Yes Kat I think OP means that previously the OS drive (Cclean: cleans first megabyt of physical disk. No parititiosn are listed.
clean all: whole disk is written by zero's. All information is gone forever.
What do you meand by saying "disk 1"? You mean the second physical hardisk in system? So you have 2 physical disks in system?
Why did you want to do clean?
Check the disk for errors. Is it a western digital or seagate disk?thanx for the replys. I wanted to clean the disk because of a recurring problem with fatal errors. I re-installed windows several times within two months, and each time the system would run for a while, and then crash. now when I try install I receive (cyclic redundancy check)message. any thoughts. thanks for the help.
Yep Kat cre8tor could run a surface (physical) test witht the Partition Wizard too.western digital disk use this WD Support / Downloads / SATA & SAS / WD Blue / SE / SE16 (SATA II)
seagate disk use this How to use SeaTools for Windows
SeaTools | Seagate (also tutorial there)