Trevor Furnell
2006-Jul-09 23:47 UTC
[Xen-users] Problems with root=?? with hdb and Windows XP.
Hi;
I''m having trouble getting dom1 to start.
As expected I''m not doing things the easy way.
I have a second hard drive in the machine that
has WindowsXP installed on it. The drive was
formated as fat32.
The error I''m getting is.
------- start --------
VFS: Cannot open root device "hdb" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
<c0418394> panic+0x3c/0x188 <c0651ac1>
mount_block_root+0x1e0/0x1ee
<c0651b18> mount_root+0x49/0x4e <c0651bea>
prepare_namespace+0xcd/0xfe
<c0402242> init+0x206/0x2c6 <c0404a3a> ret_from_fork+0x6/0x14
<c040203c> init+0x0/0x2c6 <c040203c> init+0x0/0x2c6
<c0402989> kernel_thread_helper+0x5/0xb
---------- end --------
My config file is.
--- start ------
name="Windows-XP"
kernel = "/boot/vmlinuz-2.6.17-1.2145_FC5xenU"
builder=''linux''
memory = 1024
vcpus=1
pae=0
acpi=0
apic=0
cpus = ""
root = "/dev/hdb ro"
disk = [ ''phy:/dev/hdb,sda1,w'' ]
on_poweroff = ''destroy''
on_reboot = ''destroy''
on_crash = ''destroy''
device_model = ''/usr/lib/xen/bin/qemu-dm''
sdl=1
vnc=1
vncviewer=0
dhcp="dhcp"
---- end ----------
not sure if this is relevant but
an fdisk -l shows
-------- start ------------
Disk /dev/hda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 30401 244091610 8e Linux LVM
Disk /dev/hdb: 203.9 GB, 203928109056 bytes
255 heads, 63 sectors/track, 24792 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hdb1 * 1 24792 199141708+ c W95 FAT32 (LBA)
-------- end ----------------------
a pointer to a good web site explaining the
root=?? line or just a straight out fix :-)
would be muchly appreciated.
--
Thanks.
Trevor Furnell
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