03-18-2015 09:34 AM
Good afternoon -
I have seen some other posts that nearly address my question, but none directly.
On the x250 - there is the option for what Lenovo calls a "Micro Hard Drive". It appears this is intended for caching data to improve general system performance - especially for those that have non-SSD drives. The default size from Lenovo is 16Gb.
My question is the number, type and size of those slots. Will a standard M.2 drive fit in those slots? I saw another thread that talked about only using an M.2 size 2242. My idea is to install a 128Gb M.2 SSD (if that capacity is available in that form factor) as the bootable OS disk. I would then use the 500Gb HDD as a data drive, so to speak.
Is it possible to designate an SSD in one of those M.2 slots as the "boot" device?
Thanks in advance!
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03-18-2015 10:22 AM - edited 03-18-2015 10:22 AM
First, I don't have an x250 to test with. Starting with the "40" machines, there is an m2 slot that appears in the BIOS startup list as "disk 3". I use a W540 that also has an M2 size 2242 (22mm X 42mm). It came with nothing in the slot, and I put in a 256GB SSD and I boot from it. The one I bought, costs about $110 from Amazon.
Please note, I am not recommending a particular seller, but my drive works well for me, and Amazon has a good return policy.
04-28-2015 04:56 PM
I too have it installed as my OS/application drive - works great.
Coming from a W520, I was skeptical of whether this X250 would do the job for me - but other than some speedbumps working with Lenovo support, the heardware itself has exceeded my expectations.
11-24-2017 04:08 AM
Sir, I have Thinkpad x250 & recently install the Sierra EM7345 4G LTE WWAN card in the M.2 SSD slot by removing the SanDisk 16GB M.2 NGFF SATA card that came pre-installed. Then I purchased an external SSD case & inserted SanDisk 16GB & connected it via USB to improve caching performance, now I'm considering upgrading by replacing the 1TB HDD drive with M.2 SSD PCIe NVMe card (128GB or 256GB). Please advise me if PCIe/NVMe is compatible/supported by the system or only M.2 NGFF can be install in it's place for OS bootup? Thx.
11-26-2017 02:30 AM
You can use any M.2 2242 SATA III SSD in the ThinkPad X250's WWAN M.2 slot.
11-25-2018 08:48 AM
Hello to everybody:
I am about to receive my X250 (yes I know a little bit late...) and I wanted to know the following: you mention that the M.2 2242 is for SATA III SSD connection. I recently fount a M.2 2242 PCI Express (a Toshiba OCZ RC100 240GB) that has high write/read speed. Do I understand correctly that this disk is not appropriate for the X250 and it will not work (or it will not work this fast)?
Thank you for any input.