Bad sectors on HDD and SD card

whateverdude

Proper
Jun 21, 2018
68
0
140
1)Is it true that new HDDs automatically relocate the bad sectors and windows won't even notice them?

2)I got 5 errors today on event viewer saying
"The device, \Device\Harddisk5\DR5, has a bad block."
At the time i had 5 Disks connected and a SD card.
Is there a way to find out who is the Harddisk5 ??

3)When i take out my SD cards from android and i put it in windows(via a card reader) usually windows tell me that this card has errors and needs to be fixed.
I got used on those warning and i generally ignore them cause it works just fine in android and i don't want windows to mess it up.
Can it be bad sectors or do windows refer to file structure ?
Is it possible to fix bad sectors in android ?