In Windows, it is called "C:" (without quotes).
In Linux, it is called "/" (also without quotes).
I don't know about Mac, sorry.
Most of the time it's C/ but you can rename it what ever.
If there is one partition in a hard disk and one CD device then the default drive letter assigned is D. Else, If there are two partitions in a hard disk and one CD device then the default drive letter assigned is E. Else, If there is only one partition in a hard disk and two CD devices then the default drive letters assigned to both CD devices are D and E.
Most of the time it's C/ but you can rename it what ever.
The default is C: that is the default drive letter, the default drive number is Disk 0
The default identity letter for the internal drive of a computer - is C.
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In Windows, it is called "C:" (without quotes). In Linux, it is called "/" (also without quotes). I don't know about Mac, sorry.
Default drive letter for a hard drive is C On my computer there were two hard drives installed, and the second was D CD drive is E USB ports are F, G, H, I, J, and K on mine
The default label for a internal hard drive is the serial number.
You have no hard drives listed. You have the ability to assign any drive letter (except the Main 'C' ) to your hard drives using "Computer Management"
Any hard drive can be assigned any letter. It is possible that drive Q could be a network location on another computer, or a virtual drive created by a program on the computer.