Mitsubishi Electric Apricot LS Owner's Handbook Manual page 21

The primary hard drive
The majority of computers are supplied with one internal or
'primary' hard disk drive (HDD) designated as the C: drive. The
operating system will normally be installed on this drive.
Data is stored on the HDD in Directories and Subdirectories, often
referred as 'folders'. More details on directories and folders will be
found in the Windows guide, as will information on Windows
utilities.
The HDD will have only one active partition i.e. the bootable disk
but larger HDDs may be supplied with more than one partition.
Partitions are like dividing panels or false walls in a large office, they
cut the area into smaller sections, each one then becomes almost
independent.
A secondary hard drive
Caution
Apricot Computers Ltd have tested many types of hard disks from a variety of
manufacturers and all of our upgrade parts are guaranteed. The quality or
compatibility of components obtained from any other source cannot be
guaranteed.
Computers with an IDE interface can have two HDDs, the primary
drive being designated as the Master and the new drive becoming
the Slave. The Apricot system BIOS is capable of handling this.
Any slave drive will be supplied completely blank, but will be
complete with its fitting instructions. Fitting and setting up a second
hard drive is not difficult. If you do not feel confident about
installing a second hard drive you may wish to have your supplier or
an authorised engineer complete this task for you.
Installation
Switch off the system and remove the cover. Take care to observe
anti-static precautions at all times while the system cover is removed.
Further details on antistatic precautions can be found in appendix A,
'The system unit.'
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