Hi, I have gone thought he painful operation of registering just to edit one page then I found out i have to also get on this mailing list to get permission... Why can't the wiki page display that I have no permission to edit? and also why can't edits be sent to a moderation queue for approval? Anyways this is my request to edit http://wiki.centos.org/HowTos/Disk_Optimization page as it has a obvious error. I recently became aware of a error on the http://wiki.centos.org/HowTos/Disk_Optimization page. The stride is calculated for the one spindle not the group. For that example it is 64K / 4K = a stride of 16, also the stride width is not the 4 disks in raid 5 as one is the checksum so it's 3 * stride = width 48, so the command would be mkfs.ext3 -b 4096 -E stride=16 -E stripe-width=48 -O dir_index /dev/XXXX If you would like to see some creditability as to what I can do see http://crux.nu my alias is Romster i am a contrib maintainer, I contribute time to #winehq and #lvm I am also working on my own distro flavor http://shortcircuit.net.au/~romster/hvl.xhtml Kind regards, Danny Rawlins