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Author Topic: Bootloader question  (Read 1401 times)

Offline macgeek417

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Bootloader question
« on: July 19, 2009, 05:21:15 PM »
On my e250, Could I unencrypt the rockbox bootloader and replace the sansa bootloader screen with it? On my e250 the sansa BL screen takes forever to load
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Offline saratoga

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Re: Bootloader question
« Reply #1 on: July 19, 2009, 05:37:53 PM »
Yes, see the instructions in FS#8642.  However if you do this you will lose access to recovery mode and would have to use e200tool if you ever broke your firmware.
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Offline macgeek417

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Re: Bootloader question
« Reply #2 on: July 20, 2009, 01:33:42 PM »
OK... How could I install the unencrypted RB bootloader so that if i press the << key (i think that's the one that opens the OF?) it will boot the OF. At one point, on the NAND filesystem i had created a directory /System/OF.mi4 that contained an RB install so that when booting with USB plugged in it would boot RB (instead of throwing up an error because i didn't have the OF installed)

So, in short, could I put the OF in a directory on the main filesystem /System/OF.mi4 or a decrypted /System/OF.bin and when I push the << (?) key on startup it boots into the OF? That would let me restore the OF if anything ever went wrong, as long as the OF.* file was uncorrupted.
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Offline saratoga

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Re: Bootloader question
« Reply #3 on: July 20, 2009, 02:00:22 PM »
Quote from: macgeek417 on July 20, 2009, 01:33:42 PM
OK... How could I install the unencrypted RB bootloader so that if i press the << key (i think that's the one that opens the OF?) it will boot the OF.

This is the normal behavior of the bootloader.  You don't need to do anything to get it to dual boot.

Quote from: macgeek417 on July 20, 2009, 01:33:42 PM
That would let me restore the OF if anything ever went wrong, as long as the OF.* file was uncorrupted.

No it would not.  Having the OF on disk does nothing if the bootloader is corrupt, since you cannot power up a Sansa in anything but manunfactoring mode without a bootloader. 
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Offline macgeek417

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Re: Bootloader question
« Reply #4 on: July 20, 2009, 05:32:05 PM »
You misunderstood. I'm not worried in the slightest about the BL being corrupt. I'm takling about my RB instalation

If I use the RB BL, skipping the OF BL, could i still boot the OF?
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Offline saratoga

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Re: Bootloader question
« Reply #5 on: July 20, 2009, 07:16:10 PM »
Quote from: macgeek417 on July 20, 2009, 05:32:05 PM

If I use the RB BL, skipping the OF BL, could i still boot the OF?

As I said above, the rockbox bootloader can dual boot the OF (and does by default since we just recently got RB USB and needed to use the OF for it).
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Offline macgeek417

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Re: Bootloader question
« Reply #6 on: July 20, 2009, 07:42:33 PM »
Aah.

Um... could you tell me how to decrypt the RB Bootloader mi4 into a .rom bootloader? i ended up having to use e200tool when I tried.
I would build my own, but none of the dev enviroments work for me.

Better yet, could you provide a .bin of the v6 BL?
« Last Edit: July 20, 2009, 09:19:56 PM by macgeek417 »
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