I have a Mac MBA which has my Electrum wallets, old and new. I also have a hackintosh desktop on which I tried to install Electron Cash but it crashes on launch. Googling it results in pages of hits about BCH crashing on launch! Anyway, my question:
1. As precaution, I copy me Electrum wallets to a USB, delete them off my main user account.
2. Create and login as a new user and install Electron Cash there, and import the seeds/keys holding the BCH.
I'm guessing that should be safe? I tried accessing my main user directories from the secondary user account but, of course, I cannot. I'm wondering if that's only because I don't know how to really scan everything on a drive outside of a GUI, or is that pretty difficult even for super-smart malware hackers? Any other alternatives?
Just use it normally on yor primary login.
If you give them your seed and keys, they aren't really after much else anyway? If they were a hacker, they're not after searching through your entire disk for coins as you'd just load your keys into them.
To be safe, you could make another electrum wallet on your other computer, send the BTC across from your initial wallet and get electron cash running from the original mashine.
What may be useful to check is that, if you can't access the user files of the primary user, you are not an administrator on the system. And instead of the software crashing, you are unable to open it without the right privilages (normally any non-admin user must wait for an admin to open a specific executable file and make it avaliable to the other user before the other user can run it themselves - as far as I know).