How to properly install Fedora 22 on SSD+HDD setup

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You don't say what you do with your laptop. I'm gonna guess you write some code, but maybe you don't compile kernels regularly.

256G is still a lot of space, and I can't see a reason why you wouldn't put a separate /home partition on your SSD.
I'd make sure to use LVM on both, but make sure they are different LVM volume groups. Then I'd make partitions on the SATA drive for projects; make them as small as you like: you can extend them easily with lvextend. Make a 256G /backup partition as I guess you want to be able to copy the SSD to the spinning drive. Alternately, put /home on the spinning drive and put your heavy data use projects on the SSD; what makes more sense depends upon what you do and how you operate. But, definitely use LVM: don't partition all the (LVM) space in advance.

I have the same configuration 256G SSD with /boot /root and swap partition and 1T sata where my /home partition is.

/dev/sda1 * 2048 1026047 1024000 500M 83 Linux /dev/sda2 1026048 436092927 435066880 207,5G 83 Linux /dev/sda3 436092928 468860927 32768000 15,6G 82 Linux swap / Solaris /dev/sdb1 2048 1953523711 1953521664 931,5G 83 Linux

I'm using xfs on /root and /home partition

Booting is really fast only thing is I encrypt my partitions using lucks

Hope this help.

This is what I have done. I formatted the hard disk as one partition. You may perhaps want to format it into two partitions. I did a default install to the SSD, and not using lvm and put everything into one partition (/, /boot, /home etc) After the first boot, as the administator I added the hard disk to the fstab (/etc/fstab)
for every entry therein, after default keyword I added noatime default,noatime Swap was retained on the SSD. I also added the UUID= for the hard disk partition(s), naming the partitions On one partition I created a /Downloads /Documents, /Music, /Pictures Now, on my ~ directory I rmdir'd Downloads Documents Music Pictures and replaced those by symbolic links My first partition on the hard drive I titled /hdrive1, my second partition /hdrive2 from my ~ (home directory) I created symbolic links as follows

ln -s /hdrive1/Documents Documents ln -s /hdrive1/Downloads Downloads etc for Music, Pictures,

I also added a root owned crontab entry to run at a time when I would be on the computer as follows. 30 9 * * mon,thu /fstrim -a

Thus, I can reinstall to the SSD at anytime and with a few symbolic link changes, replace Fedora with an upgrade.

You may want to consider a Full Remix of Fedora 22 titled Korora Linux or Chapeau Linux . These two provide all the codecs that you would want to struggle to install after having installed Fedora 22. A remix is Fedora22 with the best extras included.

Second consideration. The SSD drive will more than ilkely outlast your hard disk by 3 to 4 lifetimes. If your SSD survives the first week or two, it will provide you with 8 to 10 years of reliable service. You will probably scrap your computer before the SSD dies on you.