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Re: [Xen-API] Xcp does not boot: I need to specify rootdelay

  • To: xen-api@xxxxxxxxxxxxx
  • From: Bastian Mäuser <mephisto@xxxxxxxxx>
  • Date: Mon, 14 Jan 2013 20:35:55 +0100
  • Delivery-date: Mon, 14 Jan 2013 19:36:07 +0000
  • List-id: User and development list for XCP and XAPI <xen-api.lists.xen.org>

Still running stable?

Am 09.01.2013 10:27, schrieb Mario Giammarco:

Yes the system is now on 24/24.

Il giorno 09/gen/2013 10:25, "Bastian Mäuser" <mephisto@xxxxxxxxx> ha scritto:
please let me know if USB boot runs stable for you..

Am 08.01.2013 21:41, schrieb Mario Giammarco:

2013/1/8 Bastian Mäuser <mephisto@xxxxxxxxx>
Please read correctly..

From #5 you have the instruction on how to modify your initrd on the Host to make it bootable from anythings USB like..

Sorry my android device shown me only first page. 

Do THIS b4 the first boot on a second console:

mkdir /tmp/sda
mount -t ext3 /dev/sda1 /tmp/sda

To thank you I suggest here to do avoid copy and do:

mount -t sysfs /sys /tmp/sda/sys

Then chroot /tmp/sda and continue from original


chmod -R 664 /sys/block
cp -R /sys/block /tmp/sda/sys/
# Ignore I/O errors
chroot /tmp/sda
cd /boot
mv initrd-2.6.18-128.1.6.el5.xs5.5.0.505.1024xen.img initrd-2.6.18-
mkinitrd --with-usb initrd-2.6.18-128.1.6.el5.xs5.5.0.505.1024xen.img 2.6.18-

replace the version numers with your's..

Am 08.01.2013 11:26, schrieb Mario Giammarco:

Ok thanks for the reply but the link in the wiki is wrong: it sends me to a page that helps people with keys less than 16GB

Il giorno 08/gen/2013 10:56, "Bastian Mäuser" <mephisto@xxxxxxxxx> ha scritto:
Hi there,

the Probleme is not the rootdelay, but the USB Support which is missing
in the initrd..

Follow this instructions to fix it:


but be warned: for sdcard and usbkey did not run stable.


Am 08.01.2013 10:21, schrieb Mario Giammarco:
> Hello,
> I am trying xcp on a HP Microserver N40L.
> I have installed it on USB key.
> I am not able to boot it because it does not find root.
> In old kernels like 2.6 used in xcp is quite common this problem and
> I can fix it with rootdelay=60.
> But xcp use a "extlinux" bootloader and I cannot try the option.
> I have found and modified a extlinux.conf file but without luck.
> How can I pass rootdelay option to the kernel at boot?
> Thanks,
> Mario
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