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Trying to build an XP hvm using a compiled "xenified" kernel
(3.5.4) but having no success reading the cdrom or an image
made from the install disk.

Assuming Xen 4.2 given that you are using the latest kernel.

First read these:

[Xen Man Pages](http://wiki.xen.org/wiki/Xen_Man_Pages)

[xl.cfg doc](http://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html)

Relative to your previous question:

[xl Disk Configuration](http://xenbits.xen.org/docs/unstable/misc/xl-disk-configuration.txt)

Error in vnc display:
Booting from Cd-Rom...
CDROM boot failure code : 0003
Boot from CD-Rom failed: could not read the boot disk
No bootable device. Powering off in 30 seconds.

xl -vvv create testXpOn15g.cfg
Parsing config file configXL.cfg
xc: info: VIRTUAL MEMORY ARRANGEMENT:
Loader: 0000000000100000->0000000000172b10
TOTAL: 0000000000000000->000000003f800000
ENTRY ADDRESS: 00000000001015a0
xc: info: PHYSICAL MEMORY ALLOCATION:
4KB PAGES: 0x0000000000000200
2MB PAGES: 0x00000000000001fb
1GB PAGES: 0x0000000000000000
Daemon running with PID 11236
xc: debug: hypercall buffer: total allocations:585 total releases:585
xc: debug: hypercall buffer: current allocations:0 maximum allocations:2
xc: debug: hypercall buffer: cache current size:2
xc: debug: hypercall buffer: cache hits:582 misses:2 toobig:1

Your able to start the HVM and connect via VNC but it cannot boot to the iso?

testXpOn15g.cfg contents:
builder = "hvm"
name = "testXpOn15g.hvm"
viridian = 1
memory = 1024
vcpus = 1
vif = [ '' ]
# Disk Devices
#disk = [ 'phy:/dev/guestsVG/xpVol,hda,w','phy:/dev/sr0,hdc:cdrom,r' ]
#disk = [ 'phy:/dev/guestsVG/xpVol,hda,w','phy:/dev/sr0,ioemu:hdc:cdrom,r' ]
#disk = [ 'phy:/dev/guestsVG/xpVol,hda,w','phy:/dev/sr0,sda:cdrom,r' ]
disk = [ 'phy:/dev/guestsVG/xpVol,hda,w','/home/skippy/myXpImage/xpImage.iso,hdc:cdrom,r'
]
vnc = 1
boot = "d"

Based on the provided configuration, I would suggest trying this revised copy:

name="testXpOn15g.hvm"

builder="hvm"

vcpus=1

memory=1024

disk=[

'/dev/guestsVG/xpVol,,hda,w',

'/dev/sr0,,hdc,r,devtype=cdrom'

]

vif=[

]

boot='dc'

videoram=8

stdvga=1

viridian = 1

vnc=1

usb=1

usbdevice="tablet"

localtime=1

The qemu-dm-testXpOn15g.hvm.log:
domid: 22
-videoram option does not work with cirrus vga device model. Videoram set to 4M.
Using file /dev/guestsVG/xpVol in read-write mode
Strip off blktap sub-type prefix to (drv 'aio')
Watching /local/domain/0/device-model/22/logdirty/cmd
Watching /local/domain/0/device-model/22/command
Watching /local/domain/22/cpu
qemu_map_cache_init nr_buckets = 10000 size 4194304
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = 1ce296c3-b4ba-4f01-a181-734fe2df26da
populating video RAM at ff000000
mapping video RAM from ff000000
Register xen platform.
Done register platform.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
xs_read(/local/domain/0/device-model/22/xen_extended_power_mgmt): read error
xs_read(): vncpasswd get error.
/vm/1ce296c3-b4ba-4f01-a181-734fe2df26da/vncpasswd.
medium change watch on `hdc' (index: 1): aio:
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
Log-dirty: no command yet.
vcpu-set: watch node error.
xs_read(/local/domain/22/log-throttling): read error
qemu: ignoring not-understood drive `/local/domain/22/log-throttling'
medium change watch on `/local/domain/22/log-throttling' - unknown
device, ignored
cirrus vga map change while on lfb mode
mapping vram to f0000000 - f0400000
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is ro state.

The xl-testXpOn15g.hvm.log:
Waiting for domain testXpOn15g.hvm (domid 22) to die [pid 11237]
Domain 22 is dead
Action for shutdown reason code 0 is destroy
Domain 22 needs to be cleaned up: destroying the domain
libxl: debug: libxl_dm.c:761:libxl__destroy_device_model Device Model signaled
Done. Exiting now

Suggestions? I've used this XP install cd several times and know
it's good.

Another suggestion is to try creating a disk image to work off of using:

sudo dd if=/dev/sr0 of=/path/to/disk.iso

Then change the line for your cdrom to read:

'/path/to/disk.iso,,hdc,r,devtype=cdrom'

I know you said you've used the CD before, but the only times I have specifically encountered that error message with proper configuration was when the image file I was using had been corrupted. Just to be sure, try cleaning the disk, or making an image copy using dd or another utility of your choice.

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Re: [Xen-users] Cannot boot to cdrom (or file) using xl create for XP hvm