Error 0x8007045D with External Drive

[TDKMate]

I Googled this but didn’t find much related directly to my problem. I did find a ton on this error for installing Windows, backing it up, and the like.
What I do every so often is copy all my photos to an external HDD for a simple backup. They are all in one partition with some home movies files mixed in. Been doing it for many years by using Windows Explorer to simply highlighting all folders on the drive, and copy them over to the external drive.

This time, though, with about 130-135 GB left out of 880 GB, I started getting the error. At first the error was popping up fairly frequently. So I ran chkdsk on both drives from Properties: no errors found. Things started going as expected again for a few minutes, then the errors started again.

However, every time I did something to ‘activate’ the external drive, like Search for a file, the errors would stop for a while.

Remembering older Windows had a setting somewhere to copy either ‘fast’ or ‘secure,’ after I was done with things, I couldn’t find such a setting. I’m suspicious that, since it took many hours, and near the end of the copy job, that a cache or the like was getting saturated or the like, or maybe something started timing out (like the USB port taking a nap).

In the end 56,128 Files, 800 Folders out of 63,035 Files, 851 Folders were copied. That’s roughly 35 GB not copied, and I have 117 GB free space left on the external drive, so I didn’t run out of room.

Any ideas on the error and what to do about it??

External Drive Specs after copy:
Seagate GoFlex Desk USB Device
Heads 16
Cylinders 45,600
Tracks 11,628,000
Sectors 732,564,000
SATA type SATA-III 6.0Gb/s
Device type Fixed
ATA Standard ATA8-ACS
Interface USB (SATA)
Capacity 2794 GB
Real size 3,000,592,977,920 bytes
RAID Type None

Partition ID Disk #3, Partition #0
Disk Letter I:
File System NTFS
Size 2794 GB
Used Space 2676 GB (95%)
Free Space 117 GB (5%)

 

[Megahertz07]

As you're copying a large amount of data, your computer may be entering sleep mode. Set the power config (Control Panel\All Control Panel Items\Power Options) to High Performance (see if Put the Computer to Sleep is set to Never).

Edit: removed the link as it has a trojan

Instead of using Explorer drag and drop, create a cmd file using Robocopy (create a txt file with the command line below and then rename to .cmd)
Robocopy does not copy open files, so make sure they aren't open (in use) by any program.
By default Robocopy will only copy a file if the source and destination have different time stamps or different file sizes. This property will assure that only new files and folders will be copied, being much faster on an update.

Robocopy C:\(path) I:\ /mir

C:\(path) - Is the source path (C:\users\Name\pictures\...)
I:\ - is the target disk and path
/mir - Mirrors a directory tree

robocopy | Microsoft Docs

 

[TDKMate]

Thanks Megahertz07. I'm going to be giving Robocopy a try the next time I need to 'backup' my photos.