Re: "cannot create /boot/grub/grub.cfg.new: Read-only file system" on a Power Mac G5

On Sun, Aug 11, 2024 at 02:04:18PM +0300, ilko Iliev wrote:
>  Hello Len,  
>   Here's what the mounts are like:
>
<snip things that did not survive plain text well>

/boot/grub                                                  /dev/sda2   hfs         ro,relatime,uid=0,gid=0

That is certainly mounted readonly (ro) so unless you remount it rw it is not going to be able to update.

I am not sure why that is an hfs volume.  Is that normal for grub on
a powermac?  I am affraid I have only used other powerpc linux systems
myself.  Looking it up a bit it does appear that it is normal to use
hfs for /boot/grub since the firmware has to read grub from there.

You could try doing: mount -o remount,rw /boot/grub

Maybe that will make it read write and hence able to allow grub to update.