El Capitan Unibeast 6

[sheshanth77]

Try another usb drive. It works for me.

i tried in 5 different USB didn't work

 

[sheshanth77]

It's because the drive isn't big enough. Tried a couple of times on the same drive and got the "Couldn't copy base system" error. Noticed that formatted it was 7.3GB in size. Tried another one and it was 7.5GB and the installer finished. Think the new size minimum must be about 7.4-7.5GB and anything smaller will make it fail. Don't have anything bigger than ~8GB in size to try, but the second one I used worked.

Finishes up with the main partition with about 105MB free and the EFI partition at ~207/278.View attachment 153267

i tried in 32 gb didn't work

 

[LuckyAced]

Hi,

I got the error "Couldn't copy base system" I tried different USB's but didn't work.

After some searching in the system log I found that the Applications "CleanMyDrive 2" and "Wimoweh" where interfering with the mounting of the OSX Install Volume.
So I quit the Applications and then it work!