Spoiler: There will be a YES answer at the bottom of the post
Short answer:
NO.
Medium-sized answer:
NO, because
there are 2 processes that want to access one ressource (the hard disk) at the same time. Each process will read different data, so the head needs to jump to the place where the process needs data from the platter. This jumps take a lot of time and decrease the total throughput of your hard-disk a lot!
Long answer,
because you seem to lack some (basic) understanding of the working principle of a hard disk:
NO, because
your spinning platters hard drive behaves like a book.
Imagine that you have a book with only empty pages. That's your hard disk when you buy it. No data stored on it.
Then you put it into your computer (let's say as a 2nd drive, so we don't have to deal with the operating system here).
When you write a long text document (called 'text A') and save it on the disk, then it's like writing the first 10 pages (pages 1 to 10) in your book. Then you copy a jpg picture onto the disk, that's like make a drawing of your house on the next 5 free pages in your book (p. 11-15).
The table of content of your book now has 2 entries:
- text A: p. 1-10
- pic of house: p. 11-15
All data on your hard disk can be erased again, that's why you have written and drawn everything with a pencil, and not a ball-pen.
Now you write a shopping list into your book: p. 16-17.
Next, you don't like or need that drawing any more and want to erase it, so you remove it with a rubber. Pages 11-15 are blank.
Your TOC looks like:
- text A: p. 1-10
- shopping list: p. 16-17
Now you want to draw an image of the local supermarket, which is bigger than your house. So you need 12 pages. You could start at page 11, which means you'd have not enough consecutive pages and you need to continue at 18, or you could start at 18 and have enough space to draw it in one go.
Most or all operating systems are smart enough to choose a chunk of free space that is large enough for the whole data, but if there is no sufficiently large free space, it will have to divide the file into smaller pieces that fit into the existing free areas. This is called Fragmentation.
Let's imagine you also need to do that. Your TOC looks like:
- text A: p. 1-10
- pic of supermarket, fragment 1 of 2: p. 11-15
- shopping list: p. 16-17
- pic of supermarket, fragment 2 of 2: p. 18-24
Now we start READING the book.
You want to know the items on your shopping list. The TOC tells you to go to page 16. You start reading until you reach the bottom of p.17. Done.
Next: you want to see how the supermarket looks like where you want to go shopping. The TOC tells you to go to p.11 (you are on p.18 (= end of p.17) and have to browse 7 pages back. On a hard disk the read-write head needs to do a jump. Then you start reading until you reach end of p.15, then you browse to p.18 (head jumps again) and continue.
Browsing in a book takes less time than reading, but on a hard-disk it's almost the other way round. The head cannot just move to the next track/cylinder, but has to 'search' the correct cylinder (acceleration, motion, deceleration, settling time). See Wikipedia. So due to fragmentation your reading takes longer than if the file was stored consecutively.
And now, we do READING WITH 2 PEOPLE:
You want to see the supermarket image and I want to read your text A.
You browse to page 11 and start reading.
When you have read p.11, I browse to p.1 and start reading.
When I have read. p.1, you browse to p.12 and continue reading.
When you have read. p.12, I browse to p.2 and continue reading.
...
you can imagine that it takes a lot longer to read the pages just because the many browsing takes so long.
Same with your hard-disk. You can't do nothing about it but avoiding simultaneous access as this always makes it slower.
Now, finally, the YES answer:
YES: Buy a SSD.
This is a electronic disk and it operates like RAM, so you have almost no seek times and the total throughput is always close to the maximum possible throughput (if there are no other bottlenecks elsewhere).
