Howto manipulate initram.igz?

thessy · Post by **thessy** » 27 Mar 2008, 14:26

Hi,

want to manipulate the initram.igz and add a new parameter 'BOOTNIC' for booting via pxe and multiple nics. My problem is that the pxe nic is on booting linux is the second (eth1) and so udhcpc fails with no lease.

Did unpackaging of an existing initram.igz like:

mkdir temp
cd temp
cat ../initram.igz | gzip -d | cpio -id

Tried to packaging the whole directory with:

find . -depth -print | cpio -ov | gzip > ../initram2.igz

But that seems not to be the right way. Error with the ram disk and vfs root.

How do you (the developers) generate the initram.igz package?

Regards
Thomas

Post by **admin** » 27 Mar 2008, 19:16

Just use sysresccd-1.0.1-beta7: udhcpc is done on all the NICS.

thessy · Post by **thessy** » 28 Mar 2008, 07:29

Ok, thanx for the hint. I missed the link to the beta download.

Post by **admin** » 28 Mar 2008, 20:54

I released SystemRescueCd-1.0.1-rc2 that improves the management of the dhcp client when there are multiple interfaces. Now it should work even when only one interface is connected, and it retries until dhcp works on one interface.

thessy · Post by **thessy** » 31 Mar 2008, 07:21

A little bit confused about version numbers: you write about 1.0.1-rc2 on download website I read 1.0.2-beta. Which is the latest?

thessy · Post by **thessy** » 31 Mar 2008, 09:57

I downloaded 1.0.2-beta and the problem with two nics is gone!

Post by **admin** » 31 Mar 2008, 19:05

Happy that it works.

version 1.0.1-rc2 dissapeared from the website since the final 1.0.1 is available. A RC is a Release-candidate, so it's the version before the final. So here is the order of the versions:
1.0.1-betaX < 1.0.1-rcX < 1.0.1 < 1.0.2-betaX < 1.0.2-rcX < 1.0.2

Now 1.0.2-beta2 is available with the new improvements and bug fixes.

Ram · Post by **Ram** » 05 Apr 2008, 15:20

I am also interested in how to unpack initram.igz.

Please provide details.

Thanks!

Post by **admin** » 05 Apr 2008, 15:50

Extract:

Code: Select all

mkdir tempdir
cat /path/to/initram.igz | gzip -d | cpio -id

Recreate initram.igz:

Code: Select all

cd tempdir
find . | cpio -H newc -o | gzip -9 |> /path/to/initram.igz

Jabberwock · Post by **Jabberwock** » 13 Apr 2010, 20:05

Since 1.5.2 igz compressed with lzma
so

Extract

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mkdir tempdir
cat /path/to/initram.igz | /usr/bin/unlzma | cpio -id

Recreate initram.igz:

Code: Select all

cd tempdir
find . | cpio -H newc -o | /usr/bin/lzma -9 |> /path/to/initram.igz

bugmenotplease · Post by **bugmenotplease** » 12 Jul 2011, 05:42

Correction:
Only the following worked for me:
extract

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$ cat ../customcd/isoroot/isolinux/initram.igz | unxz | sudo cpio -id

repack:

Code: Select all

$  find . |cpio -o -H newc| lzma > /tmp/new.initram.igz

SystemRescueCd

Howto manipulate initram.igz?

Howto manipulate initram.igz?

Re: Howto manipulate initram.igz?

Re: Howto manipulate initram.igz?