# Revision history [back]

### How to boot ISO of older Linux?

From my understanding, the older version of Linux, before 2.6.25, does not come with virtio, for example CentOS 5. So, the ISO can not boot in Nova directly.

I have created a glance image from the ISO, and used it in the boot.

I have tried to specify bus=ide, in nova boot, however, still got "No bootable device".

This is the command I tried:

nova boot --block-device source=image,dest=volume,id=<image-id>,bus=ide,size=<size>,shutdown=remove,bootindex=0 --flavor <flavor-name> --nic net-id=<net-id> <instance-name>

Did I do something wrong? Is it supposed to work? Thanks!

 2 No.2 Revision rbowen 761 ●3 ●12 ●21 http://openstack.redha...

### How to boot ISO of older Linux?

From my understanding, the older version of Linux, before 2.6.25, does not come with virtio, for example CentOS 5. So, the ISO can not boot in Nova directly.

I have created a glance image from the ISO, and used it in the boot.

I have tried to specify bus=ide, in nova boot, however, still got "No bootable device".

This is the command I tried:

nova boot --block-device source=image,dest=volume,id=<image-id>,bus=ide,size=<size>,shutdown=remove,bootindex=0 --flavor <flavor-name> --nic net-id=<net-id> <instance-name><instance-name>


Did I do something wrong? Is it supposed to work? Thanks!