Assume that the tap disk is using xvda
1) losetup /dev/loop0 /vm/xen_xxx/data
where /vm/xen_xxx/data is your xen image
2) Once this is mounted, You can do a fdisk to check the partition inside /dev/loop0
3) kpartx -a /dev/loop0 to reload the partition layout
4) mount /dev/mapper/loop0p1 /mnt to mount the partition into /mnt
Cheers.
I had to write some good old classic ASP code today and my classic ASP coding skills are so rusty that I put tons of errors in the code. I’m used to having basic ASP error messages on IIS5 and 6 which usually help me to track down problems. On IIS7 I only got the following though:
An error occurred on the server when processing the URL. Please contact the system administrator
After investigating a bit I figured out that we changed the default for the “scriptErrorSentToBrowser” flag in IIS7. It’s now false and you always get the error above. Here is how to change it:
%windir%\system32\inetsrv\appcmd set config -section:asp -scriptErrorSentToBrowser:true
Once you are done with debugging your ASP app please set it back to false. There are lots of ‘evildoers’ out there! 
chkconfig –level 3 yum-updatesd off
chkconfig –level 3 xfs off
chkconfig –level 3 sendmail off
chkconfig –level 3 rpcidmapd off
chkconfig –level 3 rpcgssd off
chkconfig –level 3 portmap off
chkconfig –level 3 pcscd off
chkconfig –level 3 nfslock off
chkconfig –level 3 netfs off
chkconfig –level 3 kudzu off
chkconfig –level 3 iptables off
chkconfig –level 3 ip6tables off
chkconfig –level 3 firstboot off
chkconfig –level 3 gpm off
chkconfig –level 3 bluetooth off
chkconfig –level 3 cups off
chkconfig –level 3 avahi-daemon off
chkconfig –level 3 autofs off