/boot 84% Full

Now getting an email - The file system /dev/sda1, which is mounted at /boot, has reached warn status because it is 83% full. I just recently updated the kernel. When i got to /boot and ls I get this... dr-xr-xr-x. 5 root root 2048 Nov 7 11:25 ./ drwxr-xr-x. 22 root root 4096 Nov 7 11:25 ../ -rw-r--r--. 1 root root 101820 Jun 22 2012 config-2.6.32-279.el6.x86_64 -rw-r--r-- 1 root root 104085 Mar 12 2013 config-2.6.32-358.2.1.el6.x86_64 -rw-r--r-- 1 root root 104112 Oct 16 15:01 config-2.6.32-358.23.2.el6.x86_64 drwxr-xr-x. 3 root root 1024 Mar 20 2013 efi/ drwxr-xr-x. 2 root root 1024 Nov 7 11:21 grub/ -rw-r--r--. 1 root root 15867109 Mar 20 2013 initramfs-2.6.32-279.el6.x86_64.img -rw-r--r-- 1 root root 16200883 Mar 20 2013 initramfs-2.6.32-358.2.1.el6.x86_64.img -rw-r--r-- 1 root root 16268259 Nov 7 11:21 initramfs-2.6.32-358.23.2.el6.x86_64.img -rw------- 1 root root 3546235 Mar 20 2013 initrd-2.6.32-279.el6.x86_64kdump.img -rw------- 1 root root 3703807 Jun 6 03:01 initrd-2.6.32-358.2.1.el6.x86_64kdump.img -rw------- 1 root root 3705147 Nov 7 11:25 initrd-2.6.32-358.23.2.el6.x86_64kdump.img drwx------. 2 root root 12288 Mar 20 2013 lost+found/ -rw-r--r--. 1 root root 179157 Jun 22 2012 symvers-2.6.32-279.el6.x86_64.gz -rw-r--r-- 1 root root 185828 Mar 12 2013 symvers-2.6.32-358.2.1.el6.x86_64.gz -rw-r--r-- 1 root root 185978 Oct 16 15:02 symvers-2.6.32-358.23.2.el6.x86_64.gz -rw-r--r--. 1 root root 2341856 Jun 22 2012 System.map-2.6.32-279.el6.x86_64 -rw-r--r-- 1 root root 2407544 Mar 12 2013 System.map-2.6.32-358.2.1.el6.x86_64 -rw-r--r-- 1 root root 2408974 Oct 16 15:01 System.map-2.6.32-358.23.2.el6.x86_64 -rwxr-xr-x. 1 root root 3986608 Jun 22 2012 vmlinuz-2.6.32-279.el6.x86_64* -rw-r--r--. 1 root root 166 Jun 22 2012 .vmlinuz-2.6.32-279.el6.x86_64.hmac -rwxr-xr-x 1 root root 4043920 Mar 12 2013 vmlinuz-2.6.32-358.2.1.el6.x86_64* -rw-r--r-- 1 root root 170 Mar 12 2013 .vmlinuz-2.6.32-358.2.1.el6.x86_64.hmac -rwxr-xr-x 1 root root 4047152 Oct 16 15:01 vmlinuz-2.6.32-358.23.2.el6.x86_64* -rw-r--r-- 1 root root 171 Oct 16 15:01 .vmlinuz-2.6.32-358.23.2.el6.x86_64.hmac It looks to me like there are three different sets of files from upgrades present. Is it safe for me to simply delete anything related to these *2.6.32-279.el6.x86_64* and *2.6.32-358.2.1.el6.x86_64* Thanks! [COLOR="silver">- - - Updated - - - Just found this. Will the steps here take care of the issue for me safely? http://www.if-not-true-then-false.com/2012/delete-remove-old-kernels-on-fedora-centos-red-hat-rhel/