Windows xp hal management

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Sign in to follow this Followers 0. Posted February 9, However, nothing is shown, just turnoff suddenly. Thanks a lot, Maxx. Share this post Link to post. Recommended Posts. Mark this reply as best answer, if it answered your question.

Upvote if you found this answer helpful or interesting. Cisnet is an internet service provider and not the name of your system brand, if you are not sure then you must use Win xp disk to repair the missing file. Error " hal. The following messages appear:. Scanning all disks for Windows installations.

Please wait, since this may take a while The Windows installation scan was successful. These results are stored statistically for this session. If the disk configuration changes during this session, in order to get an updated scan, you must first reboot the machine and then rescan the disks.

Total identified Windows installs: 1 appears, if there is only one installation of Windows identified by the scanning process.

Type the following text: y. Enter Load Identifier appears. Enter OS Load Options appears. Type the following text: exit. The system boots into Windows XP. I've been having the same problem with this error message. On a few occations the company tech desides to attempt to answer questions regarding this matter but the answers provided do not work for very clear reasons. I was wondering if you have had the chance to hear weather or not there will be a law suit regarding this matter.

If there is please contact me ASAP. Seeing as I have had some expensive equipment destroyed as a result of this problem. Please if you wish to use this comment on the fourm please do. The MS Company should pay for or replace all damaged equipment due to this matter. I just found out I had the same problem on my pc. How I found this was I was trying to do a system restore, and no matter what date I chose, it would not restore.

Someone from MS emailed and said to try to run system restore in safe mode. While in safe mode, it gave me the option of logging into Windows XP Home Edition or regular Windows, When I tried to log on to the XP version, I got that same dratted error message about that stupid dll file!!

Logging into regular windows, no problem and I was able to do the system restore. Other than that, I am able to shut down the computer and restart. I have emailed MS again the same rep who helped with the system restore and I will write back to tell what she says about this file.

Well i had the similiar problem with my laptop, the only thing problem is that my laptop does not have a CD hard drive. I asked one of my teachers at the Saginaw Career Complex told me to get on antoher computer and follow these steps make sure you have an flash drive :. Sign in. United States English.

Ask a question. Quick access. Search related threads. Remove From My Forums. Asked by:. Archived Forums M. Sign in to vote. Tuesday, March 13, PM. I have the same problem as above except I have by recover disks. Friday, April 20, PM. Sunday, April 22, AM. I just had the same thing happen after losing a hard drive and getting it replaced then downloaded updates 70 of them of which 53 failed, asked for a restart and then got the message, does not look like anyone has a answer yet.

This means disconnected laptop users with domain accounts won't be held up during logon as their system times out to look for a domain controller. The implementation of hibernation has been revamped for better performance. When the operating system hibernates, it informs device drivers to stop operations on their devices.

When the computer resumes, the operating system loader reads the contents of the hibernation file into memory and tells device drivers to restart their devices, after which the computer is back to the state it was in before the power-off.

The hibernation improvements come in several areas. The Power Manager compression algorithm, which it uses to compress the contents of memory before writing it to disk, has been improved to both run faster and obtain better compression ratios than in Windows Other changes help resume-from-standby and hibernation performance. For example, the resume code in NTLDR, the component that reads a hibernation file's contents into memory, has been streamlined to perform larger, more sequential reads.

When a system is running on battery DC power , the Power Manager automatically adjusts the processor's clock rate to accommodate the processing demands of applications, throttling back the speed during idle periods to save power. All versions of Windows except real-mode Windows 3x are demand-paged operating systems, where file data and code is faulted into memory from disk as an application attempts to access it.

Data and code is faulted in page-granular chunks where a page's size is dictated by the CPU's memory management hardware. A page is 4KB on the x Prefetching is the process of bringing data and code pages into memory from disk before it's demanded. In order to know what it should prefetch, the Windows XP Cache Manager monitors the page faults, both those that require that data be read from disk hard faults and those that simply require that data already in memory be added to a process's working set soft faults , that occur during the boot process and application startup.

By default it traces through the first two minutes of the boot process, 60 seconds following the time when all Win32 services have finished initializing, or 30 seconds following the start of the user's shell typically Microsoft Internet Explorer , whichever of these three events occurs first. The Cache Manager also monitors the first 10 seconds of application startup.

After collecting a trace that's organized into faults taken on the NTFS Master File Table MFT metadata file if the application accesses files or directories on NTFS volumes , the files referenced, and the directories referenced, it notifies the prefetch component of the Task Scheduler by signaling a named event object.

The Task Scheduler then performs a call to the internal NtQuerySystemInformation system call requesting the trace data. The file's name is the name of the application to which the trace applies followed by a dash and the hexadecimal representation of a hash of the file's path.

The file has a. Only after the Cache Manager has finished the boot trace the time of which was defined earlier does it collect page fault information for specific applications. When the system boots or an application starts, the Cache Manager is called to give it an opportunity to perform prefetching. The Cache Manager looks in the prefetch directory to see if a trace file exists for the prefetch scenario in question. If it does, the Cache Manager calls NTFS to prefetch any MFT metadata file references, reads in the contents of each of the directories referenced, and finally opens each file referenced.

It then calls the Memory Manager to read in any data and code specified in the trace that's not already in memory. The Memory Manager initiates all of the reads asynchronously and then waits for them to complete before letting an application's startup continue. How does this scheme provide a performance benefit? The answer lies in the fact that during typical system boot or application startup, the order of faults is such that some pages are brought in from one part of a file, then from another part of the same file, then pages are read from a different file, then perhaps from a directory, and so on.

This jumping around results in moving the heads around on the disk. Microsoft has learned through analysis that this slows boot and application startup times. By prefetching data from a file or directory all at once before accessing another one, this scattered seeking for data on the disk is greatly reduced or eliminated, thus improving the overall time for system and application startup. Figure 1 shows the contents of a prefetch directory, highlighting the layout file.

Then it launches the system defragmenter with a command-line option that tells the defragmenter to defragment based on the contents of the file instead of performing a full defrag. The defragmenter finds a contiguous area on each volume large enough to hold all the listed files and directories that reside on that volume and then moves them in their entirety into that area so that they are stored one after the other.

Thus, future prefetch operations will even be more efficient because all the data to be read in is now stored physically on the disk in the order it will be read. Since the number of files defragmented for prefetching is usually only in the hundreds, this defragmentation is much faster than full defragmentations. It runs on the new Intel Itanium processor at one time internal builds of Windows were running in native bit mode on the Compaq Alpha AXP processor, but this was never released.

To port Windows XP to Itanium was a major development effort. First, the architecture-specific code in the kernel, memory manager, and HAL had to be written from scratch. This includes support for trap dispatching, context switching, and the new three-level page table structure.

Then, thousands of changes were required to get the millions of lines of code that comprise Windows XP to compile and run properly using the native bit compiler and data types. However, the end result is a system that feels like its bit counterpart. In fact, there are virtually no visible differences to the user or administrator other than text on the system properties page and various system display utilities that report processor type, and the fact that the new Visual Styles, like the Luna theme, are not supported on bit Windows; only classic-style Windows is supported.

The most significant change is, of course, the fact that the virtual address space is huge compared to bit Windows. While 32 bits provides 4GB of address space, 64 bits means over 17 billion GB 16 exabytes of available address space. However, the way this address space is divided and laid out is quite different. Whereas bit Windows divides the address space in half—2GB for user processes and 2GB for system space—bit Windows provides GB to each user process.

Figure 2 bit Address Space Layout This larger virtual address space means applications can process vast amounts of data in a flat address space without resorting to mapping tricks like the AWE introduced in Windows that allow bit applications to utilize more than 2GB of memory.

Also, since the address space for the operating system is much larger, key system memory pools can be much larger now. This translates to the ability for the system to run more and bigger programs, load more and bigger device drivers, and cache more data.

These larger limits are detailed in Figure 3. Itanium runs firmware that's compliant with the new Extensible Firmware Interface EFI , a specification that is maintained by a consortium of companies. For example, all disk offsets in the partition table are bit instead of bit quantities, and the partition table information is mirrored at the start and end of a disk.

Furthermore, there's no nesting of partitions as is required in MBR partitioning when there are more than four partitions on a disk. Just as with the bit version of the OS, the bit edition can be configured to make the Logical Disk Manager LDM service manage a disk's partition so that you can define multipartition volumes volume sets, RAID-5, and so on. LDM preserves the original partitioning scheme MBR or GPT , but internally manages all the space on a disk not included in the boot partition or the partition table information, thereby creating soft partitions as opposed to hard partitions defined by the disks main partitioning format.

Interestingly, the Compaq Alpha processor's firmware was programmed to understand the relatively simple FAT file system format, which meant that at least one partition on the Alpha boot disk had to be formatted as FAT. Windows was already a reliable platform. Windows XP builds on that foundation by adding a number of significant recovery capabilities and reliability improvements such as System Restore, Driver Rollback, Volume Shadow Copy, a more reliable service infrastructure, and new Driver Verifier options.

We'll describe these options in detail. System Restore, which originally appeared in a more rudimentary form in Windows Me, provides a way to restore the system to a previously known state that would otherwise require you to reinstall an application or even the entire operating system. For example, if you install one or more applications or make other system file or registry changes that cause applications to fail, you can use System Restore to revert the system files and the Registry to the state it had before the change occurred.

System Restore is especially useful when you install an application that makes changes that you would like to undo. Setup applications that are compatible with Windows XP integrate with System Restore to create a restore point before an installation begins.

The service's role is to both automatically create restore points and to export an API so that other applications—such as setup programs—can manually initiate restore point creation. By default, the service creates a restore point every 24 hours while the system is up, and when the system is off or running on batteries when automated restore points creation is disabled , it tries to ensure that the latest restore point is no older than 24 hours.

The restore directory contains restore-point subdirectories having names in the form RPn, where n is a restore point's unique identifier. Files that make up a restore point's initial snapshot are stored under a restore point's Snapshot directory. Backup files copied by the System Restore driver are given unique names such as A A restore point can have multiple change logs, each having a name like change.

N , where N is a unique change log ID. A change log contains records that store enough information regarding a change to a file or directory so that the change can be undone. For example, if a file was deleted, the change log entry for that operation would store the copy's name in the restore point A The System Restore service starts a new change log when a current one grows larger than 1MB or a certain time has passed.

Figure 4 depicts the flow of file system requests as the System Restore driver updates a restore point in response to modifications. Figure 4 Flow of File System Request Figure 5 shows a screenshot of a System Restore directory, which includes several restore point subdirectories, as well as the contents of the subdirectory corresponding to restore point 5. To see this folder, open an instance of the command prompt running under the Local System account by using the "at" command to run cmd.

For example, you wouldn't want an important Microsoft Word document to be deleted just because you rolled back the system to correct an application configuration problem. When the process is complete, the boot continues. Besides making restores safer, the reboot is necessary to activate restored Registry hives.

Developers should examine the file extensions that their applications use in light of System Restore. Files that store user data should not have extensions matching those protected by System Restore, because otherwise users could lose data when rolling back to a restore point.

Another area where Microsoft has added a recovery capability to improve system reliability is in driver installation. To protect you from the situation where you install a third-party vendor's driver update that introduces problems, the Hardware Installation Wizard HIW keeps backup copies of replaced drivers. If you update the same driver again, the HIW will create a new backup and delete the previous one, thus keeping only the most recent backup.

A driver's property page in the Device Manager has a button that lets you roll back the driver to the previous version, as seen in Figure 6. It has been integrated with the HIW to make recovery even more likely.

One of the most common uses for Last Known Good is to return a system to a bootable state after you've installed a driver that prevents the system from booting successfully—the previous copy of the CurrentControlSet won't have the Registry settings that enable the new driver.

Windows XP has the same driver-signing policy support as Windows where you can configure the system to warn you about, prevent, or silently allow the installation of device drivers that haven't been signed by Microsoft and therefore haven't passed Microsoft driver testing.

Windows XP adds to this a new feature called Driver Protection, which consists of a database of drivers that are known to crash systems. A limitation of many backup utilities relates to open files.