[Buildroot] grub.cfg "set fallback=XXX"

[Eldor Rødseth]

Hi! 

I have the following content in my buildroot/busybox/grub2-based EFI system grub.cfg-file: 


-------------------------------- start -------------------------
set default=rootfs2 
set fallback=rootfs1 
set timeout=5 

menuentry "Alternating SW Image (rootfs) 1 - Linux 4.20.8 root at sda2" --id rootfs1 { 
        linux /bzImage root=/dev/sda2 quiet loglevel=4 console=ttyS0,115200n8 id=rootfs1 
} 

menuentry "Alternating SW Image (rootfs) 2 - Linux 4.20.8 root at sda3" --id rootfs2 { 
        linux /bzImage root=/dev/sda3 quiet loglevel=4 console=ttyS0,115200n8 id=rootfs2 
} 

menuentry "USB Installation Disk - Linux 4.20.8 root at sdb2" --id usb { 
        linux /bzImage root=/dev/sdb2 rootwait quiet loglevel=4 console=ttyS0,115200n8 id=usb 
} 


-------------------------------- end -------------------------


Now; my problem is that even if I completely wipe-out the /dev/sda3 (i.e. --id rootfs2) to force a fallback to /dev/sda2 (i.e. --id rootfs1) the grub2 boot loader persistently only tries to boot from the corrupted entry (i.e. rootfs2). So ... what am I doing wrong ... ?

 

Med vennlig hilsen
Eldor Rødseth
Tlf. +47 95086888

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