what is this? echo "0x100" > /proc/sys/kernel/r

While trying to speed up booting time, I came to these lines in linuxrc:

# Change root device from /dev/fd0 to /dev/ram0
echo "0x100" > /proc/sys/kernel/real-root-dev

--Don't worry about it, anything with a 0x in front of it is Hexadecimal notation. I suck at math; but if my experiment with ' bc ' is correct, 0x100 == 256 Decimal.

--I wouldn't touch that line IIWY. :)

Quote:

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Originally Posted by tealeaf

While trying to speed up booting time, I came to these lines in linuxrc:

# Change root device from /dev/fd0 to /dev/ram0
echo "0x100" > /proc/sys/kernel/real-root-dev

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You are correct about your hexadecimal conversion.

To learn more look at: http://vwop.port5.com/beginner/bhextut.html

Quote:

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Originally Posted by tealeaf

While trying to speed up booting time, I came to these lines in linuxrc:

# Change root device from /dev/fd0 to /dev/ram0
echo "0x100" > /proc/sys/kernel/real-root-dev

---

I think it does exactly what the comment says it does. It changes the root-device from /dev/fd0 (which is the first floppy drive, booting from cdrom also emulates a floppy) to /dev/ram0.

normally this is done with pivot_root (see "man pivot_root") but I guess they didn't have space to include that on the floppy image.

That guys above was right when he said you should leave this line alone ;)