[Grml] Hard drive partitions not seen

Hi list,

I've booted up my Dell laptop using a USB flash drive with GRML on it. However, I cannot see any block devices for the hard drive partitions. The only sdX devices I can see are sda1 and sda2, both for the bootable USB drive itself. To be clear, lsblk -a doesn't show any other sdX devices than sda.

I would appreciate any tips regarding how I can make GRML see these partitions since I would like to make backups of them using gparted.

Thanks,

/David R.