i look at /proc/sys/kernel/sg-big-buff i saw 32768 is this the size of the buffer for scsi device ? i recompiled the kernel with a modified /usr/src/linux/include/scsi/sg.h to put 256kb of buff (kernel 2.2.6) where is the buff size ? thanks Xavier ______________________________ xavier@bocal.cs.univ-paris8.fr