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XenServer/6.1.0/rhel4x/. Because Citrix no longer provides RHEL 5.x kernels, you should obtain updates to RHEL
5.4 and higher kernels directly from Red Hat.
Rerunning the Linux/install.sh script from the built-in xs-tools.iso is particularly important for
CentOS versions prior to 5.3, where you will get the upstream kernel by default, which has certain limitations
(see Section B.1, “Release Notes”).
For yum-enabled distributions (CentOS 4 and 5, RHEL 5.4 and higher), xe-guest-utilities installs a yum
configuration file to enable subsequent updates to be done using yum in the standard manner.
For Debian, /etc/apt/sources.list is populated to enable updates using apt by default.
When upgrading, Citrix recommends that you always rerun Linux/install.sh when you upgrade. This script
automatically determines if your VM needs a kernel update and installs it if necessary.
Note:
SLES is also supported, but Citrix does not provide an updated kernel.