Каскадный режим | Линейный режим

Foxhound2153 · 15.02.2015 06:00

I have a dreamcast that I believe was flashed by Dreamshell 4 RC3 using the selected bios "boot_loader bios"

However, everytime I boot the dreamcast I get the same black screen stating "DreamShell boot loaderv2.3 press start to enter boot menu". However, no matter what SD configuration I try nothing happens when pressing start...IM STUCK. PLEASE HELP

https://vimeo.com/119659689

**megavolt85** · 15.02.2015 10:52

Need flash boot_loader_unlock_G1.bios and replace DS_CORE.BIN

Foxhound2153 · 15.02.2015 12:27

(15.02.2015 10:52)megavolt85 писал(а): Need flash boot_loader_unlock_G1.bios and replace DS_CORE.BIN

Thank you for the reply. How do I go about doing this? I don't seem to have any option of flashing the bios

**megavolt85** · 15.02.2015 12:42

Place "boot_loader_unlock_G1.bios" to folder "/firmware/bios/ds" on SD , boot from SD and flash boot_loader_unlock_G1.bios

alex · 15.02.2015 12:48

Do you have DS folder with dreamshell files on your SD card?

Foxhound2153 · 15.02.2015 20:59

(15.02.2015 12:48)alex писал(а): Do you have DS folder with dreamshell files on your SD card?

Yes, Im putting the DS folder from DreamShell 4.0 RC 3 + Boot Loader on the SD card. Iv also used the latest DS_Core.BIN and SD_DS_CORE.BIN

It still boots to that same screen. Pressing start does nothing.

(15.02.2015 12:42)megavolt85 писал(а): Place "boot_loader_unlock_G1.bios" to folder "/firmware/bios/ds" on SD , boot from SD and flash boot_loader_unlock_G1.bios

Iv placed those files on the SD card. However, it simply wont boot from SD card because its stuck on that screen shown in the video. Pressing start does nothing. I cant get to a point where I can flash the bios

**megavolt85** · 16.02.2015 00:27

boot loader can't find DS_CORE.BIN , rename SD_DS_CORE.BIN to DS_CORE.BIN (not DS_Core.BIN)

Foxhound2153 · 16.02.2015 01:42

(16.02.2015 00:27)megavolt85 писал(а): boot loader can't find DS_CORE.BIN , rename SD_DS_CORE.BIN to DS_CORE.BIN (not DS_Core.BIN)

Sorry that was a typo above. It was DS_CORE.BIN

Regardless, I tried renaming the file and still nothing. Stuck on same screen - pressing start does nothing.

Should I use a different version of dreamshell on SD card perhaps?

**megavolt85** · 16.02.2015 10:15

Burn CD with DreamShell (not bootloader) , place boot_loader_unlock_G1.bios to /sd/, boot from CD,switch to custom bios, open filemanager -> SD -> boot_loader_unlock_G1.bios

Foxhound2153 · 16.02.2015 10:43

(16.02.2015 10:15)megavolt85 писал(а): Burn CD with DreamShell (not bootloader) , place boot_loader_unlock_G1.bios to /sd/, boot from CD,switch to custom bios, open filemanager -> SD -> boot_loader_unlock_G1.bios

Ok tried using the disc but it seems it still will not boot. Same issue but slightly different screen. See picture

Ideas?

**megavolt85** · 16.02.2015 10:46

Bad SD or bad sd adapter

Foxhound2153 · 16.02.2015 10:56

(16.02.2015 10:46)megavolt85 писал(а): Bad SD or bad sd adapter

Take that back. The SD card was loose. However, even when inserting a dreamshell disc I get the same screen as before. Is there some way to force CD boot?

**megavolt85** · 16.02.2015 11:03

insert sd to PC, open SD and make screenshot

Foxhound2153 · 16.02.2015 11:27

(16.02.2015 11:03)megavolt85 писал(а): insert sd to PC, open SD and make screenshot

I've tried several different configurations but here is the current one . Thanks again!

**megavolt85** · 16.02.2015 11:33

Bad SD or bad sd adapter, burn CD with DreamShell (not bootloader)

alex · 16.02.2015 11:43

Switch to original bios and boot Dreamshell from CD

Foxhound2153 · 16.02.2015 11:49

(16.02.2015 11:43)alex писал(а): Switch to original bios and boot Dreamshell from CD

I cant switch to original bios. I cant boot into anything other than this screen. Unless I'm missing something I have no way of switching bios since I cant get anywhere other than this screen. Is there a way to switch bios another way?

Foxhound2153 · 16.02.2015 12:09

(16.02.2015 11:33)megavolt85 писал(а): Bad SD or bad sd adapter, burn CD with DreamShell (not bootloader)

Tried burning the CD and it still refuses to boot. Am I out of options?

**megavolt85** · 16.02.2015 12:12

"switch to original bios" then switch jumper for boot from chip original bios, not MX29LV160

alex · 16.02.2015 12:17

Wait.
What type of bios mod installed in your dreamcast, bios replacement or dual bios mod?
Can you make some pictures of your dreamcast, especially bios mod on motherboard

Maybe gamepad is not working, try with another one, try press A button instead START.

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Каскадный режим \| Линейный режим Dreamshell 4 RC3 Bios Issue
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