Windows 10: Linux VM's - increase boot menu delay time to select different kernel
Linux VM's - increase boot menu delay time to select different kernel
For those running Linux VM's especially with VMware where you have several kernels installed - the default is often TOO quick to be able to select the kernel you want to use
Note this is AFTER the VM starts booting - it's the VM boot screen not the "Virtual Bios" where you can select the boot device.
edit the defaults file in etc/default/grub
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
set the TIMEOUT to the value you want - 10 is usually plenty long enough
If you want your specific kernel to be top of the list then starting with 0 look at the entries in the boot and set GRUB_DEFAULT = n (starting with 0) so if your kernel is 2nd in the list set GRUB_DEFAULT=1).
then re-generate grub and reboot
grub2-mkconfig -o /boot/grub2/grub.cfg
Thanks for the info Jimbo . . .
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