France, I am not sure changing the boot sequence can be changed. In KVM installations if an ISO is attached then it will be booted automatically, I assume it's the same with Xenserver.
-- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "France" <mailingli...@isg.si> > To: users@cloudstack.apache.org > Sent: Wednesday, 24 June, 2015 14:19:15 > Subject: Re: Access root disk after botched upgrade > Just for the future reference, how can I change the boot order to boot from CD > first? > > I shut down one of the working instances and attached the iso for centos 6.4 > minimal to it. Started the instance again and it did boot form disk as > expected. I also did not see an option to boot from cd on console. > > Tnx and regards, > F. > > On 22 Jun 2015, at 18:56, Nux! <n...@li.nux.ro> wrote: > >> Add a Livecd ISO, attach it to the instance and boot from it? >> >> -- >> Sent from the Delta quadrant using Borg technology! >> >> Nux! >> www.nux.ro >> >> ----- Original Message ----- >>> From: "France" <mailingli...@isg.si> >>> To: users@cloudstack.apache.org >>> Sent: Sunday, 21 June, 2015 11:43:10 >>> Subject: Access root disk after botched upgrade >> >>> Hi, >>> >>> after upgrading Ubuntu Linux, the system does not boot, probably because of >>> wrong grub config format: >>> ( errorInfo: [Traceback (most recent call last):, File >>> "/usr/bin/pygrub", line 808, in ?, fs = fsimage.open(file, part_offs[0], >>> bootfsoptions), IndexError: list index out of range, ]) >>> >>> How can I get access to disk of this VM, to fix the grub file by hand and >>> try to >>> restart it? >>> I have CS 4.3 on XS 6.0.2 with ISCSI disk for virtual instances. >>> >>> Tnx. > >> France.