Hi,
Does this issue happen with different manufacture's external HDD drive?
I have 2 WD external HDDs (4TB - MyBook) and 3 Seagate external HDD (2TB - seagate). I did not plan to buy a lot of external HDDs, but unfortunately, I had to do.
I need to replace my iMac's internal HDD and I purchased WD external HDD (4TB) and I used this one for back-up through Time Machine. And 2nd WD external HDD, I planed to use just back-up documents and multimedia files b/c Time Machine takes a lot of time to back-up. I want to save time so I need the 2nd HDD to back-up for only selected files. And suddenly, some day, after I copied some file into the 2nd WD external HDD, all data of the 2nd WD HDD were erased when I connected it - and it was formatted HFS+.
I guess the cause of the identical UUIDs of both WD external HDD. First WD HDD was formatted by Time Machine, but the 2nd WD HDD was not - just factory default as NTFS.
I tried to recover the data on the 2nd WD external HDD, but my internal HDD did not have enough space, that was why I had to purchase another external HDD - Seagate 2TB external HDD.
But, you know, data of Seagate 2TB external HDD was erased again and it was formatted HFS+. And Mac OS detected the Seagate HDD as MyBook (WD). How can this happen?
I have done data recovery process several times and it happened again last night - even I turned off Time Machine feature. Since data on the 2nd WD external HDD was erased by something (Time Machine or whatever), I have not connected any WD external HDDs into my iMac, but how Mac OS said WD external HDD was connected when the Seagate external HDD was connected?
I am so tired to recover the erased data again and again. I need to finish to back-up of data from internal HDD before end of this year. Please help me to avoid this happening again.
Thank you.