migrating grub from BIOS to UEFI loses /etc/default/grub

[Harald Dunkel]

Hi folks,

if I migrate from grub-pc to grub-uefi, then grub-pc.postrm
removes /etc/default/grub on the final purge.

grub2 doesn't provide much information in its man pages, but
AFAICT /etc/default/grub is still processed for UEFI, so why
is it deleted?

Regards
Harri

[Florent Rougon]

Hi,

Post by Harald Dunkel
if I migrate from grub-pc to grub-uefi, then grub-pc.postrm
removes /etc/default/grub on the final purge.

I confirm the behavior, have been bitten by this. IMHO, it is a nasty
bug: suppose your rely on your kernel command line to disable, say, the
IPv6 stack—because you don't need it and your firewall rules don't
handle IPv6. When grub-pc is purged, the IPv6 stack gets silently
activated on your box, even though you are still naked regarding the
firewall. :(

Regards

[Harald Dunkel]

Full thread is on debian-boot mailing list.

[Florent Rougon]

Post by Harald Dunkel
Full thread is on debian-boot mailing list.

I've read it now, thanks for the info, Harald!

Regards