Linux slows down on macbook13 - wtf?

Question

linux

It so happened that I had to reinstall from the old to the new HardDisk. Question about installing wasps, started with macos liv- writes that installation is not possible!
I scored on that poppy OS 10.6.8 - I remembered that I have a favorite Ubuntu, installed it.
For some reason, it was not possible to merge all the broken sections into 1 whole. (HDD removed from old Asus 160GB) with windows 7 Ultimate *.
So, I installed it, updated it, everything is OK, but now it starts to lag!
1 GB of RAM for 512 two boards and HDD for 160 - Samsung
Old was a fujitsu for 120 GB. Restore failed
How to improve performance?
1120 mb swap file

Answer 1

And why shouldn't he slow down on such ancient hardware?
Ubuntu is extremely gluttonous, 1GB of RAM GDM \ Unity eats like crazy. Install something simpler like XUbuntu\LUbuntu. Are you sure that your new (old hard) is really alive normally? That it does not overheat in a macbook? And does it have more / less speed than the native one? Does it have more/less cache?
First try to install Internet recovery by Command+Option+R at boot.
Write the specific model of your macbook.
PS: fix.

Answer 2

Correctly, she writes to you, for you a clean installation disk should be