Configure the read-ahead cache for cdrom/dvd drives
If you feel that you need more cache than what is recommended for a 4x CDROM then you should try this.
This is done in the registry with the following values :
[HKEY_LOCAL_MACHINE \System \CurrentControlSet \control \FileSystem \CDFS]
CacheSize = 619 (The Default)
Prefetch = 228 (The Default for for 4x)
- CacheSize - The amount of 2 KByte pages used for caching
- Prefetch - The read ahead buffer which is depending on drive speed
It is possible that the values can be saved in both DWORD and BINARY, you keep the value-type which you have already when setting these values:
| CacheSize | Memory | Decimal | Binary | DWORD |
|---|---|---|---|---|
| Default | 1238 KB | 619 | 6b,02,00,00 | 0000026b |
| Medium | 2476 KB | 1238 | d6,04,00,00 | 000004d6 |
| Large | 4952 KB | 2476 | ac,09.00,00 | 000009ac |
| Prefetch | Decimal | Binary | DWORD |
|---|---|---|---|
| 4x (Default) | 228 | e4,00,00,00 | 000000e4 |
| 8x | 448 | c0,01,00,00 | 000001c0 |
| 16x | 896 | 80,03,00,00 | 00000380 |
| 32X | 1792 | 00,07,00,00 | 00000700 |