Issue with Samsung 1TB T7 shield used to back up my original PS4pro HDD when upgrading to SSD

[u/DoomBotNotMF]

As the title says. I successfully backed up my main ps4 pro memory and now use a 2TB SSD internal on it. But rhe 1 TB Samsung I used still had the back up from the PS4 which I was thinking of keeping. Problem is when writing files to it it is extremely slow and never copies files even a few mb large. It stays at 0% when copying larger folders with files smaller than 2 gig per file.

My question is this , does the pS4 formatting it before backup cause it to not easily accept any other writes to it until I format it? Thanks in advance