Unmountable Boot Volume error

When you reboot and hold down the Option key, does the OS-X drive show up?

I have the same problem, what's the deal with this?

Yes, OS X boots and works fine.

I am having similar issues, but I'm still working on the main reason for the problem. We are trying to install Windows XP from our network installation system using WinPE.

If I format the drive as GUID partition table XP crashes with the UNMOUNTABLE BOOTVOLUME error...pretty much sounds like the installer doesn't understand GUID even though it is an XP Professional Service Pack 2 install base.

If I format the drive as an MBR partition table XP will load fine, but then I have the issues where the OS and OS chooser screen don't see the Windows partition as a bootable partition, and then I have to use rEFIt to boot into Windows.

If I install Windows XP from the same CD that I created the network install source files from the OS will load just fine on a GUID partition table.

So I, too, am having this same problem, but I'm trying to figure out what's different between the source CD and how the network install tools for unattended deployment change it.

You are using an install CD that is Windows XP with Service Pack 2, correct?

I ran into exactly the same problem !

Installing from network on a GUID partition map will always result in that same blue screen, changing the map to MBR is working.

With a SP2 CD the installation will always work, regardless of the GUID/MBR map.

Could you find anything out with regards to this problem ?

I have also tried to slipstreem my SP2 installation source to SP3 beta.
This unfortunately resulted in the same problem.

I'm having a similar problem...

I purchased a new installation CD of Windblows XP Pro SP2 to install a bootcamp volume on a brand new iMac. First it wouldn't install to the FAT32 formatted bootcamp partition, so I found the article advising a reformat which is unfortunate, because I really wanted to be able to SEE the content on the PC drive, and there is no FAT32 option on SP2 installations disks that I know of. After formatting the drive it goes through the motions but eventually comes to UNMOUNTABLE BOOTVOLUME BSoD. Eventually I pulled an SP2 Corp XP Pro installation disk from a previous employer. It installed to the reformatted partition just fine, but is not a legal copy so I tried an "Upgrade" installation from the retail box again with the same results, BSoD. Anybody have an clue or a utility work around? I didn't have any such problems on my MacBooks, only my new iMacs. Anyone?

I have a FAT32 format, 32G boot camp partition, Home XP SP2 to Professional XP SP2 upgrade. on a MacBook Pro Core 2 Duo. No matter how I approach the upgrade I get this UNMOUNTABLE BOOTVOLUME blue screen.

So, we have what seems to be the same problem.

Does anyone know why or what the work around is?