On Fri, Aug 10 2012, Alan McKinnon wrote: > On Fri, 10 Aug 2012 10:25:51 -0400 > Allan Gottlieb <gottl...@nyu.edu> wrote: > >> I am getting a new laptop from dell that will dual boot windows (in >> case I need dell maintenance) and gentoo (real work). I have done >> this often, but there are three new aspects this time. >> >> 1. ssd. >> 2. new udev (/usr part of boot partition?) >> 3. grub2. > > I have one of those. But I decided to stick with traditional DOS > partitioning style and grub instead of GPT and grub2.
I am leaning toward traditional partitioning, but with grub2. Do those two not mix well? >> The laptop will have a 256GB ssd. Can I partition it the same as I >> would have for an hd? Are there extra alignment considerations? > > I don't know of any special partition considerations. Just start at > the 1M mark and align on 4096 like you would for spinning disks. Dell normally has a special partition of size > 40MB starting at sector 63. Presumably I ignore that one. I would then align the used-only-for-dell-diagnostics windows partition and all linux partitions at multiples of 4096 > What you will need is TRIM support and for that you use ext4. Just add > "discard" to the mount options for the ext4 volumes. Ah so I will now be using ext4. The mount man page says trim is off by default waiting for more testing. But I will try it. > You also don't need an IO scheduler - ssd access is random like > RAM, no heads moving in and out so no sector ordering to worry about. > Configure the scheduler as NOOP in kernel config if all drives are ssd's I believe dell with be "throwing in" a removable spinning disk that can be user swapped with the dvd so I should probably keep the I/O scheduler. thanks for the help, allan
