Go to your Applications folder, open Utilities and it will be in there.
Or you can go to the upper right part of the desktop and open Spotlight and search for it.
In the Applications folder is a folder called Utilities. In the Utilities folder is Disk Utility. Disk Utility will Erase / Partition / Format a hard drive.
go to disk utility and you have the option to erase there
Use Disk Utility and Erase the disk.This also allows selection of formats other than the standard HFS+ Journaled formatting.Disk Utility can also Partition the disk, if you want to do that.
Open Disk Utility in the Utilities folder within the Applications folder. Select the external disc in the left hand pane and the formatting options on the right. If the external drive is only for use with the Mac select the default Mac OS Extended (Journaled) format.
If you download Linux to your mac, nothing will happen until you initiate the installer. If you want to install Linux but keep Mac OS also installed, you will need to partition your hard drive. This can be done using the Disk Utility application that is found in the Utilities folder of Application. Finder > Applications > Utilities > Disk Utility
Yes Deleting from your mac, frees up Hard drive space.
An installation cd/dvd is essential in order to repair the start-up disk. The Mac needs a booting platform & this cd/dvd provides exactly the same. One cannot repair the boot partition while initiating the system from it. Thankfully, there are couple of disk repair software such as Stellar Volume Repair and Disk Warrior that provides bootable disk if your installation cd is missing. You can boot from the DVD created by the software and then perform repairment with the help of these partition repair tools.
Built into Mac OS X is an application called Disk Utility, which can format and partition any internal or external volume. It's located in /Applications/Utilities/. Additionally, there are some third-party utilities that can work with partitions on-the-fly: iPartition, DiskWorks, and VolumeWorks all claim to do this.
FIXED DISK ALSO CALLED FDISK IS THE UTILITY THAT PARTITIONS HARD DISK DRIVE
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There are multiple programs out there that can formatt hard disks in certian types of ways to manage the hard drive. If you have windows and plan to install an windows operating system on it, hard disks are usually formatted by "Disk Management" system utility. The reccomended type is NTFS. If you have Mac OSX, then you format with "Disk Utility". "Mac OS Journaled" is the reccommended type of formatt
: in disk utility select your volume... then the blue info, you'll see Universal Unique Identifier... that's it.