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write and read byte from grub to disk


From: Venkata Subbarao
Subject: write and read byte from grub to disk
Date: Fri, 31 Oct 2014 10:32:38 +0530

Hi All,

I am using XUbuntu 11.10

From grub I would like to read and write a byte to a file located in /boot/grub folder from grub. I checked all modules that are available in folder /boot/grub/i386-pc. reading from file seems to be possible. But, I did not find a way to write to file. Can someone in this forums please help me ?

If it is not possible, I can create a small 1MB partition for this data, which is exactly at 8GB offset. Is it possible to read and write from this offset ?

Since grub can read from MBR, I think it could be possible to read and write from offset 8GB. Please help me.

Thanks,
Subbarao

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