How to Clean bad Grubfirmware off DOC?
Quoted 11 lines
Since you cannot boot with the doc2000 installed, I'd recommend trying the following, **very carefully**:
1. Turn off system
2. Remove DoC from board (I assume it's an ISA/PCI board with DoC socketed?)
3. Install *empty* DoC board
4. Boot into DOS
5. Install latest M-Sys DOS utilities (if not already done)
6. *** CAREFULLY *** install DoC into socket
7. Run DFORMAT utility to replace grub firmware
*Disclaimer: This procedure has worked for me, but it could do *bad things* to your DoC. Use it only as a last resort.
By saying above ,do you mean "hot plug" ?
Quoted 4 lines
If your machine supports "Network" boot, you may want to try configuring GRUB with the "--enable-diskonchip-biosnetboot" option. This will allow you to selectively boot from the DoC, returning to booting from a hard drive or floppy when needed.
Sorry I am not familiar with GRUB .I just do something after the readme .
So, I cannot understand what's the meanig completely .
Do you mean that I can install a grub on my harddisk with "network " option ,then install DOC ,then I can boot from harddisk with DOC in my board ?
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Quoted 12 lines · * on the Thu, Jun 27, 2002 at 10:36:34PM +0800, [email protected] wrote:
Quoted 11 lines
Since you cannot boot with the doc2000 installed, I'd recommend trying the following, **very carefully**:
1. Turn off system
2. Remove DoC from board (I assume it's an ISA/PCI board with DoC socketed?)
3. Install *empty* DoC board
4. Boot into DOS
5. Install latest M-Sys DOS utilities (if not already done)
6. *** CAREFULLY *** install DoC into socket
7. Run DFORMAT utility to replace grub firmware
*Disclaimer: This procedure has worked for me, but it could do *bad things* to your DoC. Use it only as a last resort.
Quoted 1 line
By saying above ,do you mean "hot plug" ?
And do you mean you have to have
- DOS (why shouldn't I use Linux?)
- An Empty DOC
??
Quoted 4 lines
Quoted 4 lines
If your machine supports "Network" boot, you may want to try configuring GRUB with the "--enable-diskonchip-biosnetboot" option. This will allow you to selectively boot from the DoC, returning to booting from a hard drive or floppy when needed.
IF your board does support that. Mine does not. That's why the whole fun started. That, and the inability of grub to access my filesystem.
Peter
Signature · 2 lines
Those who give up essential liberties for temporary safety deserve neither liberty nor safety. -- Benjamin Franklin
Quoted 3 lines · Peter Keel
Quoted 1 line
By saying above ,do you mean "hot plug" ?
And do you mean you have to have
- DOS (why shouldn't I use Linux?)
You don't *have* to use DOS, it just might be slightly easier to run DFORMAT to erase GRUB and return the DoC to its "virgin" state.
If you used Linux, you would need to have all of the proper MTD stuff compiled as modules, and do your "insmod" or "modprobe" *after* hot-plugging the DoC. You would also need to use "eraseall" to wipe out GRUB, and I didn't recommend that option because of the possibility of wiping out the bad block table.
Quoted 2 lines
- An Empty DOC
??
To clarify, "an empty DoC board" simply means inserting the ISA or PCI eval board, without installing the DoC. Obviously, this would allow you to boot without the DoC GRUB taking over, and then you could "hot-plug" the DoC to erase it.
Keep in mind that these instructions assume a PC and a M-Sys eval-board. If your system is different, please post the specifics.
For what it's worth, my development PC has an ISA eval-board, and the ability to "network" boot. My target system has a *socketed* DoC, with no monitor or keyboard. I make sure the DoC is bootable (from (dc0,0) with root file system on /dev/nftla1) prior to installing it on my target.
What version of GRUB did you use, prior to applying the patch? I'm still curious as to why it doesn't recognize your root filesystem. Are you running GRUB on your hard drive?
Quoted 10 lines · * on the Fri, Jun 28, 2002 at 05:58:29PM -0400, Mark Meade wrote:
Quoted 2 lines
- An Empty DOC
??To clarify, "an empty DoC board" simply means inserting the ISA or PCI eval board, without installing the DoC. Obviously, this would allow you to boot without the DoC GRUB taking over, and then you could "hot-plug" the DoC to erase it.
Keep in mind that these instructions assume a PC and a M-Sys eval-board. If your system is different, please post the specifics.
Ah, ok. I understand. My DoC is on the mainboard. I'm not even sure if its socketed or soldered in, haven't checked. The machine is an IGEL-Terminal, 233Mhz, 32MB Ram, 16MB DoC 2000, Cyrix Media GX. An older one. I think Its an IGEL-C. From http://www.igel.de
Originally came with linux 2.0.36, libc5 and M-Systems binary-only driver, no ssh. So I had to fix that ;)) As it turned out, 2.4.18 was the first kernel able to handle the nasty DMA-bug of the Media GX chipset..
Quoted 3 lines
What version of GRUB did you use, prior to applying the patch? I'm still curious as to why it doesn't recognize your root filesystem. Are you running GRUB on your hard drive?
No. On the Harddisk is lilo. Grub was 0.93 or something. the newest from cvs plus the newest MTD-patches, plus the Debian-diff, all neatly patched in, with the rejects ironed out. Compiled with all the debian-options plus the docchip-2000 option.
Cheers
Peter
Signature · 2 lines
Those who give up essential liberties for temporary safety deserve neither liberty nor safety. -- Benjamin Franklin