Windows 2000 system files

So the performance of the MFT is essential to the performance of the entire volume. By default, this buffer zone uses approximately Although this allocation usually minimizes MFT fragmentation, sometimes the buffer zone isn't adequate. The default value is 1, possible values are 1 to 4 1 reserves The modification affects only those volumes created after you create this Registry entry-the modification doesn't change existing NTFS volumes, which retain their original MFT zone reservations.

Also, allocating more space for the MFT won't limit the amount of free disk space available for regular file storage, because NTFS will use the MFT zone if the normal user file area becomes full, which can thus be another reason why the MFT becomes fragmented. If any of the catalog files are missing or damaged, WFP renames the affected catalog file and retrieves a cached version of that file from the cache folder.

If a cached copy of the catalog file is not available in the cache folder, the WFP feature requests the appropriate media to retrieve a new copy of the catalog file. The System File Checker tool gives an administrator the ability to scan all the protected files to verify their versions. The SfcScan value in the following registry key has three possible settings:. Default value. By default, all system files are cached in the cache folder, and the default size of the cache is MB.

Because of disk space considerations, it may not be desirable to maintain cached versions of all system files in the cache folder. To change the size of the cache, change the setting of the SFCQuota value in the following registry key:.

The administrator can make the setting for the SFCQuota value as large or small as needed. There are two cases in which the cache folder may not contain copies of all protected files, regardless of the SFCQuota value:. Not enough disk space. Network Install. Additionally, all drivers in the Driver. WFP can restore these files from the Driver. If WFP detects a file change and the affected file is not in the cache folder, WFP examines the version of the changed file that the operating system is currently using.

If the file that is currently in use is the correct version, WFP copies that version of the file to the cache folder. If the file that is currently in use is not the correct version, or if the file is not cached in the cache folder, WFP tries to locate the installation source. If WFP cannot find the installation source, WFP prompts an administrator to insert the appropriate media to replace the file or the cached file version.

To modify the cache location, you must add this value. The Setup. If the file is missing or corrupt, you are prompted to replace it. Inspect Boot Sector repairs the active system partition boot sector and reinstalls the boot loader. If a hive is replaced, your system has some updated hives and some original hives. You must do one of the following: 1. Restore the System State.

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Microsoft has a Win registry repair tool that you can try. See link below. If you need to recover data, install a second copy on hard disk and transfer data.

Recommend that you then reformat hard drive and start afresh. A repair installation won't repair the registry. Repair installation uses existing registry. What I have seen in cases where registry is corrupt, repair installation fails. OK, thats not good. You have deleted a registry hive. You should never replace only one perty of the registry.

Many registry keys are really sub-keys in another key. So, since there is a connectivity if you replace one the replace all to maintain that unity.