Artesyn Embedded Technology 6806800U29D, Installation And Use Manual

Page: 107 / 144

Base Operating System
SharpStreamer™ Pro PCIE-7210 Installation and Use ( 6806800U29D)
107

Host machine OS : Same distribution as Base OS ISO.
For example, if Base OS is based on CentOS7.2, then use a host machine installed with
CentOS7.2.
Procedure
To modify ramfs, perform the following steps:
1. Mount the Base OS ISO to a directory.
For example, /mnt directory.
$ mount –t MC3K_7210_OS_CENTOS72_DIST_<Revision and Version
number>.iso /mnt
2. Unpack
ramfs.xz
to a location.
For example, to uncompress ramfs.gz to /tmp/rootfs directory.
$ sh /mnt/utils/unpackinitramfs /mnt/images/ramfs.xz
/tmp/rootfs
3. Modify the /tmp/rootfs according to your requirements.
4. Repackage
ramfs.xz
from /tmp/rootfs , using any of the below commands.
$ sh /mnt/utils/mkinitramfs /tmp/rootfs /tmp/ramfs.xz
(xz compression: less space, slower compression, slower booting).
or
$ sh /mnt/utils/mkinitramfs /tmp/rootfs /tmp/ramfs.gz
(gz compression: more space, faster compression, faster booting)
5. Modify the
files.sha1sum
file with updated
sha1sum
of
ramfs.xz
or
ramfs.gz
.
files1.sha1sum
is used during installation and it needs to be in the same location as
ramfs.gz
/
ramfs.xz
sha1sum ramfs.xz > files.sha1sum
or
sha1sum ramfs.gz > files.sha1sum