Memory for my iMac

Similar Questions

• What is the max memory for an iMac in early 2008

  What is the max memory for an iMac in early 2008? MacSales.com shows a 6 GB kit, but crucial only shows a 4 GB kit.

  Thank you

  John

  The computer iMac (early 2008) has two SDRAM slots in the bottom of the computer and comes with at least 1 GB DDR2 SDRAM installed into a slot. The maximum amount of RAM you can install in the computer is 4 GB (a 2 GB SO-DIMM in each slot).

  Source:

  iMac (early 2008): specification of memory - Apple Support

• Upgrade memory for iMac 24-inch, early 2009

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• What is the size of the Philips screwdriver I use to open the locations of memory on my iMac late 2009?

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  You are confused of RAM and disk space available.

  RAM stores information temporarily while the Mac is enabled and the application is reached. RAM replacement has no effect on the long term of your information storage.

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  FYI, for your iMac, the maximum RAM is only 6 GB.

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• Cannot find the RAM for my iMac

  I can't find my DIMMS (1333 mhz for an iMac mid-2011) on the Apple Store. I even searched the model # (PC3-10600) and they are apparently non-existent Apple is concerned. So I started searching Amazon, etc. I looked for that model # and a lot of sources that seem to match the specification EXCEPT that they were all the 240 pins. I can't find a 204 pins. What is going on? My Mac has really slowed down with all the OSX improvements and so on. I want to add 2 DIMMS to 4 GB, but I don't want to order something on the market after if it does of course. THX.

  Check that... I've did some more research and I found some 204 pins. Interestingly, several of them say 240 pins. What typo perhaps? Is it reliable aftermarket DIMM? Who are the good manufacturers?

• How can I perform a clean installation of Mac OS x for my iMAC, retina 5K late 2014 with drive of Fusion with the intact Recovery HD partition?

  How can I perform a clean installation of Mac OS x for my iMAC, retina 5K late 2014 with drive of Fusion with the intact Recovery HD partition?

  Pure how to install OSX on a Fusion drive and keep the recovery disc function

  These instructions assume that your iMAC partitions or file systems has been damaged and you want to restore to the way most efficiency with fusion drive and the recovery partition, similar to what was built in the factory.

  These instructions work for the iMAC, retina 5K end 2014 version comes with OSX Yosemite. The scores of major drive of the 128 G SSD and 3 TB of HARD drive has been configured as a logical drive (merger by car).

  WARNING: These instructions here are shared for interest only. Readers to take their own risk by following these instructions. The author is not responsible for any damage caused by following these instructions.

  This is the target disk partitions, and the configuration that we want to achieve.

  Disk0 is the 128 GB SSD - solid state drive and holds the start of the partition (disk0s3)

  Disk1 is the 3.0 to HDD - mechanical transmission and holds the Recovery HD partition.

  There are two EFI partitions to partition table GUID on both hard drives (disk0s1, disk1s1).

  Disk space remaining (partition disk0s2 and disk1s2) are used to create the disc of Fusion 3.1 to named "Macintosh HD".

  / dev/disk0 (internal, physical):

  #: NAME SIZE TYPE IDENTIFIER

  0: GUID_partition_scheme * GB 121,3 disk0

  1: disk0s1 EFI EFI 209.7 MB

  2: Apple_CoreStorage GB LVG 121.0 disk0s2

  3: disk0s3 Apple_Boot Boot OS X 134,2 MB

  / dev/disk1 (internal, physical):

  #: NAME SIZE TYPE IDENTIFIER

  0: GUID_partition_scheme * 3.0 to disk1

  1: EFI EFI 209.7 MB disk1s1

  2: disk1s2 Apple_CoreStorage TB 3.0 LVG

  3: disk1s3 Apple_Boot Recovery 650.0 MB HD

  / dev/disk2 (internal, virtual):

  #: NAME SIZE TYPE IDENTIFIER

  0: Apple_HFS Macintosh HD + 3.1 TB disk2

  Logical volume on disk0s2, disk1s2

  0D807F6E-FB7C-418F-AAF4-EF3EA3525D10

  Fusion unencrypted drive

  Here's how we do it.

  • A. clean reinstallation of Mac OS x.
  • 1. make sure that you back up all your data on the hard drive using Time Machine or other means. The following procedure will delete all data.
  • 2. create the OSX install USB, insert it to the MAC workstation.
  • 3. given that us will be operated on the internal trunk of the reader of the Mac, it must start on OSX install USB (see Y.).
  • 4. in the menu at the top of the screen, select disk utilities.
  • 5. turn highlighted the volume of disk Fusion called "Macintosh HD." Click clear to clean.
  • 6. If his success, then go ahead to install OSX new to that partition, as usual.
  • 7. otherwise, if it does not, that means fusion drive has been damaged.
  • 8 follow the instructions below to fix it.
  • . B. Split disc Fusion in the physical hard disks
  • 1. Since us will be operated on the internal drive of the Mac trunk, assumes that we already have boot up OSX install USB drive (see Y.).
  • 2. in the menu at the top of the screen, select utilities and Terminal.
  • 3. on the screen of the terminal type:
  • Cs diskutil list.
  • You will see something similar to the screen below.
  • 4 copy the long string after Logical Volume and replace the UUID with it in the following command to delete the logical volume of the disc fusion (aka coreStorage of logical volume):
  • diskutil deletevolume cs UUID
  • For example:
  • diskutil deletevolume E59B5A99-F8C1-461A-AE54-6EC11B095161 cs
  • 5 copy the long string after the logical volume group and replace the UUID with it in the following command to remove the drive (aka coreStorage) fusion:
  • diskutil cs remove UUID
  • p. ex. diskutil cs remove E03B3F30-6A1B-4DCD-9E14-5E927BC3F5DC
  • 6. at this stage, the fusion drive has been deleted, and hardsisk SSD and mechanical hard drive will be reappear in diskutil or separate records.
  • 7. If step 5 or 6 takes more than 30 minutes to complete, this means that the fusion drive has been corrupted. You can follow the commands below to clear the table to partition the hard way. First command clears the SSD drive, second command erases the HARD drive.
  • The command does not return a response, after 1 minute, press Ctrl + Z to complete orders. 1 minute is enough data to code and erase the partition table on the disk.
  • cat/etc/random >/dev/disk0
  • cat/etc/random >/dev/disk1
  • . C install a new copy of Mac OS x for the hard drive HDD and tested this disk partition hard recovery work.
  • 1. go on diskutil to create a partition called Macintosh HD HDD hard drive using all the space there.
  • 2 do the same with the mechanical hard drive.
  • 3. follow the usual procedure to boot from the installation of OSX USB and install a new copy of Mac OS x hard disk SSD.
  • 4. This will create the correct priming of the partitions, recovery hard drive partitions and PSX partitions hard disk HDD.
  • 5. once the installation is complete, test if OSX may start successfully, but no need to go through the initial MAC OS x didn't put in place that we're going to waste this and do the installation again later.
  • 6. we must now test if the recovery hard drive partition works.
  • 7. reboot for hard drive recovery (see X - by pressing command and R at the same time during boot right after that you hear sound start and release only a few seconds after you see the apple logo and the progress bar for loading...)
  • 8. it is important to test and make sure that the partition of hard drive recovery.
  • D. recreate the fusion drive
  • 1 since us will be operated on the internal trunk of the reader of the Mac, it must start on OSX install USB (see Y.).
  • 2. in the menu at the top of the screen, select utilities and Terminal.
  • 3
  . on the screen of the terminal type:
• diskutil list.
• You should find that we have a list of disk group hard physical volume only, no logic here still.
• 4. you will see something similar to the screen below.
• 5. search for the largest partition on the SSD hard drive, which should be close to the maximum size of HDD to the SSD (121 G, for example) and mark the name of the device, this will usually be something like/dev/disk0s2
• 6. search the largest disk partition mechanical forming fusion with the SSD hard drive. This should be close to the maximum size of the mechanical hard drive (for example 3 TB) hard disk and mark the name of the device, this will usually be something like/dev/disk1s2
• 7
. Now let's create the merger in car (group alias logical volume) in the Terminal, type: diskutil cs create nom_lecteur driveIDs
• The number of the driveIDs is unlimited, it may be a number of discs, or a number of disk partitions. Always put the faster discs first, for example for our SSD disk0s2
• For example:
• diskutil cs create fusiondrive disk0s2 disk1s2
• diskutil - the version of disk utility command line.
  cs - This calls for Core Storage, which is necessary for the merger.
  create - creates a basic storage group.
  nom_lecteur - is the name of the drive and how you want that he
• appear in the disk utility (not the Finder - that comes later). You can call it what you like; in our example, we named our Fusion table "Fusion".

driveIDs - Here is the Player IDs of the readers you want as part of your Fusion table, separated by a space. In our example, they are 'disk0' and 'disk1', but it may be different in your configuration.
• It is important that the faster hard drive appears first in the command, which in our case the disk0s2 (a partition in the SSD). In this way, drive fusion will use this disk as primary and the cache. The second disc in the command, in this case disk1s2 (a partition on the HARD disk). The secondary disk (HARD drive) is used to store less frequently used files.  Otherwise, the fusion drive performance will be worse that it is designed for.
• 8. you will see something like below appear on the screen:
• Creation Volume logical storage of kernel
• Move isk0s2 storage of carrots
• Disk1s2 of switching for the storage of carrots
• Waiting for logical volume group appear
• Discovered the new group of logical volumes 'DBFEB690-107B-4EA6-905B-2971D10F5B53 '.
• Store LVG UUID: DBFEB690-107B-4EA6-905B-2971D10F5B53
• Finished CoreStorage operation
• 9 copy to the bottom of the string after "Discovering new Volume Logic Group" using the command + C
• 10. next, create the partition of the merger (alias logical volume) drive named "Macintosh HD".
• In the Terminal, type: diskutil createVolume groupString jhfs cs + size volumeName
• For example:
• Diskutil createVolume DBFEB690-107B-4EA6-905B-2971D10F5B53 jhfs cs + 'Macintosh HD' 100%
• diskutil - once again, this is the version of disk utility command line.
• cs - called the basic storage functions, which are necessary for this arrangement.
• createVolume - this is the command to create the storage area real for the reader who is represented by an icon on your desktop.
• groupstring - this is the long alphanumeric string you copied in the previous step. It identifies the table you created such as getting a volume placed on it.
• jhfs + -the format of the disc. It is Apple (journaled) extended Format, which is recommended for drives with an operating system installed on it.
• VolumeName - the actual name of the volume, how it should appear under the icon. If there is a space in the name, you must put the full name in quotes ("name") or put a slash before the (name Drive\) space. In our example, we made these, naming our volume "Macintosh HD".
• size : this is the size of the volume. In our example, we had a 1.1 TB drive. We used '1100g' to describe what 1100 GB (1.1 TB to base 10). Otherwise, we could have also used 1.1 T or even 100% as a size.
• 11. go to diskutil to verify that you can see this new partition on the list.
• 12. test by erasing all the data from it.
• 13. then you can go ahead to start on the USB drive to install OSX and install a new copy of Mac OS x on it.
• 14. This will allow you to keep the recovery disk feature.
• X. how Prime to recover partition
• Press and hold the command and button R set immediately after hearing the bells to boot.
• Only release it 2 seconds after you see the Apple logo on the screen and the progress bar for the start. This will start the partition of hard drive recovery.
• Y. how-to boot OSX install USB
• Press and hold the command and the optionkey together immediately after hearing the ringing of boot.
• Only release it 2 seconds after you see the Apple logo on the screen and it will give you a list of startup disk choice, choose the OSX install USB to boot from.

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  So after upgrading the memory in my NB550D to a module of 4 GB (3 GB usable) steals the netbook, but I noticed the HD 6250 graphics uses 1 GB of memory for himself, obviously such a graphic of a budget entry has not even need half of this sum, especially that the screen is only 1024 x 600 , so if an admin is to check this, I wondered if in a future BIOS, an option could be added to adjust the amount of GPU memory?

  I'd rather have the GPU using approximately 256MB and rest in the direction of memory system, it does not require as much memory.

  Hey,.

  Who knows if Toshiba released a BIOS where you can adjust the graphics memory but such a function isn't known to me and I doubt it will happen.
  The memory of the graphics card will always be controlled automatically and there is no value that you can change.

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  Sorry for the newbie question. But if I have 512 MB of memory for the time being, what are my upgrade options?

  Do I have to buy pairs of memory? So I can or buy 2 x 1 GB = 2 GB, or 2 x 512 MB = 1 GB + 512 existing. Or can I say just buy a single 512 MB or 1 GB chip?

  Since no one wants to answer:
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  2. knowledge of what type of RAM you have. This will add or remove a possibility of upgrade

  The thing with Dual Channel is, that you have the best performance if you use 2 RAM of the same type (really of the same type: company, size...)
  you could:
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• Upgrade memory for Satellite 2800 400

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  Hi Ben

  Maybe you used the memory modules bad.
  As far as I know that you can upgrade memory for max 192 MB
  The 64 MB has been installed in an internal memory and cannot be deleted.

  I found these compatible modules:
  PA3003U - 1 M 03 32 MB
  PS3004U - 1 M 06 64 MB
  PS3005U - 1 M 12 128 MB