R660 does not see SSD as boot disk

Hello,

please can you give me the specification of the SSD drive? It is a 4k disk?

Thanks

Hi Marco,

Here is the spec of that drive - how can I tell if it's 4k, and how does it affect this?

480GB SSD SATA Mix Use 6Gbps 5 12 2.5in Hot-plug AG Drive, 3 DWPD 400-AZUT

Thanks!

Hello, this may help:

J3X0J   Intel Youngsville S4600 MU 480GB SSD SATA6 2.5 512e ISE Model  

Respectfully,

I should have mentioned in my first thread - that the Linux OS kickstart installation was done via a BIOS (non-UEFI) with PXE boot, upon the kickstart completion I checked the disk partition was pre-configured correctly - I can also see all the disk devices via fdisk, lsblk command & /dev/disk/* paths.

Upon rebooting, it's just not showing a HDD boot device, even though I then changed it from BIOS to EFI boot mode, is there anything extra I need to do or missing out? 

This model is not a 4kn drive. I asked this because you cannot boot from a 4kn drive.

One question, is the BIOS up to date?

And did you check here for R660 boot mode?

Dell PowerEdge R660 Installation and Service Manual | Dell US

System BIOS version: 1.5.6

System Management Engine Version: 6.0.5.13

SATA setting is already set to AHCI mode as well.

BIOS looks like up-to-date I believe, and yes - I did find that boot mode menu, but I am just not seeing the SSD (which is RAID0) listed. The screenshot above only shows the placeholder for EFI RAID disk but they're both not bootable. Why is it not picking up the SSD RAID0 disk? 

Hello, what is the exact name and the version of the OS you are using? The R660 is relatively recent model and I'm thinking it might be the case where your server model does not support the OS.

Respectfully, 

It is Rocky Linux 9. In fact I could install the same OS version on 2 other older R630 boxes, which could see the SSD hard drive during boot just fine. Having problem only on this newer R660.

Hello, that's a free OS and Dell has never officially tested and published whether if that is going to work or not. We can not guarantee the outcome sorry I can't be of help this time.
Respectfully,

@DELL-Young E​ Well, I seem to have the exact same issue and I run RHEL9.  The issue does not seem to be the OS, it is switching from BIOS to UEFI mode on an installed OS.

I run a PE R660 with H755 frontside raid controller with 2 - 960 GB SSD in a RAID 1 configuration.  When in UEFI mode, the SSDs are seen but not bootable.

The issue is due to the original partition table of the disk.  Specifically the partition table is MSDOS and not GPT.  UEFI needs a GPT partition table.  There are tutorials on moving your partitions around on the disk and freeing up room in the low blocks of your disk for a GPT table.