Question Do I need to do anything before attaching my old Sata SSD and HDD to my new system ?

[eziowar]

Hi, i just fresh installed windows 11 on my new m.2 ssd and windows named it drive "C" as usual.. but i already had an old sata ssd and it also was drive C and it has my old os windows 10 and i also had a 1 TB hdd which hd 3 partitions- D,E,F. now since installed that new m.2 SSD into my system i haven't connected that old sata SSD and HDD to my system. But now i wanna connect that sata ssd and hdd to my system. my hdd has all the important files which i dont wanna lose so i dont wanna format that hdd but i want to completely delete everything on my old sata ssd . Now what should i do to use all those storages in my system without losing data from HDD but erasing everything from that old sata ssd ?

 

[geofelt]

Insure that your boot order points to the new m.2 ssd with the C drive on it.
Past that, you should be able to read and delete any of the files in the extra two attached devices.

 

[eziowar]

Insure that your boot order points to the new m.2 ssd with the C drive on it.
Past that, you should be able to read and delete any of the files in the extra two attached devices.

having "C" assigned to that old ssd as well wont be an issue?

 

[rgd1101]

you mean the label?

 

[eziowar]

you mean the label?

yes

 

[CountMike]

yes

It's assigned letter by OS and it doesn't stay with disk so when you connect it it will get another letter, not C. Letter is assigned to a partition, not whole disk.
Assigned letter is not same as Label which is a name you give it and that stays with disk until formatted. OS is always on a C: partition, all others can be changed.