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In this section, you find registry information pertaining to hardware peripherals, such as network adapters, disk controllers, and CD-ROMs. I try to provide as specific information as possible for different brands of peripherals.
II-1 If you get an error message stating that the ring buffer of your mouse overflowed, you may want to increase the size of the ring buffer. Change this registry entry.
Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\Sermouse\Parameters |
Value Name: | MouseDataQueSize |
Data Type: | REG_DWORD |
Value: | 0x64 |
The default is 0x64; increase this value to increase the size of the buffer. Reboot for this change to take effect.
II-2 If you get an error message stating that the ring buffer of your keyboard overflowed, you might want to increase the size of the ring buffer. Change this registry entry.
Hive: | HKEY_LOCAL_MACHINE |
Key: | System\CurrentControlSet\Services\KbdClass\Parameters |
Value Name: | KeyboardDataQueSize |
Data Type: | REG_DWORD |
Value: | 0x64 |
The default is 0x64; increase this value to increase the size of the buffer. Reboot for this change to take effect.
II-3 NT 4.0 uses the unimodem protocol to recognize modems. If you have an old modem that isnt unimodem-compliant and you want NT to use Modem.inf to set the parameters, change this entry.
Hive: | HKEY_LOCAL_MACHINE |
Key: | Software\Microsoft\RAS\Protocols |
Add the following value under the Protocols key:
Value Name: | EnableUnimodem |
Data Type: | REG_DWORD |
Value: | 0 |
II-4 If you need to find the firmware revision on your hard drive without physically removing it, these registry entries show you how.
Hive: | HKEY_LOCAL_MACHINE |
Key: | Hardware\DeviceMap\SCSI\ScsiPort0\TargetId0\ LogicalUnitId0 |
Value Name: | Identifier |
Data Type: | REG_SZ |
Value: | Quantum Fireball_TM3 A6B |
II-5 | Value Name: | Type |
Data Type: | REG_SZ | |
Value: | DiskPeripheral |
These two entries control the first SCSI peripheral, or in this example, an IDE Quantum Fireball drive. Even though the Fireball is an IDE device, you can look at these keys to obtain the information. Note the Type value, which provides extra verification that you are indeed looking at the right peripheral.
II-6 | Hive: | HKEY_LOCAL_MACHINE |
Key: | Hardware\DeviceMap\SCSI\ScsiPort1\TargetId0\ LogicalUnitId0 | |
Value Name: | Identifier | |
Data Type: | REG_SZ | |
Value: | Toshiba CD-ROM XM-5702B 2826 |
II-7 | Value Name: | Type |
Data Type: | REG_SZ | |
Value: | CdRomPeripheral |
These two entries control the second SCSI peripheral, or in this case, an IDE Toshiba 12 X CD-ROM. Again, note the Type value, which provides extra verification that you are indeed looking at the correct peripheral.
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