[ale] Grub2 jump to internal hard drive MBR

[Horkan Smith]

What happened with that entry?

I'm not booting between disks, but I do have a 2-layer grub process (1st chainloads whatever's on the individual partition, which is frequently another grub.)

I use this:

menuentry "chainloader sda2" {
        insmod part_msdos
        set root='(hd0,msdos2)'
        chainloader +1
}

later!
   horkan

On Mon, Oct 10, 2016 at 11:25:03AM -0400, Chris Fowler wrote:
> I'm trying to do something that I'm not sure is possible. 
> 
> I'm using a bootable USB with Grub2 to boot up a Linux system on a device that has something installed on its internal drive. 
> Sometimes I need to boot of the internal drive to fix something on the USB stick. This requires walking to the cart the equipment is on, pulling the USB, booting, and plugging the USB back in. I'm running Grub2 with serial so I could do all this from my office. 
> 
> I want to add an entry to grub.cfg on the USB that will jump to the MBR on the internal drive from the USB. Can I even do this? I'd like to select "Internal Drive" on the grub2 screen and then see the grub1 menu as if I booted without the USB. 
> 
> I've tried this entry: 
> 
> set timeout=10 
> insmod usb 
> insmod ext2 
> insmod serial 
> serial --speed=9600 --unit=0 --word=8 --parity=no --stop=1 
> terminal_input --append serial 
> terminal_output --append serial 
> set root=(hd0,1) 
> 
> ..... 
> 
> menuentry "Internal Drive" { 
> insmod chain 
> chainloader (hd1,0)+1 
> 
> } 
> 
> Chris 

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-- 
Horkan Smith
678-777-3263 cell, ale at horkan.net