More quiet booting

[Looper]

Hi guys , How Can I remove some information printing in boot step ?
Like :

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kernel_total_size

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loading /boot/core.gz

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loading /boot/vmlinuz

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early console in extract_kernel

[Rich]

Hi Looper

Hi guys , How Can I remove some information printing in boot step ?
Like :

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kernel_total_size

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loading /boot/core.gz

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loading /boot/vmlinuz

Those messages sound like they are from the boot loader.

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early console in extract_kernel

That one sounds like it might be coming from the kernel. You could try silencing it with the following boot code:

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loglevel=0
Which boot loader are you using?

[Looper]

Tanks for replaying @Rich  ,...
 I use SYSLINUX ( default of tiny core )
I got http://www.davedoesdev.com,https://www.syslinux.org/archives/2009-February/011897.html and https://codereview.chromium.org/1748010/patch/4001/5003 also https://gist.github.com/davedoesdev/3748363#file-syslinux-4-03-patch but really strange .
I don't know how can I patch ISOLinux.bin ,...

[Rich]

Hi Looper
Have you tried adding this to your  syslinux.cfg :

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CONSOLE 0as mentioned here:
https://wiki.syslinux.org/wiki/index.php?title=SYSLINUX#CONSOLE_flag_val

[Rich]

Hi Looper
Posting the contents of your config file might also be helpful.

[Looper]

Many tanks again for your replaying @Rich

This is my isolinux.cfg

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default mc
Label mc
      Kernel /boot/vmlinuz
      Append initrd=/boot/core.gz loglevel=0
Console 0
Implicit 0
Prompt 0
Timeout 0

Notice : I changed with your reply
But for now with this configuration I got :

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early console in extract_kernel
Input_data
Input_len
Output
output_len
Kernel_total_size
Decompressing Linux
Booting the kernel 

[Rich]

Hi Looper
Try changing this:

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Append initrd=/boot/core.gz loglevel=0to that:

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Append initrd=/boot/core.gz quiet loglevel=0

[Looper]

Hi @Rich , I try that .
No change affected . [emoji17]