grub

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How to configure Grub2 to be able to boot alternatively on UEFI or BIOS mode

Knowledge Article updated on 16 May 2022, 11:21 AM GMT - 0 -

0

Red Hat Enterprise Linux
How to change a forgotten or lost root password

KCS Solution updated on 11 May 2022, 10:08 AM GMT - 31 -

5

Red Hat Enterprise Linux
How to disable UEFI Secure Boot on a VMware virtual machine

KCS Solution updated on 11 May 2022, 8:09 AM GMT - 0 -

0

Red Hat Enterprise Linux for x86_64
Why does rebuilding grub.cfg on rhel-guest-image does not honor saved_entry from grubenv file?

KCS Solution updated on 03 May 2022, 3:58 AM GMT - 1 -

0

Red Hat Enterprise Linux
Failed to update kernel packge

KCS Solution updated on 03 May 2022, 1:57 AM GMT - 0 -

0

Red Hat Enterprise Linux
How do I increase the kernel log ring buffer size?

KCS Solution updated on 30 Apr 2022, 1:31 PM GMT - 4 -

0

Red Hat Enterprise Linux
How do I change the default kernel in GRUB that is loaded at startup?

KCS Solution updated on 30 Apr 2022, 7:52 AM GMT - 13 -

0

Red Hat Enterprise Linux
How to modify the boot parameter in RHEL 9

KCS Solution updated on 30 Apr 2022, 6:29 AM GMT - 0 -

0

Red Hat Enterprise Linux
How to manually modify the boot parameter in grub before the system boots

KCS Solution updated on 30 Apr 2022, 4:37 AM GMT - 5 -

0

Red Hat Enterprise Linux
How do I permanently modify the kernel command line?

KCS Solution updated on 29 Apr 2022, 8:01 PM GMT - 1 -

0

Red Hat Enterprise Linux
How do I permanently modify the kernel command line in RHEL 8 or 9?

KCS Solution updated on 29 Apr 2022, 5:02 PM GMT - 1 -

0

Red Hat Enterprise Linux
System fails to boot with error "file 'grub2/i386-pc/normal.mod' not found"

KCS Solution updated on 29 Apr 2022, 5:43 AM GMT - 1 -

0

Red Hat Enterprise Linux
What is GRUB_ENABLE_BLSCFG in /etc/default/grub?

KCS Solution updated on 22 Apr 2022, 7:53 AM GMT - 0 -

0

Red Hat Enterprise Linux for x86_64
Why does system fails to boot with "dracut: FATAL: Don't know how to handle 'root=UUID'" ?

KCS Solution updated on 21 Apr 2022, 5:59 PM GMT - 0 -

0

Red Hat Enterprise Linux for x86_64
Why does GRUB Installation fails with error - 'grub2-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist' ?

KCS Solution updated on 21 Apr 2022, 4:23 AM GMT - 2 -

0

Red Hat Enterprise Linux
How do I boot using an alternate / previous / older kernel?

KCS Solution updated on 15 Apr 2022, 9:25 PM GMT - 4 -

5

Red Hat Enterprise Linux
grub2-mkconfig command shows "/usr/sbin/grub2-probe: error: failed to get canonical path of `/dev/mapper/rhel-root'." error message after renaming root lv.

KCS Solution updated on 14 Apr 2022, 12:11 PM GMT - 0 -

0

Red Hat Enterprise Linux
After renaming LVM volume group, receiving "/usr/sbin/grub2-probe: error: failed to get canonical path"

KCS Solution updated on 14 Apr 2022, 12:07 PM GMT - 1 -

0

Red Hat Enterprise Linux
How to boot into emergency or multi-user mode from GRUB2

KCS Solution updated on 12 Apr 2022, 7:11 PM GMT - 7 -

0

Red Hat Enterprise Linux
Resetting the Root Password of RHEL 8 and later

KCS Solution updated on 10 Apr 2022, 11:16 PM GMT - 7 -

0

Red Hat Enterprise Linux
Why does the RHEL 8 system boot into emergency mode with `Failed to switch root` error ?

KCS Solution updated on 08 Apr 2022, 9:58 AM GMT - 0 -

0

Red Hat Enterprise Linux
What is the intention of the Linux 0-rescue grub entry?

KCS Solution updated on 08 Apr 2022, 3:25 AM GMT - 1 -

0

Red Hat Enterprise Linux
How to recover in rescue mode if GRUB boot fails with "Error 15: File not found"

KCS Solution updated on 08 Apr 2022, 3:17 AM GMT - 3 -

0

Red Hat Enterprise Linux
How to remove the grub password in Red Hat Enterprise Linux?

KCS Solution updated on 07 Apr 2022, 4:02 PM GMT - 2 -

0

Red Hat Enterprise Linux
How can I test if secureboot is enabled?

Knowledge Article updated on 05 Apr 2022, 2:36 AM GMT - 3 -

0

Red Hat Enterprise Linux

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grub

How to configure Grub2 to be able to boot alternatively on UEFI or BIOS mode

How to change a forgotten or lost root password

How to disable UEFI Secure Boot on a VMware virtual machine

Why does rebuilding grub.cfg on rhel-guest-image does not honor saved_entry from grubenv file?

Failed to update kernel packge

How do I increase the kernel log ring buffer size?

How do I change the default kernel in GRUB that is loaded at startup?

How to modify the boot parameter in RHEL 9

How to manually modify the boot parameter in grub before the system boots

How do I permanently modify the kernel command line?

How do I permanently modify the kernel command line in RHEL 8 or 9?

System fails to boot with error "file 'grub2/i386-pc/normal.mod' not found"

What is GRUB_ENABLE_BLSCFG in /etc/default/grub?

Why does system fails to boot with "dracut: FATAL: Don't know how to handle 'root=UUID'" ?

Why does GRUB Installation fails with error - 'grub2-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist' ?

How do I boot using an alternate / previous / older kernel?

grub2-mkconfig command shows "/usr/sbin/grub2-probe: error: failed to get canonical path of `/dev/mapper/rhel-root'." error message after renaming root lv.

After renaming LVM volume group, receiving "/usr/sbin/grub2-probe: error: failed to get canonical path"

How to boot into emergency or multi-user mode from GRUB2

Resetting the Root Password of RHEL 8 and later

Why does the RHEL 8 system boot into emergency mode with `Failed to switch root` error ?

What is the intention of the Linux 0-rescue grub entry?

How to recover in rescue mode if GRUB boot fails with "Error 15: File not found"

How to remove the grub password in Red Hat Enterprise Linux?

How can I test if secureboot is enabled?

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