> * From: ISHWAR RATTAN <rattan@cps.cmich.edu> >I have a 1Gb primary swap partition (/dev/sda1) >and fdisk -l shows that. fdisk read the partition table from the disk, but the kernel data can be seen in /proc/partitions (it is read at boot time) > # swapon /dev/sda1 >says that ..:/dev/sda1: is invalid argument. what about file -s /dev/sda1 ? If "grep sda1 /proc/partitions" shows the expected result, try mkswap /dev/sda1 before swapon /dev/sda1