In you have yet to find a way to SE using PartedMagic [PM] because of the “Sleep” issue, try the following:
Once you’d booted into PM and went onto Internal Tools > Erase Disc
do not go headlong into the option whereby PM offers you the opportunity to “Sleep” if only because your PC’s sleep capability is different to what PM is expecting/demanding. IE where your PC goes into some frenzy of a sleep because PM had tickled its fancy.
Just get into the window/option which highlights your SSD for ticking/checking - but do not tick/check that option. Just opt out of SE and back to PM desktop and turn/disconnect OFF and then ON your SSD - via, at worst, disconnecting and then re-connecting the SSD signal/SATA cable - with the PC/PM running.
Now go back and select PM’s Secure Erase again [make sure you’d selected the “Secure Erase” option and not the other 4 options] and PM will not only see your SSD but will allow you to proceed to securely erasing your SSD without any attempt to “Sleep” with your PC again.
