memory cache is on memory RAM, disk Cache is on the hard drive. They make things to get faster. For instance Google Earth use this disk cache to show you offline images.
what is the defference between cassette tape and hard disk
The hard disk is the device that stores the folders.
Volatile Memory requires power to maintain the stored memory. Eg. Random Access Memory (RAM) Non-Volatile Memory does not require poer to maintain the stored memory. Eg. Hard Disk, Compact Disk, Flash memory.
absolutely nothing
THE DIFFERENCE BETWEEN A PERMANENT HARD DISK DRIVE AND A REMOVABLE HARD DISK DRIVE A permanent drive is in housed in the system while the removable one is externally fixed. Basically they perform the same functions.
A hard disk is a Sequential Access Memory device or SAM
There is difference between SATA and PATA HDD but no difference between the formatting..
a lot
memory
magnetic tapes are cheaper
The size the virtual memory is determined by the size of the page file which saved in your hard disk. Virtual memory only uses the hard disk.