Hello
i have a 1.5 Tb seagate disk (NTFS format)
when i check with crystal disk info it notices me reallocate sector count (12/36)

i still want to use this hdd for a short time more ,and i have some problems which i'm not sure about ,please help :

1. when i copying the data from this disk to other hdd ,i wonder is it needed to isolate/mark the bad sector (without formatting/recreating partition the disk ),
so that we can protect the bad data copied/writed (in my case the reallocate sector count has not reached thresold,is it needed ?)

2. is there anyway to know if the data is on the bad sector - when copying ,accessing ? (is there any error noticed ? )

3. i read some similar topic and found hdat2 and windows check disk tools ,but i'm not sure if them can isolate/mark the bad sector permanently
(such as when we format the disk,is the marked bad sector still isolated/marked ? (not included new bad sectors appear after scanning)
if using windows check disk tool ,should we use which ?
1. use tool=> option =>check disk
or use CHKDSK [drive letter] /F /R (i don't know if "/f/r" it's correct in my case ,please tell me which i should type in this case for best result
thank you

4. please tell me which program can isolate/mark the bad sector faster (if you know any better tool ,please tell me)
Thank you very much

If you want data from the drive, do not try software tools directly to the drive.
Make a clone of the drive and run recovery tools on the clone.

After you have recovered all the data , you can test the condition of the drive using MHDD and decide if you can use it or not.

If your data is important , take pro help.
Do not run tools like chkdsk on drives(which have data) with badsectors