Samsung Data Migration cannot migrate 393GB into 465GB SSD

[Aleksey_again]

It worked fine with these disks until source became 393/476 GB , after that it says that 465GB disk is now too small.

Please explain the logic of such event.  🙂

[Lingard87]

Are there any other volumes on the disk eating into the space?

[johnz237]

Click Windows key + Disk Management. Is any storage being used up or not yet partitioned? Have you given it a partition yet?

Disks can be weird sometimes. I ran into the same problem and had to delete all partitions on the new drive, then set it as one big partition; then it let me move it.

[JAMES4578]

Hi @Aleksey_again  Around 10% is reserved but should be ok, try setting up a partition as suggested.  some recommed keeping 15-20% free for the optimum performance but you still should be able to migrate.  some general information here   https://platinumdatarecovery.com/blog/fill-up-full-capacity

[Aleksey_again]

They both have 512 MB "Healthy EFI partition" ,

all the rest at destination is "Healthy Basic data partition".

The difference is that the destination is 465 GB and the source is 476 GB.

The Data Migration asks for additional 6 GB while the used space at source is 393 GB.

[Lingard87]

If you have a spare USB stick I'd just build a bootable USB with Clonezilla or some other disk cloning utility

https://clonezilla.org/show-live-doc-content.php?topic=clonezilla-live/doc/03_Disk_to_disk_clone

It's simple & quick, I've used it for years for network based device cloning

[Aleksey_again]

"delete all partitions on the new drive, then set it as one big partition"

no, this did not help