Hi there,
after applying these Debian 10 security updates
Code
Get:1 http://deb.debian.org/debian-security buster/updates/main amd64 grub2-common amd64 2.02+dfsg1-20+deb10u2 [538 kB]
Get:2 http://deb.debian.org/debian-security buster/updates/main amd64 grub-pc amd64 2.02+dfsg1-20+deb10u2 [131 kB]
Get:3 http://deb.debian.org/debian-security buster/updates/main amd64 grub-pc-bin amd64 2.02+dfsg1-20+deb10u2 [903 kB]
Get:4 http://deb.debian.org/debian-security buster/updates/main amd64 grub-common amd64 2.02+dfsg1-20+deb10u2 [2477 kB]
concerning the GRUB boot loader on my OMV 5 system I made a reboot and the I got stuck within the boot loader with this message:
error: symbol `grub_calloc' not found.
Entering rescue mode...
grub rescue>
I suppose it has something to do with this Debian/Ubuntu Bug: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889509
However, has anyone a hint to solve this issue?