How much PC storage is needed to restore a 46 GB iPhone backup?

I have an Iphone 12 mini. I backed up the phone using itunes on my PC. Now when I try tor estore the phone, I am running out of disk space on my PC. My pc is old and I cannot upgrade to a bigger drive. How much free space is required to restore?

The backedup data size is around 46 GB.



[Re-Titled by Moderator]

Posted on Apr 28, 2025 08:29 PM

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3 replies

Apr 29, 2025 12:57 AM in response to lobsterghost1

I will try to be more accurate.

I have been facing heating issues with my 12 mini from a long, long time. not that it has grown old with time.

Yesterday, after I woke up. I had an idea to Backup, reset and restore. 2 step process.

So I installed and Older version of itunes I had the executable for in my windows 7 Laptop.

Note: Never used an Itunes before.

Manually deleted some files and apps from my iphone which can be installed later and just kept the ones I need once i have setup the phone again which computed to whatever was left in the phone.


Now I connect the phone, and create a Back up on the local drive.


hence I have nothing else in my PC using itunes other than this back up


Now i reset the phone

I open itunes. For no joy I check the free space on Primary Windows drive which "c:" in this case and the free space is roughly about 20 GB

Then I try to restore the phone from the backup.

>>>> it fails


i click on the message for the failed attempt with error and close I tunes.

Soon my windows PC on the system tray notification, tells me my "c" drive is out of space.


I open the "my computer" and I see 100 mb free space left

I restart the PC

but I still see just about 80 mb now


So i decide to clean up. I go to.... Start> Run>

  1. %temp% Shift+delete everything possible
  2. temp Shift+delete everything possible
  3. prefetch Shift+delete everything possible
  4. Clear recycle bin


My lost space is not yet back. I got scammed

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How much PC storage is needed to restore a 46 GB iPhone backup?

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