The Dblbuff.sys device driver is used to perform double buffering which is required to provide compatibility for certain hard-disk controllers that cannot work with memory provided by EMM386 or Windows running in 386 Enhanced mode.
DEVICE=[path] DBLBUFF.SYS [/D+]
DEVICEHIGH=[path] DBLBUFF.SYS [/D+]
||The full path. Default is the root directory of the start-up drive (usually C:/)|
||Instructs Dblbuff.sys to double-buffer all disk I/O all the time. By default, it will only double-buffer I/O to UMBs, and it will automatically stop double-buffering if it appears to be unnecessary.|
If Windows Setup determined that your system may need double-buffering, it will add a DoubleBuffer=1 entry to the [Options] section of Msdos.sys, which will automatically load Dblbuff.sys. To manually enable double-buffering, the above entry can be added to Msdos.sys or the device driver can be loaded in Config.sys using Device/DeviceHigh.
To enable double buffering by loading the Dblbuff.sys device driver into upper memory:
|File Name||Default Location||Dos Ver.||Win Ver.||Size||Date||Source|
Superscripts denote which same size files, if any, are identical (using FC).