Partition my ssd

Hello,
I have a macbook pro retina 13 "mid 2014 under yousemite.
I would like to partition my SSD and FileVault is not enabled.
I completely format the drive and I have to partition before installing OSX, but now I'd like to change my diagram partion without deleting my data.
I open Disk Utility, and I click Macintosh HD => partition => I see the disk partion shcéma on the right side of the window, but the little "+" and the tab "patition scheme "are grayed out, I can not add other partitions.
Could you help me please, Thanks in advance.

To resize the drive do the following:
1. Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
After the main menu appears select Disk Utility and click on the Continue button. Select the hard drive's main entry then click on the Partition tab in the DU main window.
2. You should see the graphical sizing window showing the existing partitions. A portion may appear as a blue rectangle representing the used space on a partition.
3. In the lower right corner of the sizing rectangle for each partition is a resizing gadget. Select it with the mouse and move the bottom of the rectangle upwards until you have reduced the existing partition enough to create the desired new volume's size. The space below the resized partition will appear gray. Click on the Apply button and wait until the process has completed. (Note: You can only make a partition smaller in order to create new free space.)
4. Click on the [+] button below the sizing window to add a new partition in the gray space you freed up. Give the new volume a name, if you wish, then click on the Apply button. Wait until the process has completed.
You should now have a new volume on the drive.
It would be wise to have a backup of your current system as resizing is not necessarily free of risk for data loss. Your drive must have sufficient contiguous free space for this process to work.

Similar Messages

Really still need EBS (Erase Block Size) for partitioning a SSD?

The Arch wiki mentions that when partitioning an SSD you need to align the partitions to the erase block size (see https://wiki.archlinux.org/index.php/Pa … ate_drives ). There are a lot of how-to-partition-an-ssd-under-linux which also mention this value, even an online calculater.
Those value are known for a lot of the serious models, among them also the Samsung 840 Pro and EVO. As I already asked in an older thread, I would like to know the value for the current model Samsung 850 Pro. Unfortunately Samsung Germany's support refuses to provide me with those values.
Therefore I ask myself, is it still necessary to align partititions to a multiple of the EBS, or is this unnecessary if the device supports TRIM?
Thanks!

Did you read the section immediately after the one you linked? https://wiki.archlinux.org/index.php/Pa … ng_tools_2
In past, proper alignment required manual calculation and intervention when partitioning. Many of the common partition tools now handle partition alignment automatically:
To verify a partition is aligned, query it using /usr/bin/blockdev as shown below, if a '0' is returned, the partition is aligned
Is that not sufficient for your purposes?
Last edited by 2ManyDogs (2014-11-04 18:55:37)

Can I partition 256gb ssd and 1tb hard drive to be split 50 / 50 for Mac OS and windows?

I am going to buy a new iMac. The question is which storage option? If I get the 256GB ssd and the 1TB option, it appears the mac OS is pre installed on the ssd which is great. I would then like to install windows 7 on the ssd using bootcamp, and partitioning the ssd to be half for mac and half windows. I think this is the best thing to do... Correct? My main concern is then can I also split the 1 TB hard drive as well? Ideally I would like to split both drives 50 / 50, install the operating systems and software on the ssd and use the hard drive as general storage. I have read mixed reports on the possibilities of this and would really appreciate your help and advice. I am not that technical and would like to avoid using third party software, and stick to bootcamp if possible.
Thanks all!

I suggest you open Boot Camp Assistant and click on the button to print the documentation. Read it carefully before using BCA. BCA only creates the partition. It does not format it. That is done with the Windows installer at the beginning of the Windows installation.
Although Windows can r/w NTFS volumes OS X can only read them. That means you can copy files from the Windows boot volume but not write files to it. If you need to move files to and from the Windows system you would use the data volume you will set up on the HDD. If you don't need to use files larger than 4 GBs in Windows then FAT32 is fine. Using ExFAT would only be advisable if you anticipate the need to handle files larger than the 4 GB limit of FAT32.

Mystery partitions on SSD after recovering space

I've recovered the space from the lenovo recovery partition (after writing DVD's) on the SSD on my new Edge s430, however according to partition wizard there are still some "mystery" paritions. These are:
*: SYSTEM_DRV (1.5 GB) - Before my main C:
*: (8GB) - After my C drive
I understand that the first is the windows recovery partition, which I'm happy to keep.. but the latter seems to have no drive name or clear use and I'm pretty keen to recover 8GB (of a 128GB SSD - I have 1TB HDD as well, but space on the system drive is always welcome!) Any ideas?

i checked my colleague's S430 for you, and he does not have any mystery partition on his factory shipped 128 gigs SSD.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

How to clone recovery partition to SSD so F11 works with new SSD?

I received my new Envy 15 Laptop today. It has a 1Tb 5400rpm hard drive but I want to replace with SSD. I tried cloning it to a 300Gb SSD drive. I used "EaseUS Todo Backup Free".
The laptop boots up to Windows 8.1 successfully on the new cloned SSD , but when I press F11 key during bootup to load the recovery partition it errors out. If I swap back to the 1TB 5400rpm original drive, the F11 key bootup recovery works.
How do I clone the recovery partion from the 1TB HDD to the 300gb SSD ?

Hello , Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More. I understand that you are having an issue migrating your Hard Disk to a SSD, and wanted to assist you! You may be having this issue, because you tried to migrate a larger 1TB HDD to a smaller 300GB SSD drive. Please review the following resources to assist you with this situation:Cloning Hard-drive to SSD Cloning a larger HDD to a smaller SSDHow to migrate HDD to SSD without reinstalling windows (Includes UEFI FIX) These resources are not HP supported Web sites. Please let me know if this information was helpful by clicking the thumbs up below.
Regards!

How to clone recovery partition to SSD

I received my new Envy 15 Laptop today. It has a 1Tb 5400rpm hard drive but I want to replace with SSD. I tried cloning it to a 300Gb SSD drive. I used "EaseUS Todo Backup Free".
The laptop boots up to Windows 8.1 successfully on the new cloned SSD , but when I press F11 key during bootup to load the recovery partition it errors out. If I swap back to the 1TB 5400rpm original drive, the F11 key bootup recovery works.
How do I clone the recovery partion from the 1TB HDD to the 300gb SSD ?

Hello , Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More. I understand that you are having an issue migrating your Hard Disk to a SSD, and wanted to assist you! You may be having this issue, because you tried to migrate a larger 1TB HDD to a smaller 300GB SSD drive. Please review the following resources to assist you with this situation:Cloning Hard-drive to SSD Cloning a larger HDD to a smaller SSDHow to migrate HDD to SSD without reinstalling windows (Includes UEFI FIX) These resources are not HP supported Web sites. Please let me know if this information was helpful by clicking the thumbs up below.
Regards!

Migrating existing partitions to SSD + HDD

I have a Lenovo T530 i5 that I purchased last fall with 4GB ram and a 500GB 7200rpm hard drive, with the intention of upgrading it to 16GB and an 256gb SSD when time/funds allowed. That time is now.
The machine is currently multi-boot Windows 7 Pro, Ubuntu 12.10, openSuSE 12.2 and Linux Mint 14. After a lot of initial fussing around, the latter two get used very little if at all, so I will probably be going to just a dual-boot config. The hard drive is split up with approx. 100GB for Win7, 20GB for each of the Linux distros, 15GB for the Windows recovery partition, 5GB for swap, and the remainder accessible under /srv/data in the various distros.
When I initially got this machine, the very first thing I did was use clonezilla to image the HDD and store it to a NAS. As I finished doing the various updates, partitioning, more updates, installing other distros, etc. I continued to do periodic images with clonezilla, so I have a pretty good set of backup images that I can go back to for restoration if need be. The user /home directory is backed up using duplicity (Deja Backup) under Ubuntu, also to the NAS.
What I want to end up with is the SSD as the primary drive, with the Windows system and recover partitions, and Linux partitions as necessary in the remainder, using LVM. The current HDD will be re-purposed and mounted in a caddy in the optical bay under /srv, probably formatted NTFS so its accessible under both Win7 and Linux.
I was thinking of taking another run with clonezilla and imaging the Win7 install, the Ubuntu install, and the /srv/data partition to the NAS one final time. After that... install the new SSD, restore the necessary partitions to it via clonezilla to get Win7 running again, and then re-install Ubuntu from scratch in the remaining space, and restore /home/$user from the NAS using duplicity. The major fly in the ointment here is getting the linux install back to its previous state, as far as installed programs, PPAs, etc.
What I'm after here is any suggestions as to any glaring faults with the above schema, and ideas on how to get from where I am to where I want to be when all the bits get here.
Thanks,
Monte

If you want your new Linux install to have the same settings as your current install, it can be done, but I am not an expert at it.
If you are using Ubuntu you may have Synaptic. I believe that Synaptic lets you export a list (or even a batch file to download) of all of your existing packages.
I may be naive here, but couldn't you just copy your /home directory, with all of the hidden files, and when copied back to your new install, your configuration should be the same... right? I mean, as far as default fonts, preferences, etc., not software installs. Since in Linux "everything is a file" I think if you have a plain copy of your entire partition then if you find something is not how you like it, you just find out which config file it is (e.g. an ~.emacs file can become quite customized and difficult to reproduce from scratch).
Again I'm not an expert here but maybe it helps.
-JV474

Should I partition my SSD?

Hello!
I just received my new macbook pro (yay!) It's a 17" with the i7 processor, 8Gb of RAM and a 256 SSD. I'm a photographer, so (except for the fact I live my whole life on my machine!) I use it primarily for photo editing and web publishing (with CS4.)
I was wondering whether I should partition my hard drive? Should have a system partition and maybe a documents/cache partition - or even one just for the application caches and my latest photos/jobs?
I know it was recommended for regular hard drives to help with fragmentation, but I never did it before,
1. because my hard drive was only a 100Gb and my photos were stored on a USB external and my scratch disk for Photoshop was an empty 250Gb firewire, and
2. because it seemed silly to me since the User folder remained in the system partition and all downloads and emails and libraries were still stored with the system.
Now that I have a bigger HD I could work my latest jobs directly from the internal, and using the internal as a scratch would be more practical than launching an old Lacie that makes more noise than a jet taking off.
Would it make sense to make 2 different partitions in that case? Especially on an SSD? I've been debating what to do since I installed tonight... and I noticed that I could add and change partitions' sizes on the fly now (is that specific to SSDs? Crazy!) so I'm asking before I migrate my docs tomorrow. What do you think?
Thank you for your advice!
Marie

Well, I've read that, but also that SSD's do suffer a tiny bit from fragmentation anyway, and caches can really affect fragmentation a lot, especially Photoshop's, so since indeed I won't be able to defragment, I wondered whether applying some prevention by making this cache/scratch partition would help significantly enough that it would be worth it.
I can't make up my mind

This disk cannot be used to startup this computer message when I try to install mavericks. Cant partition my SSD (which is verified) either - help!

Hi all
I am using Snow Leopard and have just downloaded Mavericks. I have a 250 gig SSD with no partitions. When trying to install I get a message saying 'this disk cannot be used to startup this computer" and disk utility has checked my drive and its fine, but I cant partition it either saying 'the partition cannot be resized Try reducing the amount of change in the size of the partition". I have tried various sizes but nothing works. Please help!

Well, I'm puzzled by the fact that you have your 750 GB disk highlighted, yet on the right it is showing disk0s2 as having 750 GB with nothing on it although your Macintosh HD appears to be part of that disk0s2. I have no idea what disk0s1, 5, and 6 are or what they contain, but the only thing accessible seems to be your Macintosh HD - does that contain your OS? For comparison, here is a screenshot of mine (2 partitions on my internal hard drive):
The area shaded in blue is the space my OS/apps/etc. occupies.
Unless there is a viable explanation of your disk(s), my suggestion would be to boot into recovery, erase your drive, partition properly, and then reinstall from scratch. Make sure you have a backup first.

Using 2 Partitions on SSD Drive - Snow Leopard & Leopard

We have split our APPLE SSD TS128A into two partitions. We then installed Snow Leopard on one partition and booted from it successfully. Then we inserted our Leopard disc to install Leopard on the other partition. To our surprise the Leopard disc (upon restart) would only produce a grey screen followed by a black screen/power down. If we booted up holding down option we could see the Leopard disc and select it for mounting but we still had the same result.
Next we gave up on a clean Leopard install and cloned a previous Leopard OS from an external hard drive to the second partition of our SSD drive. Using SuperDuper everything copied over successfully but the volume would not boot successfully. Again we got a grey screen followed by a quick black screen / power down.
We are wondering if this a problem with this SSD drive as we have cloned many times in the past from computer to computer and never had a problem like this.
We have also preciously run Leopard on this SSD drive while the drive had only one partition.
Also, yes our Leopard install disc is fine. We have used it on other machines. Also, yes we have enough room on each partition for each OS installation.
We partitioned using GUID and each partition/volume is Mac Extended Journaled

Apple doesn't program any Macs not to allow an earlier version of the OS to be used. However, a Mac cannot not successfully boot from an OS that does not include appropriate drivers for its hardware components, & quite often more recent Macs have upgraded hardware that are not supported by the drivers shipped with older versions of the OS.
For this reason, the OS +installer package+ checks the hardware of the Mac targeted for the OS install & compares it to a list of what it can support. If the Mac isn't on that list, it will refuse to install the OS. For the same reason, if you bypass the installer, like by using a clone of the HD of a different Mac with an older OS version on it, it generally will not successfully boot a Mac with newer hardware.
Note that the hardware differences can & usually do include things other than just the CPU or graphics processor. Check /System/Library/Extensions, which is the home of the drivers (as well as other extensions) & note that things like the System Management Controller (SMC) & various input/output (IO) devices each have drivers that correspond to subsystems typically implemented with different hardware on different Macs.
And to answer a question this might raise: no, generally speaking you can't mix & match drivers from different versions of the OS & expect stable results. This is largely due to the interrelationship between drivers: some have dependencies on others (especially among the IO ones) so a mismatch can cause problems, up to & including kernel panics.

MBA 2010 Can't Erase/Partition internal SSD

I was unable to boot my 13" 2010 MBA. Hanging grey screen with gear turning -- forever.
Tried recovery partition tools starting with First Aid but to no avail.
I decided to erase and reinstall os x lion. I am unable to do this so far.
1. I tried erasing the volume Macintosh HD. Volume Erase failed with the error: File system formatter failed.
2. I tried to erase the 121.33 GB Apple SSD. Disk Erase failed with the error: Couldn't unmount disk.
The disk is mounted since the recovery partition is what I'm using. So...
I rebooted with a good OS X Lion installation from an external USB drive (no problems), retried and got this result: Disk Erase failed with the error: Unable to write to the last block of the device.
3. If I try to partition the 121.33 GB Apple SSD I get: Parrtition failed with the error: Unable to write to the last block of the device.
I thought I would use superduper or ccc to clone back the (repaired) image of the SSD but when I launch either program they do not see the 121.33 GB Apple SSD so this route leads to a dead end also.
4. I tried using the Disk Utility Restore function using a variety of Sources and get the following error: An error (22) occurred while copying. (Invalid argument)
I am out of ideas. I can't take the SSD out of the macbook air and put it into an external enclosure and try formatting. I can't use the internet installation method since it is a 2010, and not 2011 Macbook Air.
I did a lot of googling and tried a lot of the suggestions but so far I'm stopped dead in my tracks. I am able to boot the macbook air using an external drive and recovery partition is usable, either on external drive or internal SSD.
If I could boot gparted or linux from a USB or CD/DVD I could use gparted (if it works) to reformat the internal SSD. But I can't figure out a way to do this, and the 13" 2010 MBA seems to have exceptions to the complex set or instructions that some people have found works with the non-2010 MBAs.
Any ideas would be greatly appreciated. I'm out of warranty and out of ideas.

From what I've read, the first step in downgrading is to use the disk utility and reformat from the recovery partition. Or let Snow Leopard do the same as part of the installation. This won't work. Unless Snow Leopard uses a different Disk Utility and that is where the error lies, in the Lion Disk Utility, I don't have much hope for this approach.
However, I would try it anyway's but I don't have any way of installing Snow Leopard. I don't think a DVD came with the 2010 MBA (if it did, I don't have it, nor a DVD drive although I've had limited success using a shared PC DVD drive ; i don't know if an install DVD would work using a shared PC DVDD drive).
If only I could boot to a gparted live partition from a USB stick or some such method (linux) I could try gparted but I don't know how to boot to gparted live on the MBA 2010. Again i have no problems booting from an exernal drive. I tried using fdisk, diskutil, etc. on the internal SSD but can't format it or delete partitions, one being the hidden recovery partition.
Very frustrating. I tried using ipartition but also to no avail. It kept giving me errors whenever Itried to reformat, repartition, unmount, etc..
I'm considering using the Genious Bar at Apple. Is this type of problem over their heads or might they be helpful? Perhaps it is a hardware problem with the SSD but I have no way of diagnosing that, AFAIK.

Before installing SSD in macbook pro, should I first partition it through USB?

Hi there,
I've got the Crucial MX100 as an upgrade from my Hitachi HDD. I don't need to copy anything from the old drive, and I will install Yosemite via usb flash.
I did a bit of research and some people (not mac users necessarily) have had problems in partitioning the SSD after attaching it to the sata port. My question is: would it be recommended to first create a GUID partition through USB on the ssd before installing it in? I think I know the answer to that, and my instincts tell me to trust the Mac, but I want to be sure.
Thank you!
Early 2011 MBP, 512GB Crucial MX100

Even if you have the same name as Grant Pannell the "pioneer" in the starting period of the SSDs, you can not post your statement as the truth.
And it certainly has nothing to do with data integrity. Can you tell me if Apple has something special in their SSD controller or the standard controller ?
If you refer to old SSDs with controllers of 3 or 4 years old, and a pre_Yosemite OS, Trim may have been interesting to install, I did it on all SSds then, and I am using SSDs already for 5 years. but in the last 2 years the SSD controllers are so advanced that - when overprovisioning is enough, trim does not add anything anymore. In Yosemite it is certainly unrealistic to do because you have to disrobe an important layer of security.

Partitioning a 256 GB SSD into two bootable partitions

I will soon get a 27in iMac Core i7 with a 1 TB internal and a 256 GB SSD.
I have three questions :
1- Can I partition the SSD so as to get two bootable partitions (one with Snow Leopard and the other with a clone of this same Snow Leopard partition that I will eventually upgrade to Lion when it gets available) ?
One of my goals is to keep an Operating System with Rosetta available.
2- Will it still be possible to install Bootcamp (Windows 7) on an NTFS partition on the 1 TB Internal drive, amongst other partition(s) ?
3- Any chance of predicting how Windows 7 will react to the presence of an internal SSD ?
(Will it merely see the SSD partitions? Will it be able to read and write to them ?)
Thanks in advance for your concern.
PP

1. Yes.
2. Yes as long as there is only the one OS X partition before setting up Boot Camp. You cannot create other partitions or you will lose the ability to manage the Boot Camp partition (remove it and/or re-add it.)
3. Windows will not read or write the OS X volumes.

SSD always disappearing and unable to partition/format

Hello,
i recently bought a Samsung 840 EVO 500GB for my 27" iMac 2011. It worked great at first, installed OS X, then used Bootcamp for installing Windows 7. But when i used the Windows installation to format the BOOTCAMP partition, the SSD suddenly disappeared. Booting OS X didn`t work either after that.
I`m quite desperate right now, i`m unable to partition/format/analyse or repair the SSD. When i boot up my iMac the SSD is listed in disk utility. But as soon as i try anything, the tool freezes for about 30sec and answers with an error. Then the drive disappeares and won`t show up again until i reboot my iMac. I have tried using different computers (Mac, Windows, Linux) and several tools, but i get the same behaviour over and over again.
Right now i`m suspecting a defective drive, but i`m still hoping for a quick fix. Anyone experienced something like that?

Yes of course
Read and Write speed are about 500-520 MB/s. Both on OS X and Windows. Btw. my iMac has the 250GB version and my PC got the 500GB version installed (for games). TRIM is enabled.
It`s quite a fast drive. At work, i`m using a MacBook Pro Retina, and the speed of that flash drive tops at about 350 MB/s.

Anyone using an SSD? did you align partitions to erase blocks?

I'm waiting on the 2nd gen Intel SSDs to copy my / and /home to the faster I/O device. In the meantime, I'm reading up on these things and have found numerous sources that suggest aligning partitions on SSD's to the erase block of the device. I found two major sources detailing the process. This one shows a setup using parted and explains the process.
I'm just posting to solicit feedback from the community on this issue. Does Aloisio have it right in that blog post?

Thanks for the link... most of that went over my head though. I'm not too sure about the whole boot 'tricky offset' as you described it though
My partition scheme for the 80 gig ssd will be pretty simplistic:
20 gigs of NTFS as partition #1
15 gigs of ext4 as partition #2
200 meg of ext3 for /boot as partition #3
rest of the drive for /home as partition #4
I'll keep /var and /data partitions on my HDD.
Glad to hear more comments about this so I can do it right the first time
Last edited by graysky (2009-08-14 21:35:29)

Partition my ssd

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