[CentOS] sdl not useable / are there any limits number of harddisks?

Thu Feb 3 06:23:06 UTC 2022
Ralf Prengel <ralf.prengel at rprengel.de>

I ve a system with disks sda to sdk runing as a nexus repo for docker  
an d kubernetes.
Every repo-type has an own disk
Everything is working fine.
The problem:

A new disk sdl can t be uses. fdisk doesn t recocnize the disk. Same  
problem using parted.
The hardware (a vm) is ok because
booting gparted from a iso gives me full acches
while booting sdl is shown

Centos 7 is in use.

Thanks for hints