Arch Linux

PPK

Member

From: Myanmar, Pyay, Aung San 5th

Registered: 2021-01-06

Posts: 4

[SOLVED] grub-mkrescue giving error: `mcopy` invocation failed

command

grub-mkrescue /usr/lib/grub/i386-pc -o dist/x86_64/HelloworldOS.iso target/x86_64/iso/

log

mcopy: No directory slots
grub-mkrescue: error: `mcopy` invocation failed
.

GRUB version - 2:2.06-1
libisoburn version - 1.5.4-2
mtools 1:4.0.33-1

This command worked before a few months ago. So I think the update is probably the cause.

Solution: revert to mtools 1:4.0.31

Last edited by PPK (2021-07-21 06:51:19)

nukelet

Member

Registered: 2021-07-20

Posts: 1

Re: [SOLVED] grub-mkrescue giving error: `mcopy` invocation failed

I have this issue as well.

loqs

Member

Registered: 2014-03-06

Posts: 18,386

Re: [SOLVED] grub-mkrescue giving error: `mcopy` invocation failed

https://bugs.archlinux.org/task/71547