so after several reinstalls and hours spent researching why my Airport no longer works, my SSD is up and running. i did not use carbon cloner as i was a) not sure how i would restore a 500gb mirror onto a 128gb ssd, and b) i was restoring from time machine i purchased a 128gb Samsung 830 SSD. the Nvidia MCP79 chipset in these macbooks has known issues with sandforce based drives, so i after research and recommendations from some members here, i decided on the 830. so far, im very happy, and recommend it if you can find it (i purchased from BuyDig for $119) i then purchased this caddy for my HDD and this external superdrive caddy the superdrive caddy came in very handy when i realized that i need a CD drive to do a clean install of snow leopard from a CD!!! once i got the clean install up and running, i botched the user migration from my TM backup, so i wound up re-doing the clean install. on the second try, the migration was a success. one thing i came across while reading around is repointing the home directory to look to my original HD - this allowed me to restore only my user and apps, and not any of my music, pics, or documents, as those still live on the original HD. the SSD will be purely a system drive. then the trouble started.... somehow i managed to botch the home directory, so i couldnt log into my user profile. luckily i made a backup admin account with a home folder on the SSD, so i logged into that, repointed the main account's home folder to SSD, reboot, repoint back to HD, and that resolved the issue. but then, WHAMMY!!! my wireless card disappeared from system preferences>Network. i spent the better part of this weekend trying to fix it. this is a fairly common occurence, but none of the solutions i found helped. i tried to reset PRAM and SMC, i deleted the preference files, and even tried another clean install. i still havent resolved this issue, and am worried that i have to get a new airport card and do major surgery on my macbook. until then, i threw a usb wifi dongle, and got online. so, was this headache worth it? with my 7200RPM WD Black 500GB HD, blackmagic showed me read and write speeds of about 89MB/s with the SSD, i am getting 197MB/s read, 246MB/s write ----------------------------------------------------------------------- now, i do have a question - since my Home folder is on my old HD, and that HD still has a bootable copy of OS X (i guess its yet another backup), is there any disadvantage in having all of the system folders such as Library, private, and System? all i really want there is my Users/<user> folder that contains all of my files. can i delete the old system files, or leave them as a backup?