On win 8.1 64bit, I have a weird behaviour:
when copying large (> 30gb) files to an external hd drive, I get an error message from TC. After that, the file is available on the drive, apparently fine.
The drive is attached via usb 3.0, formatted using MBR and a big ntfs partition (>900GB).
The internal hdd is an ssd, formatted using EFI and ntfs.
The files are Truecrypt volumes; I dismount them before copying them.
The TC copy options are set to 'default mode'.
The thing is annoying because I do not trust the copied file, and running a byte-by-byte comparison after the copy takes a long time.
I am not sure when it started happening, nor if it is a TC problem, a windows problem or a hw problem (dell xps15 rev. 9530).
Did anyone else experience something similar?
[solved] error when copying large files to external drives
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[solved] error when copying large files to external drives
Last edited by ggiunta on 2015-05-17, 09:37 UTC, edited 1 time in total.
I finally sorted it out - testing with different disks and cables, and using windows explorer for copying I was pulling my hair off until noticing that two of the usb ports on the laptop are in fact usb 2.
There must be a firmware bug somewhere that makes large files transfers fail for usb3 disks connected to usb2 ports.
I don't remember the exact error message given from TC, but the worst results happened when trying to copy data directly from one external drive on usb3 to another on usb2: the drive would keep disconnecting.
When connecting both drives to usb3, all file copies succeed.
There must be a firmware bug somewhere that makes large files transfers fail for usb3 disks connected to usb2 ports.
I don't remember the exact error message given from TC, but the worst results happened when trying to copy data directly from one external drive on usb3 to another on usb2: the drive would keep disconnecting.
When connecting both drives to usb3, all file copies succeed.