lets say you have no gui installed on linux (centos 5.4) just server applications running and you want to boot an iso but you dont have a working cdrom, after the iso is mounted how would you execute/boot it?

I dont think you can boot it that way...?

However; you can boot the iso from a ext2/ext3 partition

you will have to extract it to a partition; even inside a installed Linux system

Then, you must edit your Grub menu.lst

I can help you there

But, what Linux iso are you trying to boot???

Do you want your computer to boot an iso at startup or you want to mount an iso with the command line?

ISO is already mounted just not sure how I would run it

11/12/2009 08:25 PM 2,573 README.txt
11/12/2009 08:26 PM 2,048 boot.cat
11/12/2009 08:25 PM 12,803,935 cim.vgz
11/12/2009 08:25 PM 1,151,063 cimstg.tgz
11/12/2009 08:26 PM <DIR> cisco_n1k
11/12/2009 08:25 PM 5,824,059 ienviron.tgz
11/12/2009 08:26 PM 299,088,928 image.tgz
11/12/2009 08:26 PM 21,585 install.tgz
11/12/2009 08:26 PM 12,241 isolinux.bin
11/12/2009 08:26 PM 312 isolinux.cfg
11/12/2009 08:26 PM 47,404 mboot.c32
11/12/2009 08:26 PM 35,916 menu.c32
11/12/2009 08:26 PM 47,161,000 sys.vgz
11/12/2009 08:26 PM 16,919 vmkboot.gz
11/12/2009 08:26 PM 2,059,186 vmkernel.gz

Please post the isolinux.cfg
you will have to boot from the extracted iso off hard drive

I need to know if you still have a grub menu.lst also??

i have no access to the system so if it requires it, this will answer my question then. I'm wanting to install ESXi

default menu.c32
menu title VMware VMvisor Boot Menu
timeout 80

label ESXi Installer
menu label ^ESXi Installer
kernel mboot.c32
append vmkboot.gz --- vmkernel.gz --- sys.vgz --- cim.vgz --- ienviron.tgz --- image.tgz --- install.tgz

label ^Boot from local disk
menu label ^Boot from local disk
localboot 0x80