I seem to be having similar problems to a few people on here. When trying to backup to PS3 HDD I get:
Disk /dev/sda doesn't contain a valid partition table
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sda 47.1GB
Disk /dev/sdb 4MB
mkdir: cannot create directory '/mnt/ps3hdd': file exists
mount: mounting /dev/sda on /mnt/ps3hdd failed: invalid argument
It still asks for a lable. But after that just says complete after about five seconds and returns to menu.
Would my PS3 firmware, the latest 1.8, have any effect on SAK? I did seem to get it working over the network share. It created the file but agian after a few seconds it sayes "killed" and returns to the SAK menu. I even left it doing a full format to see if it made and diffrence but agian the same "doesn't contain a valid partition table" message.
Any help/advice?