThrough request.

Fields #

Name	Description
`DeviceNumber` UInt32
`Irp` Pointer
`MajorFunction` HexInt32
`MinorFunction` HexInt32
`Parameter` HexInt32

Provenance

Where this provider's schema came from, and which Windows build it was observed on. Windows can change a provider's event schema between builds, so use this to judge whether it matches the build you collect from.

ETW provider GUID {6B4DB0BC-9A3D-467D-81B9-A84C6F2F3D40}

Defined in disk.sys, the binary that emits these events.

Observed on:

WS2022-20348.4893, sample captured from a live trace, binary version 10.0.20348.1, captured 2026-06-02
WS2022-20348.4893, schema read from the registered manifest, binary version 10.0.20348.1, captured 2026-06-02
Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.1, captured 2026-06-02

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)