In Windows NT 4.0, disk counters were off by default, and had to be enabled type typing
diskperf -y.
In Windows 2000, physical disk counters are enabled by default, but logical disk objects are disabled, until you type diskperf -yv
The syntax of the diskperf command is:
diskperf \[-Y\[D|V\] | -N\[D|V\]\] \[\\computername\]
Where: -Y Sets the system to start all disk performance counters. -YD Enables the disk performance counters for physical drives. -YV Enables the disk performance counters for logical drives or storage volumes. -N Sets the system to disable all disk performance counters. -ND Disables the disk performance counters for physical drives. -NV Disables the disk performance counters for logical drives. \\computername Is the name of a remote computer.NOTE: All enabling actions require a restart.
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