Yes, Surely it will remove everything on hard drive. Formatting a hard drive means to remove everything on hard drive. If you are formatting only a specific drive like C:\ or D:\ then the data in only that drive will be removed.
Low Level formatting will not destroy data in most cases. A full re-format most likely will erase all existing data and leave only the OS and FAT (file allocation tables).
No. Formatting it will erase all data!
oxymoron, formatting a drive is erasing the data.
To completely erase the data on the hard drive.
Access to the data on disk is faster.
It wipes out data on the hard drive disk.
Reinstall the operating system.
ATA Secure Erase, you can download a Secure Erase utility from the manufacturer of the device and run it to securely erase all data on the device.
Formatting a hard drive or memory card means to wipe it clean and prepare it for fresh data.
As data is saved to a hard drive, the free space lessens until the there is no more space for further data - the drive is full. I assume this is what is meant by the "shrunk" hard disk drive in the question? Formatting the drive will return the drive to the original size. Note: formatting doesn't actually wipe the drive completely, the data is still on the drive. Only the links to the data is severed, so the computer acts as though the drive is blank and it can write new data to the drive.
I hate to break it to you, but formatting a drive completely erases all data. There is a chance you can get your data back with a tool like http://www.ptdd.com/datarecovery/format-drive-recovery.htm
Formatting your hard disk for the PS3 will erase everything on it. If you are adding a hard disk to your PS3 it will prepare the drive for the system.
Degausser