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This article mainly explains "what to do with no usable disks have been foun when booting a virtual machine from an ISO image". The explanation in the article is simple and clear and easy to learn and understand. please follow the editor's train of thought to study and learn how to "no usable disks have been foun" when starting a virtual machine from an ISO image.

[problem phenomenon] through the Openstack interface, try the image centos6.5 minimal ISO image to generate a virtual machine instance. The type of CVM is m1.little. Install OS after the virtual machine is powered on, and prompt "no usbale disks have been found".

[cause of the problem]

The resource configuration of CVM type m1.little is as follows:

| | ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public | | a2895ca4-de0c-4dac-8ea1-7c7279b74b87 | m1.little | 1024 | 20 | 0 | 1 | 1.0 | True | |

When the virtual is started from the iso image, openstack will use the qcow image file generated by the root disk size as the cdrom device as the startup source to install OS, rather than as the disk device to install OS, resulting in the disk "no usable disks have been foudn" cannot be found during OS installation.

[solution]

To set a dedicated iso CVM type, you must set a temporary disk size, as shown below

| | ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public | | b11eb720-6167-41f6-b7f2-668174478df0 | m1.medium | 4096 | 40 | 60 | 2 | 1.0 | True |

When using ISO images to generate virtual machines, select the CVM type as the configuration template

Thank you for your reading, the above is the content of "what to do with no usable disks have been foun" when booting a virtual machine from an ISO image. After the study of this article, I believe you have a deeper understanding of how to prompt "no usable disks have been foun" when starting a virtual machine from an ISO image, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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