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adrian.k

macrumors newbie
Original poster
Sep 8, 2018
5
0
#1
Hey!
I bought a new iMac 21" in January this year, but im having a few issues with it. I think its too slow, and usually choose to use my MacBook from 2014, because of the time it takes to start small programs such as Images.

When I bought my iMac, I ordered it with 1TB Hard drive. Now I see that I should have chosen the 250 SSD drive, because of how slow my iMac is (it takes for example 3 minutes from I start it until images is open).

I have been advised to buy an external hard drive (SSD), and I have bought one now that has the storage of 250gig. I want to install IOS 12 on this one, because I have heard that it will go faster because its an SSD.

However, when I try to reinstall IOS12, I am able to choose what hard drive I want to install it on. When I choose my new ssd disk (Samsung portable SSD T5), I get this message: Use Disk utility to use disk utility to change the repartition. Select the device with the disk, click on the delete button, select a volume layout, and then click the delete.

How do I reinstall it to my new ssd hard drive?

Sorry for bad english, please feel free to ask for more information if something is missing or bad explained.
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#1
Hey!
I bought a new iMac 21" in January this year, but im having a few issues with it. I think its too slow, and usually choose to use my MacBook from 2014, because of the time it takes to start small programs such as Images.

When I bought my iMac, I ordered it with 1TB Hard drive. Now I see that I should have chosen the 250 SSD drive, because of how slow my iMac is (it takes for example 3 minutes from I start it until images is open).

I have been advised to buy an external hard drive (SSD), and I have bought one now that has the storage of 250gig. I want to install IOS 12 on this one, because I have heard that it will go faster because its an SSD.

However, when I try to reinstall IOS12, I am able to choose what hard drive I want to install it on. When I choose my new ssd disk (Samsung portable SSD T5), I get this message: Use Disk utility to use disk utility to change the repartition. Select the device with the disk, click on the delete button, select a volume layout, and then click the delete.

How do I reinstall it to my new ssd hard drive?

Sorry for bad english, please feel free to ask for more information if something is missing or bad explained.

I have tried to partition it, but it wont let me do it. The icon is visible, but I cant go in there via my external hard drive.
 
When I bought my iMac, I ordered it with 1TB Hard drive. Now I see that I should have chosen the 250 SSD drive, because of how slow my iMac is (it takes for example 3 minutes from I start it until images is open).

That is not normal for a new 21.5" iMac with a 5200 RPM 1TB hard drive. Granted that machine is not going to be as fast as one with an SSD or even a Fusion drive, but 3 minutes until images open is unacceptable. There is something else going on with your iMac. Perhaps you have too many programs running when you start up? You need to do some trouble shooting first before deciding on using an external SSD to boot from.
 
That is not normal for a new 21.5" iMac with a 5200 RPM 1TB hard drive. Granted that machine is not going to be as fast as one with an SSD or even a Fusion drive, but 3 minutes until images open is unacceptable. There is something else going on with your iMac. Perhaps you have too many programs running when you start up? You need to do some trouble shooting first before deciding on using an external SSD to boot from.

I thought so to, but when I visited my local apple store, they said that they couldn't find anything wrong with it. I have not anything special stored, and only use 120gig of the 1TB that I have as storage. I have made sure to not have any programs starting up when I turn it on.
 
OK, I'll try to help.
It will take a few steps and a few posts.

What to do first:
1. Connect the external SSD
2. Open Disk Utility (in the utilities folder)
3. Select the external SSD
4. Click the "erase" button
5. Choose "Mac OS extended with journaling enabled"
6. Give the external SSD a name (should be simple name that's different from the internal HD)
7. Let Disk Utility erase the drive.

When it's done, you should see the icon for the SSD on the desktop. There won't be any files on it, because we just erased it. That's what you want, as a first step.

Can you get this done?
Do it, and we'll move on to the next step.

Do you have the Sierra (10.12) installer in your Applications folder?
Look inside, and tell us.

Also, do you have a spare USB flashdrive (8gb or larger) around?
 
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