zxing qr code writer example c# Troubleshooting Hardware, Driver, and Disk Issues in Visual C#

Generator QR Code ISO/IEC18004 in Visual C# Troubleshooting Hardware, Driver, and Disk Issues

Stage 3: ChkDsk verifies the security descriptors for each volume During stage 3, ChkDsk examines each of the security descriptors associated with each file and directory on the volume by verifying that each security descriptor structure is well formed and internally consistent . The percentage complete that ChkDsk displays during this phase is the percentage of the number of files and directories on the volume that are checked . The percentage complete indicator advances relatively smoothly throughout this phase, although some unevenness might occur .

Stage 4: ChkDsk verifies file data During stage 4 (which is optional), ChkDsk verifies all clusters in use . ChkDsk performs stages 4 and 5 if you specify the /r parameter when you run ChkDsk . The /r parameter confirms that the sectors in each cluster are usable . Specifying the /r parameter is usually not necessary, because NTFS identifies and remaps bad sectors during the course of normal operations, but you can use the /r parameter if you suspect the disk has bad sectors . The percentage complete that ChkDsk displays during stage 4 is based on the percentage of used clusters that are checked . Used clusters typically take longer to check than unused clusters, so stage 4 lasts longer than stage 5 on a volume with equal numbers of used and unused clusters . For a volume with mostly unused clusters, stage 5 takes longer than stage 4 .

Stage 5: ChkDsk verifies free space During stage 5 (which is optional), ChkDsk verifies unused clusters . ChkDsk performs stage 5 only if you specify the /r parameter when you run ChkDsk . The percentage complete that ChkDsk displays during stage 5 is the percentage of unused clusters that are checked .

With Disk Cleanup (Cleanmgr .exe), you can delete unneeded files and compress infrequently accessed files . This tool is primarily useful for resolving problems that might be related to a shortage of disk space . Insufficient free disk space can cause many problems, ranging from Stop errors to file corruption . To increase free space, you can do the following:

Move files to another volume or archive them to backup media . Compress files or disks to reduce the space required to store data . Delete unneeded files .

To run Disk Cleanup, follow these steps:

1. 2. 3. 4.

Click Start and then click Computer . Right-click the drive you want to clean and then select Properties . On the General tab of the Properties dialog box, click Disk Cleanup . If prompted, click either My Files Only or Files From All Users On This Computer . On the Disk Cleanup tab, select the files to delete and then click OK .

Windows Vista is the first Windows operating system to support caching hard disk data to a nonvolatile cache on hard disks with the required cache . Windows Vista and Windows 7 can use the cache to improve startup performance, improve the performance of frequently modified system data, and reduce utilization . In rare circumstances, the failing nonvolatile cache might cause problems . To eliminate the possibility that the nonvolatile cache is causing problems, you can disable different cache functionality using the following Group Policy settings (located in Computer Configuration\Administrative Templates\System\Disk NV Cache):

Turn Off Boot And Resume Optimizations Enable this policy to prevent Windows from using the nonvolatile cache to speed startup times . Turn Off Cache Power Mode Enable this policy to prevent Windows from putting disks into a nonvolatile cache power-saving mode, which enables the hard disk to spin down while continuing to use the nonvolatile cache . Turn Off Non Volatile Cache Feature use of the nonvolatile cache . Enable this policy to completely disable all

Turn Off Solid State Mode Enable this policy to prevent frequently written files such as the system metadata and registry from being stored in the nonvolatile cache .