SOURCE: Unable to access external WD 500 Gb drive: "You need to format the disk"
I have battled this for a few days. Your mentioning USB leads me to a possible solution.
I had a 500GB drive and put it in the USB enclosure and could only see 128GB one time, 138GB another. I found that external drive enclosures have their own IDE controller chips with older ones limiting the size of the drive they are able to "see".
The best test is to internally mount the drive (perverts will read this differently than intended and risk injury due to shock!) to make sure it can be seen. If so then the next best step is to spring for a new drive enclosure, one that supports the higher capacity drive. It worked for me! My old external enclosure's IDE controller could not handle the higher capacity drive and the new one was perfectly happy with it. Good luck! - Andy C
SOURCE: wd 320 external hdd acting up
WD has had issue with eir enclosures if you fixed the partition there is the possibilityt that you lost information in the process.
On thisng that you can do is remove the drive from the current WD enclosure and buy an new one. Then try to see if youa re able to locate any of your files. Also check to see if it reports any available space if it still does not then the actual hard drive hase the issue and you will need to buy a new one.
SOURCE: why wont my wd elements 1 tb hardrive work on my
errrrrr follow timhunts jr advice and reformat it to fat32 or partition say 500gb or however much you want to fat32, ignore rjhahn random answer......
SOURCE: External disc drive has stopped
It seems something happened to file allocation table of the disk partition, you could use a partition recovery suite to fix this, one good is Easeus Data Recovery Wizard or any similar suite that you know, good luck.
SOURCE: Hi, I have WD 1TB
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.
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