Mac laptops may likely have solid state drives (not hard drives). Those drives are 2.5" form factor and can be replaced by hard drives.
Yes. SSDs (Solid State Drives) are still much more expensive per gigabyte than magnetic hard drives, so they are still uncommon in desktops and mainstream laptops.
Not all portable hard drives work with every laptop. Some portable hard drives are formated for specific types of laptops. For example a portable hard drive that is formated for a Mac cannot be used with a windows laptop
Yes, most all 2.5 hard drives will work in most laptops.
The first hard drives were only a couple of megabytes, while modern hard drives are 3TB and beyond. As technology progresses, hard drives will likely continue to increase in capacity. Therefore, not all hard drives are 2.5GB in size.
They all store information.
a hard drive is what stores all the files on your pc.
Mini laptops and netbooks are available all over the place. You need to settle on features that you want -- small size, weight, hard drive space, ability to connect to CD/DVD drives, etc. and then base your decision on what fits your needs and meets your budget.
the hard drives can be switched and what ever was on them will stay on them.
No. 1. Some computers don't even support hard drives. 2. Not all of those that do will have a connection for an external one. 3. Not all external connections are the same, so even if one is present, it can't be used with a drive that uses another connector (unless that connection is also present). For instance, you can't use an eSATA drive with a USB port, and you can't use FireWire with an eSATA port. 4. Not all operating systems support portable hard drives connected to a particular interface (though this is increasingly rare).
Most notably, new Apple laptops come with the Snow Leopard, the latest version of OS X and all the updates and programs that come with it. In addition they have larger hard drives, more powerful processors and more system memory than previous versions.
All computers use a hard drive to store programs and files.
There are several online websites that offer replacement notebook hard drives. Staples, Computer Shopper, Amazon, Newegg and Comptick all sell replacement notebook hard drives.