So… for reasons unbeknowning to mankind, trying to find the path where you can store your ISO’s on XenServer is amazingly difficult. After trying various combos on google and Citrix’s own site, I eventually found a site pointing it out: http://www.tillett.info/2009/09/23/adding-iso-repository-under-xenserver-5-5/

The path is at: /var/opt/xen/iso_import

BTW, slocate isn’t installed and when I tried using find, that path didn’t pop up… probably because I was searching for XenServer.iso thinking it would work in the same folder…

Also check here: http://docs.vmd.citrix.com/XenServer/5.0.0/1.0/en_gb/guest.html#iso_windows-where_to_put_it