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PostPosted: Tue Apr 20, 2010 4:40 pm 
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Greetings,

i would like to know what uBoot variables i have to change to boot from a usb device instead of IDE.
It's a HD-HG, do these settings also apply to my model?
http://buffalo.nas-central.org/wiki/Boo ... _USB_drive


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PostPosted: Wed Apr 21, 2010 5:01 am 
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Posts: 2606
I have done this same operation that you mention on my LSPro, but never tried it on the HG or HD (LS1, LSHG) ...

The principle should be the same, but you'll have to do it a bit differently. The KuroPro has a large NAND flash chip (256MB), and I think the method listed makes use of that.

I can't remember how I did this on the LSPro (exactly) but the 2 or 3 people that bounced ideas off of each other, including me, we all wrote our command up on a thread regarding that...

I'm not sure but we may have either tftp-ed the kernel in, or read the kernel from a hdd, and then used just the rootfs from the flash drive.

If I can find that thread I will post it for you.

Essentially, it would be the same process, but you'd have to modify the memory locations, etc.

_________________
LS1 (foonas, nfs, Tranmission & p910nd print server, Firefly for my Roku)
LS-HG500 (Lenny)
Various LS-Pros v1,v2 (unbricked w/ serial & jtag)
KuroPro, LS2 & KuroHG (foonas)
Working on davysweather.dyndns.org lately...

=> wooohooo!
wooohooo!
Unknown command 'wooohooo!' - try 'help'


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PostPosted: Wed Apr 21, 2010 5:08 am 
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Posts: 2606
viewtopic.php?f=51&t=11211&hilit=boot+flash+uboot

as best as I can remember, that's what I did ... tftp in the kernel and ... then have it look for the rootfs on the flash drive ... I remember that I had to add some sort of wait period so it had time to find the partition, files, etc of the rootfs on the pen drive...

If I remember correctly when I did this on the LSPro, I changed nothing in flash ... it was just tftp-ing the kernel and then telling it look for the rootfs on the flash drive...

_________________
LS1 (foonas, nfs, Tranmission & p910nd print server, Firefly for my Roku)
LS-HG500 (Lenny)
Various LS-Pros v1,v2 (unbricked w/ serial & jtag)
KuroPro, LS2 & KuroHG (foonas)
Working on davysweather.dyndns.org lately...

=> wooohooo!
wooohooo!
Unknown command 'wooohooo!' - try 'help'


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PostPosted: Wed Apr 21, 2010 11:43 am 
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Joined: Mon Aug 13, 2007 1:16 pm
Posts: 68
so the kernel must be read in each case from an IDE-device...

no chance to boot via usb even without having an IDE-HDD plugged?


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PostPosted: Wed Apr 21, 2010 12:59 pm 
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Joined: Mon Aug 28, 2006 1:15 am
Posts: 2606
if I understand it correctly, using our current uboots, it can be brought in from the IDE hdd, or via tftp. Once loaded, it can then use its USB capability to see the rootfs on the USB flash drive.

It is also my understanding that USB capability can be added to uboot so that it could boot solely from a USB device. This might take some effort.

EDIT: It would take adding in low-level drivers in uboot for the specific USB hardware on the LS-HG (as in your case) or the LS1.

_________________
LS1 (foonas, nfs, Tranmission & p910nd print server, Firefly for my Roku)
LS-HG500 (Lenny)
Various LS-Pros v1,v2 (unbricked w/ serial & jtag)
KuroPro, LS2 & KuroHG (foonas)
Working on davysweather.dyndns.org lately...

=> wooohooo!
wooohooo!
Unknown command 'wooohooo!' - try 'help'


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