search for: grub_disable_recovery

Hello List, I'm ironing out details to upgrade a few systems to CentOS7. My servers have BMC with Serial over LAN support. In C5 and C6, I determined how to have BIOS/POST, kernel, and serial console access. I'm reading up on the method to accomplish the pieces with C7. Presently SoL output works, so I see BIOS/POST messages and the GRUB boot list. My changes to enable serial

...g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=centos_amandine/root \ rd.lvm.lv=centos_amandine/swap \ video=1024x768 \ quiet" GRUB_DISABLE_RECOVERY="true" According to the official documentation, pressing any alphanumerical key just after the BIOS screen will make the GRUB menu appear. I tried that, but to no avail. Any idea what's the magic combination to make the GRUB boot menu appear when GRUB_TIMEOUT is set to 0? Cheers,...

...~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rd.shell rhgb" GRUB_DISABLE_RECOVERY="true"

...al --unit=0 --speed=9600 --word=8 --parity=no --stop=1" GRUB_TERMINAL_OUTPUT="console serial" GRUB_CMDLINE_LINUX="rd.md.uuid=long-uuid-string crashkernel=auto rd.lvm.lv=vg/swap rd.lvm.lv=vg/root rd.md.uuid=another-long-uuid console=tty0 console=ttyS0,9600 rd_NO_PLYMOUTH" GRUB_DISABLE_RECOVERY="true" Also see: http://0pointer.de/blog/projects/serial-console.html There should be no need to modify any .service files; simply editing /etc/default/grub and regenerating grub2's config should be enough; it was in my case (I verified by looking through root's .bash_history...

...RUB_DEFAULT=saved > GRUB_DISABLE_SUBMENU=true > GRUB_TERMINAL_OUTPUT="console" > GRUB_CMDLINE_LINUX="rd.lvm.lv=centos_amandine/root \ > rd.lvm.lv=centos_amandine/swap \ > video=1024x768 \ > quiet" > GRUB_DISABLE_RECOVERY="true" > > According to the official documentation, pressing any alphanumerical key > just after the BIOS screen will make the GRUB menu appear. I tried that, > but to no avail. > > Any idea what's the magic combination to make the GRUB boot menu appear > when GRU...

Suggestion: once it's up, rebuild the initramfs. > > I tried that already, but still the same problem. Aparently dracut does not want to activate the LVs required to boot to the root filesystem, for some reason ... Yannis -- Sent from Gmail Mobile

Steffan A. Cline wrote: > I?ve looked and looked and can?t seem to find anything which would > explain why grub.cfg would have been rewritten with a whole new volume > group name. > > Suggestions? > C6 or C7? In either case, have you looked in /etc/default/grub? mark

...NU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel_7/swap rd.luks.uuid=luks- cc387312-6da6-469a-8e49-b40cd58ad67a crashkernel=auto vconsole.keymap=us vconsole.font=latarcyrheb-sun16 rd.lvm.lv=rhel_7/root rhgb quiet net.ifnames=0 biosdevname=0" GRUB_DISABLE_RECOVERY="true" Then for an EUFI system run this: ~]# grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg Reboot and you should have your old eth0, eth1, etc. naming convention back again. WATCH YOUR TYPING. BE CAREFUL NOT TO OMIT OR ADD EXTRANEOUS SPACES !!! Hope this helps. --Doc Savage Fairvie...

...~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rd.shell rhgb" GRUB_DISABLE_RECOVERY="true" ------------------------------ Message: 2 Date: Mon, 30 Jul 2018 17:53:56 +0200 From: "Simon Matter" <simon.matter at invoca.ch> To: "CentOS mailing list" <centos at centos.org> Subject: Re: [CentOS] Issues booting centos7 [dracut is failing to e...

...OUT=5 > GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" > GRUB_DEFAULT=saved > GRUB_DISABLE_SUBMENU=true > GRUB_TERMINAL_OUTPUT="console" > GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rd.shell > rhgb" > GRUB_DISABLE_RECOVERY="true" > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >

Am 14.03.23 um 12:30 schrieb Rob Kampen: > OK, > > found out the problem as to why it doesn't boot any kernel except 36.2 > > the system reports that it cannot find > > vmlinuz-3.10.0-1160.88.1.el7.x86_64 > > or any one of the others, except for vmlinuz-3.10.0-1160.36.2.el7.x86_64 > > hence a manual selection from the grub menu when in front of the machine

...sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=auto rd.md.uuid=066ffecb:69137a0b:4e579b4f:dfbf1696 rd.md.uuid=bd87f682:e6df10e2:d2a6e247:834133f7 rhgb quiet" GRUB_DISABLE_RECOVERY="true" the /boot/grub2/grubenv contains # GRUB Environment Block saved_entry=CentOS Linux (3.10.0-1160.88.1.el7.x86_64) 7 (Core) ##############################################################################################################################################################...

I have built a CentOS 8 base image from a kickstart, for use in OpenStack. This image boots fine but the problem I have is that I can't stop udev from renaming the network device from eth0 to ens<something>. I have /etc/sysconfig/network-scripts/ifcfg-eth0 with the correct HWADDR defined in it, and have set net.ifnames=0 and biosdevname=0 in the grub configuration, but nothing I have

...hic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" ======================== *4-(7). Kernel module check* # lsmod | grep pci_stub pci_stub 12429 0 # lsmod | grep vfio vfio_pci 31388 0 vfio_iommu_type1 17118 0 vfio...

...faults 1 1 Configure and install bootloader: # cat /etc/default/grub GRUB_TIMEOUT=8 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rhgb quiet" GRUB_DISABLE_RECOVERY="true" GRUB_ENABLE_BLSCFG=true # grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ... done # grub2-install /dev/sda Installing for i386-pc platform. Installation finished. No error reported. # grub2-install /dev/sdb Installing for i386-pc platform. Installation...

...hic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" Linux command: sudo update-grub Output: Sourcing file `/etc/default/grub' Generating grub configuration file ... Found linux image: /boot/vmlinuz-5.3.0-28-generic Found initrd image: /boot/initrd....