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List:       grub-help
Subject:    write and read byte from grub to disk
From:       Venkata Subbarao <rao.subba.venkata () gmail ! com>
Date:       2014-10-31 5:14:38
Message-ID: CAFQyPcpLVTdpboeg28RDqQi+2-+S_mWPFjirSipnh7o78p4sPA () mail ! gmail ! com
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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

[Attachment #5 (text/html)]

<div dir="ltr"><div><div><div><div>Hi All,<br><br>I am using XUbuntu \
11.10<br><br>From grub I would like to read and <strong>write</strong> 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 \
?<br><br></div>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 ?<br><br></div>Since grub can read from MBR, I think it could be possible to \
read and write from offset 8GB. Please help \
me.<br><br></div>Thanks,<br></div>Subbarao<br></div>



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