I have experienced a problem (a forbidden sign) so I booted with the install CD (on a iMac7.1). The disk utility didn't do, so I tried formatting the disk to start again, and it hasn't worked either.
Now from the terminal if I type
#: type name size identifier 0: *298.1 GB disk0
and the DVD
/dev/disk1 #: type name size identifier 0: Apple_partition_scheme *5.1 GB disk1 1: Apple_partition_map 31.5 KB disk1s1
I tried to format disk0 but it returns errors…
what should I do? My goal is to put it in state where I can run the disk installer and reinstall the system..
To format I first used the diskutility, but it returned an input/output error. Then I tried from the terminal
diskutil eraseVolume "Journaled HFS+" ABC disk0 Started erase on disk disk0 Erasing MountingDisk Finished erase on disk disk0 error with erase The underlying task reported failure on exit (-9972) Finished erase on disk disk0