En el foro de xda dicen:
Clockworkmod recovery v2.5.1.8
E: Cant mount /dev/block/mmcblk0p1 (or dev/block/mmcblk0)
(No such file or directory)
E:Cant mount /sdcard
I think, you have Android 2.1 . You should to install first a froyo rom.
Que puede que tengas Android 2.1, igual si pasas a 2.2...
