Incorrect number of bytes written to disk - Computers & Internet

Live with it :)

This is a never-ending story of billions of bytes versus gigabytes:

One 'proper' gigabyte is 1024x1024x1024 bytes = 1 073 741 824 bytes
Therefore 698GB = 1073741824 x 698 = 749 471 793 152 bytes = ~749.5 billions of bytes, which is advertised by manufacturers as 750GB, quite incorrectly, but better sounding from the marketing vievpoint :)

If you have a 32bit system, it is expected to have miscalculations, a 32 bits can only go up to 4Gb for calculations (that is, 2^32 = 4'294'967'296 bytes) a 64bit system can make calculations to 2^64 bytes this is also why you couldn't copy a file larger than 4Gb in a 32bit operating system...
So, if you are running a 32bit OS, you should expect a discrepancy for the total space of the Hard Drive and the amount it shows (that's the 93Gb you are missing as total capacity).
Another reason why it can show you incorrect calculations are damaged sectors on the hard drive it-self. These will present themselves either as occupied memory or missing memory.
So, you should expect some miss calculations and you can expect some damaged sectors on the hard disk (a external drive spins on and off too often, eventually damaging sectors... its a problem of physical drives).
In the end, your disk might be fragmented, so run a disk analysis and a defragmentation on the disk so it can recalculate.
A note: A disk is like a shelve, you put things where there is space, if you remove things, that space will be open, and if you want to put something there it has to be the exact size or small enough to fit there. This effect, when things are small enough leaves blank spaces unusable, consuming space on the hard drive and making the access of files slower, this is fragmentation. In order to expand your disk life expectancy you should run defragmentations...
To run a defragmentation, go to START, write "Disk Defragmenter", choose your disk and run and analysis and defragmentation.

Some flash-drives imitate a CD-disk (which, after being written and "closed", always show up as having "zero bytes free space"), in order to automatically run some software from the flash-drive each time that the flash-drive is connected to a computer. For example, that "auto-run" software may be a file encryption/decryption routine, requiring you to enter a password to access your files.
So, if you "lose" the flash-drive, whoever finds it cannot access your files, without having your password.

Each block of data written onto the disk is immediately followed by a few "extra" bytes, namely the CRC ("Cyclic Redundancy Check") bytes. The value of the CRC depends on the data just written.

When reading your data from the disk, the CRC also is read.
A new CRC is calculated from the just-read data.

If the "new" CRC does *NOT* match the "old" CRC, then you have a "file integrity" problem -- either your data was not written correctly, or your data could not be read correctly.

It's a sign that your disk-drive is "dying".
Make a copy of all the other files, and save your pennies, to pay for a new disk-drive.

It depends on how long the FORMAT took -- if it just was a few seconds, then what happened was a 'empty' table-of-contents was written, to make the drive appear to be 'empty', and nothing was written on the other 99% of your disk-drive. Thus, some "file recovery" software can be used to read that 99% and "stitch" together each block of data, to reconstruct the old table-of-contents.

Or, if the FORMAT took several minutes, then every block of data on the disk-drive was overwritten by a block of 'zero' bytes, making your data _almost_ unavailable. In that case, you need to find a 'friendly' federal agent (maybe Department of Homeland Security) to use 'advanced' techniques to read the 'residual' magnetism that is 'under' the block of 'zero' bytes, to recover the data.

Some CD burners are either "+" or "-" or both "+ -".

That said you will have to check what type of burner you have. Example, you cannot stick a "+" blank cd into a "-" burner, and visa versa.

However, if your cd burner can read and burn both types, you should be okay.

Most likely, it could be the amount of ram you have in your computer. If your running low on ram and it is using the virtual memory your computer can be running all the time causing a slow down in whatever you do. Check to see how much ram you have :)

if the disc is a DVD-R then you can only use it once no matter how much data has been put onto it, if you want to record onto a DVD over and over you need to use DVD-RW these can be re written over and over again.

Can you give me the model number so i can confirm it for you.
the basic is Hard drive manufactures calculate 1000MB=1GB
but windows calculate 1024=1GB in that case windows show you less amount, its the technical way to arranging the FAT table. most of the time you may not been ripped, if you can give me the model number i can confirm.

First u should format disk from disk management mmc snap or from command prompt.without formatting a disk's properties says 0 bytes used and 0 bytes free space.