Hi Robert , First off all , thank you very much for your step by steb info. The below command creates a 1 GB file. there you have mentioned bs=1G count=1. What is count 1 there? > # Create the file: > [root@beauregard ~]# dd if=/dev/zero of=/root/swapfile bs=1G count=1 > 1+0 records in > 1+0 records out > 1073741824 bytes (1.1 GB) copied, 119.248 s, 9.0 MB/s > #Make the swap fs on the file: If I want to create a file with 2 GB , then , What should I mention? count 2 or 1? What is the correct one out of below 2 commands dd if=/dev/zero of=/root/swapfile bs=2G count=2 or dd if=/dev/zero of=/root/swapfile bs=2G count=1 Hope to hear form you. > > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos > -- Thank you Indunil Jayasooriya _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos