Re: [CentOS] Boot failed on latest CentOS 7 update

2020-08-03 Thread Jyrki Tikka
On 2020-08-03 05:56, John Pierce wrote: Legacy BIOS has its own set of issues, like no GPT support, MBR disks are max 2TB. I'm booting just fine on an old BIOS system from a pair (mdraid 1) of 3 TB GPT disks. The MBR compatibility on GPT disks allow the old machine to boot from a GPT disk an

[CentOS] NFSroot over wifi in CentOS 7 - graceful shutdown problem

2020-08-03 Thread Dmitry E. Mikhailov
Hi, I've got a task to have a small number of laptops netboot Linux over WiFi. The kernel is loaded off the USB stick of cource, it's off topic for now. The WPA-supplicant daemon is started early by dracut off initrd. It works. Mostly. The problem is that upon shutdown systemd terminates a

Re: [CentOS] NFSroot over wifi in CentOS 7 - graceful shutdown problem

2020-08-03 Thread Simon Matter via CentOS
> Hi, > > I've got a task to have a small number of laptops netboot Linux over > WiFi. The kernel is loaded off the USB stick of cource, it's off topic > for now. > > The WPA-supplicant daemon is started early by dracut off initrd. It > works. Mostly. > > The problem is that upon shutdown systemd t

Re: [CentOS] 8.2.2004 Latest yum update renders machine unbootable

2020-08-03 Thread Johnny Hughes
On 8/2/20 7:51 PM, Pete Biggs wrote: > >> >> You just need to reinstall the kernel and it should work. >> >> > Is it possible to bump the kernel version number to make sure the > kernel gets re-installed on automated installs? Or would this break > the compatibility with RHEL? > Well .. It woul

Re: [CentOS] Boot failed on latest CentOS 7 update

2020-08-03 Thread Gordon Messmer
On 8/3/20 2:21 AM, Jyrki Tikka wrote: The boot disks must have an EFI boot partition even though it's not used in this case. IIRC, they need a partition at the beginning of the drive to reserve space for GRUB2.  That should be a "BIOS boot partition" not an "EFI System partition" for GRUB2.

Re: [CentOS] Boot failed on latest CentOS 7 update

2020-08-03 Thread Jyrki Tikka
On 2020-08-03 18:43, Gordon Messmer wrote: On 8/3/20 2:21 AM, Jyrki Tikka wrote: The boot disks must have an EFI boot partition even though it's not used in this case. IIRC, they need a partition at the beginning of the drive to reserve space for GRUB2.  That should be a "BIOS boot partition"

[CentOS] Fixing grub/shim issue Centos 7

2020-08-03 Thread david
After trying several paths, some suggested on this list, here's my results. 1) Fixing a unbootable system wasn't practical in my case. Fortunately, all my systems can be rebuilt from scratch. 2) When I was lucky enough to catch an updated system before reboot, backing out the defective updat

Re: [CentOS] Fixing grub/shim issue Centos 7

2020-08-03 Thread Nicolas Kovacs
Le 03/08/2020 à 19:24, david a écrit : > After trying several paths, some suggested on this list, here's my results. Hi, Just back from a hiking trip. One of my clients sent me a message that his CentOS server refuses to boot. So tomorrow I have to drive there to figure out what's going on. I gue

Re: [CentOS] Fixing grub/shim issue Centos 7

2020-08-03 Thread lpeci
Hi all, I had the same problem with my UEFI bios machine and I fixed it so for Centos 7: 1) Boot from an rescue linux usb 2) When the rescue system is running:     2.1) #chroot /mnt/sysimage 3) Config network:     3.1) # ip addr add X.X.X.X/X dev X     3.2) # ip route add default via X.X.

Re: [CentOS] Fixing grub/shim issue Centos 7

2020-08-03 Thread Marc Balmer via CentOS
> Am 04.08.2020 um 08:31 schrieb lpeci : > > Hi all, > > I had the same problem with my UEFI bios machine and I fixed it so for Centos > 7: > > 1) Boot from an rescue linux usb > > 2) When the rescue system is running: > > 2.1) #chroot /mnt/sysimage > > 3) Config network: > > 3.1