2T HD - Slow USB transfer speeds, but fast as SATA

  1. Posts : 124
    Win 10

    2T HD - Slow USB transfer speeds, but fast as SATA

    I have a WD 2T HD 7200 RPM. Plugged in as a USB drive, the transfers speed is 7mg/sec, but if I use it as an internal SATA it's about 190mg/sec. I've tried 3 different USB interfaces with the 2T drive with the same results. Other USB HD's that I have aren't slow like this one is even with the same USB interface.

    I have it set for better performance not quick removal and indexing is turned off. I bought this drive as an external USB HD and itís 2.0 USB. I put it back in itís original case and that didnít help. It certainly wasnít this slow with XP or WIN 7. Any suggestions?
      My Computer

  2. Posts : 171
    Windows 10 Ent, Pro & Home

    SATA is a lot faster than USB 2. You would need USB 3 to be closer to the speed of SATA.
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  3. Posts : 124
    Win 10
    Thread Starter

    Of course SATA is faster than USB 2.0 7mg/sec is not even close to my 4 other USB hd's which are about 30-118 mg/sec This slow USB HD was much faster in Win 8. I did create a boot partition and tried to use it as a boot drive. I later deleted those partitions and now it's one big partition. I wonder if I should reformat it or format it as GPT?
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  4. gijoetech1's Avatar
    Posts : 121
    windows 10 pro

    thats the most intelligent thing i like about GPT stores multiple copies of this data across the disk, so it’s much more robust and can recover if the data is correupted. GPT also stores cyclic redundancy check (CRC) values to check that its data is intact — if the data is corrupted, GPT can notice the problem and attempt to recover the damaged data from another location on the disk. MBR had no way of knowing if its data was corrupted — you’d only see there was a problem when the boot process failed or your drive’s partitions vanished.
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