Hi all,

We recently received a Dell Precision T7910 machine. We intended to make a fresh install of Ubuntu Server Edition. However, we got into some issue with the detection of the HDD at boot. I would like to add that all the installation processes were performed with the following BIOS parameters: UEFI boot, SecureBoot off, compatibility Legacy ON, RAID0 off. We also reseat the disks several time between the different install.

We needed to have RAID1 with 2 HDDs (system file '/') + 2 HDDs (some data '/data'). We intended to install Ubuntu Server 12.04.5 LTS, since that it should be for sure supported. However, during the installation, the partition tool do not find the HDD.

Thus we tried the same install with a Ubuntu Server 15.04 in which the disk have been detected and the install went more smoothly. However, we got an issue at the rebooting with 'Alert! No Hard Drive found'

To be sure, that it was not a problem of RAID, we install Ubuntu Server 15.04 only on a single HDD without any RAID. No issue in the install but same result at boot. Checking the bios, in boot sequence, 'ubuntu' item is present as UEFI sequence.

To ensure that the issue was not the version, we install Ubuntu Server 14.04.3 LTS and same results.

I would like to know if anybody has experience equivalent scenario. I do not get why the HDDs are detected in the version 12.04.5 LTS and detected in the latter version. Then, is there is any firmware or specific BIOS version to install to get Ubuntu work?

Also I am wondering to know why only ubuntu 12.04 LTS is officialy supported for a such recent computer made of common piece of hardware.

Hope to find a resolution at these problems.

--

Guillaume Lemaitre