How to make Mac sleep with external disk connected & wake up without errors?

[ranjan2001]

I had got my Backup disk corrupted with in 3 months & now I have got a new disk under warranty but the same problem exist.

I have one NTFS seagate 3.5 inch disk connected which remains powered & will only spin if I am accessing some data from it, if not then it stops spinning & sleeps fine when I put the mac mini to sleep at night & wakes fine when I wake up the Mac mini.

New Seagate Backup plus disk is ExFat & it remains spinning even if no files or background task is being done from that disk, when I put mac mini to sleep & wake up I get error "Disk Not Ejected Properly"

Is it a mac problem?
https://forums.macrumors.com/thread...computer.2321141/?post=30563947#post-30563947

Or Is it that I have to eject the disk before I put the mac to sleep?

Need solution to this problem.
Thanks

 

[Fishrrman]

I'd suggest:
- eject the drive before you put the Mac to sleep
- if the drive is backup ONLY for Mac, use a Mac format instead of NTFS or exFAT.
- use HFS+ (Mac OS extended with journaling enabled, GUID partition format), or, APFS (if the backup utility requires that).