slackware 10.1 can't see partition table
Sorry if this was posted before, I did search but couldn't find an answer.
My Slackware 10.1 installation can't see my partition table. When I use cfdisk it says something like its read only. Slack 10.1 setup says that there are no Linux partitions and that I should make one. I had a Slackware 10.0 installation before I formatted it, and installed Ubuntu Linux. Their installers (Ubuntu and slack 10.0) saw all partitions and I can even see my Linux partition from win xp. Drive is SATA but Slack 10.0 installation went without any problems on that drive. The only thing I didn't try is to boot partition magic and try to reformat ext3 partition, but why it can't see other partitions like swap and ntfs?
thanks for any response