8 bad sectors now changed to 4 bad sectors?

WD Internal Drives Desktop & Mobile Drives
1

I have a Wd20EADS 2tb disk that started showing 8 bad sectors yesterday. Also it showed a Multi Zone Error rate of approx 6000.

Today the bad sector count has gone down to 4 ?!?!
And the Zone error rate shows 0??

The disk resides in a Synology 214 play.

Any ideas?

2

Hi surfer,

We recommend testing the drive with WIN DLG:
Software Download link: downloads.wdc.com/windlg/WinDlg_v1_31.zip

https://support.wdc.com/knowledgebase/answer.aspx?ID=940&s=

3

James, could you amplify on the Diagnostics operation?

If an extended test shows a few bad sectors, will they be marked as bad even if the window is closed instead of a repair attempted? Are the bad sectors reallocated at this time?

If the extended test is run a second time, will the bad sectors identified in the first run be excluded from this second run, such that the second run might identify no bad sectors?

And finally, once bad sectors have been identified and/or reallocated, is any further work required beyond a partition creation and format?

Thanks.