i really dont know help please
Some examples of external hard drives are SATA,SSD,sea gate and western digital. These are not able to be downloaded, but can be bought online from electronics stores, or from physical stores.
That 128GB drive is actually an SSD not a Hard Drive and no it isn't possible to replace the internal drive in a mac
External hard drives for Macintoshes vary in price based on size and kind of hard drive. Solid State Drives (SSD) are more expensive than traditional hard drives but are much faster. Prices range from around $50 to hundreds of dollars.
One of the best rated external hard drives is the LaCie Little Big Disk Thunderbolt (1TB SSD), but its also very expensive. The price tag is around 1000$
It means that it has both SSD drive in for caching and frequently used files and plate-based hard drive for all other files.
The normal computer user should always have a primary hard drive and a secondary hard drive. Hard Drive are not designed to last past roughly 7 years and more often then not, they die or become damaged within 5 years of purchase. The 2nd drive should be used as a "backup" to protect your valuable information. The 2nd drive can be "internal" or "external", but it is important to have a drive that saves your critical data/information.
Hybrid hard drive
An SSD (Solid State Drive) is a type of hard drive that uses no moving parts, but rather stores data on Flash chips, similar to a Flash drive or CompactFlash.Solid State Drive
External hard drive prices vary depending on the size on the hard drive you want to purchase. The more storage space on the drive, the higher the price will be. They can be anywhere from $30 to $200.
A hybrid hard drive is a Hard Drive that has a SSD built into it also. There is currently only one manufacturer that does it- Seagate. The Hard drive is a standard 7200 rpm drive(in flavours of 250, 320 and 500gb) and the SSD component is 4gig. The 4 gig ssd does not sound like much but the impact it can have is enormous. It has some onboard chip that evaluates your running processes and then puts your frequently used ones onto the ssd. I have a mac with a 5400rpm drive. I swapped it out with a hybrid drive and the increase in speed is great. Much much cheaper than ssd's and in my opinion hybrid drives are going to dominate the market for the next few years until SSD prices come into line with current Hard Drives.
You can defragment an external drive connected to a computer running Windows by opening the disk defragment tool and selected the external drive. Though if the external drive is an SSD, there would be no point in defragmenting it or "rearranging files" as there are no parts that need to be moved before the file can be accessed.
HDD stands for Hard Disk Drive. SDD stands for Solid State Drive.