Unable to Upgrade macOS to Big Sur
Using macOS Catalina on 2017 (Big Sur Compatible MecBookPro with 128GB storage. Have 19GB "free" storage, but 50GB in "other" storage. Cannot access "other" storage (greyed out), and unsure if safe to simply "delete" the 50GB which seems related to my Samsung mobile phone apps and Kies media transfer app (unsupported as 32bit app). Do I HAVE TO purchase additional hardware memory? If so, how much would that cost?