cant install amd64 4.99.63 due to device busy errors

[Mark Kirby <mark%fishladder.co.uk@localhost>]

Hi,

Im trying to install amd64 4.99.63 on my macbook, when i use sysinst  
it gets to the point of newfsing the partition but dies complaining  
the device is busy. So i tried a 4.99.22 installer which worked first  
time without any problems.

After installing i inserted the 4.99.63 cd and tried to upgrade, same  
thing device busy. Copying the new kernel of the cd and booting just  
ends with

vfs_mountroot: can't open root device
cannot mount root, error = 16

and 16 is EBUSY

Any one got any ideas? Should i file a PR?

Thanks

Mark