U

UDF (Universal Disk Format), I/O System Components, Windows File System Formats, UDF
UDFS (user defined file system), The BIOS Boot Sector and Bootmgr
Udfs.sys (UDF driver), UDF, Local FSDs
UEFI systems, MBR-Style Partitioning, GUID Partition Table Partitioning, Boot Process, The UEFI Boot Process, The UEFI Boot Process
UI0Detect.exe (Interactive Services Detection service), Smss, Csrss, and Wininit
UMDF (User-Mode Driver Framework), Types of Device Drivers, User-Mode Driver Framework (UMDF), User-Mode Driver Framework (UMDF), User-Mode Driver Framework (UMDF)
Umpnpmgr.dll, Driver Installation
underrun detection, Driver Verifier
UNDI (Universal Network Device Interface), Booting from iSCSI
undo entries, Log Record Types, Log Record Types
undo pass, Logging Implementation, Log File Service, Undo Pass, Undo Pass, Undo Pass
undo records, Logging Implementation
undo/redo histories, Common Log File System
undocking, Level of Plug and Play Support
UNEXPECTED_KERNEL_MODE_TRAP stop code, Causes of Windows Crashes, 0x7F - UNEXPECTED_KERNEL_MODE_TRAP, 0xC5 - DRIVER_CORRUPTED_EXPOOL
Unicode, CDFS, FAT12, FAT16, and FAT32, Unicode-Based Names, Unicode-Based Names, File Records, File NamesFile Names, File Names, File Names
unified caching (Store Manager), Unified Caching, Unified Caching, Unified Caching
Unified Extensible Firmware Interface (UEFI), GUID Partition Table Partitioning, GUID Partition Table Partitioning, Boot Process, The UEFI Boot Process
unique IDs (partition manager), Partition Manager
Universal Disk Format (UDF), I/O System Components, CDFS, FAT12, FAT16, and FAT32
Universal Network Device Interface (UNDI), Booting from iSCSI
unkillable processes, I/O Cancellation, I/O Cancellation, I/O Cancellation for Thread Termination
unknown page fault errors, Invalid PTEs
unload routines, Structure of a DriverDriver Objects and Device Objects, Structure of a Driver, Driver Objects and Device Objects
unloading drivers, I/O System Components
unmapped pages, Page Files
unnamed data attributes, File Records, File Records
unnamed file streams, Cache Working Set Size, Multiple Data Streams
unparked cores, Thresholds and Policy Settings, Performance Check
unpinning pages, Caching with the Mapping and Pinning Interfaces
unsigned drivers, Driver Installation, Driver Installation, Using Crash Troubleshooting Tools, Hung or Unresponsive Systems
untrusted locations, Multiple Data Streams
unwinding, Kernel Stacks
update records, Log Record Types, Log Record Types, Recovery, Redo Pass
update sequence numbers (USNs), Change Logging, The Change Journal File, On-Disk Implementation
updating, Solid State Disks, File Deletion and the Trim Command, Post–Splash Screen Crash or Hang, Verbose Analysis
device drivers, Post–Splash Screen Crash or Hang
flash memory, Solid State Disks
kernel, Verbose Analysis
sectors, File Deletion and the Trim Command
upper-level filter drivers, Device Stacks, Device Stack Driver Loading
uppercase characters, Master File Table
uppercase file (, Master File Table
uptime, listing, Advanced Crash Dump Analysis
USB (universal serial bus), Types of Device Drivers, Bandwidth Reservation (Scheduled File I/O), KMDF Data Model, Volume Management, The BIOS Boot Sector and Bootmgr
bandwidth reservation, Bandwidth Reservation (Scheduled File I/O)
basic disks, Volume Management
drivers, Types of Device Drivers
KMDF objects, KMDF Data Model
ports, The BIOS Boot Sector and Bootmgr
USB debugger, The BIOS Boot Sector and Bootmgr, The BIOS Boot Sector and Bootmgr
USB dongles, Hung or Unresponsive Systems
USB flash devices, KMDF Data Model, User-Mode Driver Framework (UMDF), BitLocker Drive Encryption, Encryption Keys, BitLocker To Go, ReadyBoost, Unified Caching, Unified Caching
BitLocker, Encryption Keys
BitLocker To Go, BitLocker To Go
KMDF objects, KMDF Data Model
ReadyBoost, ReadyBoost, Unified Caching
startup disks, BitLocker Drive Encryption
stores, Unified Caching
UMDF display, User-Mode Driver Framework (UMDF)
USB keyboards, Hung or Unresponsive Systems
use after free bugs, Buffer Overruns, Memory Corruption, and Special Pool
usefirmwarepcisettings element, The BIOS Boot Sector and Bootmgr
uselegacyapicmode element, The BIOS Boot Sector and Bootmgr
usephysicaldestination element, The BIOS Boot Sector and Bootmgr
useplatformclock element, The BIOS Boot Sector and Bootmgr
user address space, Virtual Address Space Layoutsx86 Address Space Layouts, x86 Address Space Layouts, User Address Space LayoutUser Address Space Layout, User Address Space Layout, User Address Space Layout, Controlling Security Mitigations
layout overview, User Address Space LayoutUser Address Space Layout, User Address Space Layout, User Address Space Layout
security mitigations, Controlling Security Mitigations
virtual address space layouts, Virtual Address Space Layoutsx86 Address Space Layouts, x86 Address Space Layouts
user buffers, Thread Agnostic I/O
user code address translation, IA64 Virtual Address Translation
user data stream caching, Single, Centralized System Cache
user defined file system (UDFS), The BIOS Boot Sector and Bootmgr
user IDs, Quota TrackingConsolidated Security, Quota Tracking, Consolidated Security
User objects, Types of Heaps
user process address space, The BIOS Boot Sector and Bootmgr
user scripts, Smss, Csrss, and Wininit
user space layouts, System Virtual Address Space QuotasControlling Security Mitigations, User Address Space Layout, Image Randomization, Heap Randomization, Controlling Security Mitigations, Address Translation
user stacks, Stacks, User Stacks
user-initiated I/O cancellation, User-Initiated I/O CancellationUser-Initiated I/O Cancellation, User-Initiated I/O Cancellation, I/O Cancellation for Thread Termination
user-mode accessible bit, Physical Address Extension (PAE)
user-mode applications, Typical I/O ProcessingDevice Drivers, Device Drivers
user-mode buffers, Opening Devices
user-mode code, Page Tables and Page Table Entries
user-mode debugging framework, Initializing the Kernel and Executive Subsystems, Initializing the Kernel and Executive Subsystems
User-Mode Driver Framework (UMDF), Types of Device Drivers, User-Mode Driver Framework (UMDF), User-Mode Driver Framework (UMDF), User-Mode Driver Framework (UMDF), The Plug and Play (PnP) Manager
user-mode drivers, Types of Device Drivers, User-Mode Driver Framework (UMDF), User-Mode Driver Framework (UMDF), User-Mode Driver Framework (UMDF), The Plug and Play (PnP) Manager
user-mode exceptions, The BIOS Boot Sector and Bootmgr
user-mode heaps, Heap Manager Structure
user-mode page faults, Page Fault Handling
user-mode pages, No Execute Page Protection
user-mode processes, Memory Notification EventsMemory Notification Events, Memory Notification Events, Memory Notification Events
user-mode stack, Reserving and Committing PagesReserving and Committing Pages, Reserving and Committing Pages, Reserving and Committing Pages
user-mode virtual address space, x64 Virtual Addressing Limitations
Userinit.exe, Smss, Csrss, and Wininit, Safe-Mode-Aware User Programs
users, Scenarios
fast-user switching, Scenarios
Usndump.exe utility, The Change Journal File
USN_REASON identifiers, The Change Journal FileThe Change Journal File, The Change Journal File, The Change Journal File
UTF-16 characters, Unicode-Based Names
utility, processor, Utility Function, Utility Function, Utility Function, Utility Function, Thresholds and Policy Settings, Thresholds and Policy Settings, Performance Check, Performance Check, Performance Check
Uuidgen utility, Driver Objects and Device Objects