Unable to Install Centos 7.7.1908 with RAID1 on 400GB SSDs: "sdb may not have enough space for grub 2 to embed core.img when using the xfs"

keennay · 11-28-2019, 04:22 PM

Quote:

sdb may not have enough space for grub 2 to embed core.img when using the xfs file system on mdarray

The above is the error I receive when attempting to install Centos 7.7.1908 from a USB drive (BIOS boot) onto two 400GB SAS SSDs and configure the boot, root, and swap directories as RAID1. The target device is a Dell PowerEdge 720 at my physical location.

I however do not see this problem when attempting to install on 1.92TB SSDs laying around, though I only have a few of those and more of the 400GB SSDs. At first I thought this was a problem with my disk capacity, but here is one YouTube video where the uploader had no issues setting up the OS in a RAID 1 setup with 20GB drives:

https://youtu.be/NaLDbO4DZ30

Here's my screen:

colorpurple21859 · 11-28-2019, 06:13 PM

If the drives are gpt type label a 1mb bios-grub partition is needed to allow grub to be installed in bios mode to a gpt type disks.