Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicates:
How much does a gigabyte weigh on a hard disk?

And the same question on CD-ROM, floppy disk and Flash drives?

share|improve this question

closed as not constructive by Tom Wijsman, bwDraco, studiohack Nov 1 '11 at 1:53

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

Related:… – bwDraco Nov 1 '11 at 1:52
Perhaps a gigamount. – Xavierjazz Nov 1 '11 at 6:07
up vote 1 down vote accepted

No. The data on a HDD is stored in bits. These bits are essentially magnetic switches that are ether at 0 or 1. so there is no weight loss or gain each time data is written because the switch doesn't move, just the position.

For a CD, essentially a laser change the color of the CD track, almost like a switch being changed from a 0 to a 1. However because in the majority of cases this is done through a process of burning, the effect is irreversible.

I don't know about floppy disks.

share|improve this answer

I wouldn't think so, given that hard drives simply rely on a pattern of magnetization to store the data. As data is not physically transferred to the platters, the drive cannot increase in mass. The same goes for CD-ROM, floppy disks, and flash drives.

share|improve this answer
@DragonLord But where would the mass go on a sealed CD-R for example? – AndrejaKo Nov 1 '11 at 7:56
@Dragonlord: the pits on mass-produced CDs are pressed - the matter is merely displaced, not removed. The "pits" on CD-RW are areas of alloy heated by high-power laser until they change from a reflective polycrystalline state to a darker amorphous state, no matter is removed. – RedGrittyBrick Nov 1 '11 at 10:10
I'm sorry for this mistake. The comment relates to CD-R discs only. – bwDraco Nov 1 '11 at 12:58

Not the answer you're looking for? Browse other questions tagged .