# Installer fails to recognize EFI partition
**URL:** https://support.blue-systems.com/t/installer-fails-to-recognize-efi-partition/4193
**Category:** Netrunner Desktop 17.01
**Created:** [January 15, 2017, 12:24pm UTC](https://support.blue-systems.com/t/installer-fails-to-recognize-efi-partition/4193 "2017-01-15T12:24:02Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@gamez](https://support.blue-systems.com/u/gamez)
#### Post date: [January 15, 2017, 12:24pm UTC](https://support.blue-systems.com/t/installer-fails-to-recognize-efi-partition/4193/1 "2017-01-15T12:24:02Z")
Hi,
while trying to map partitions during the install, the installer doesn’t recognize /dev/sda1 as being my EFI partition (see attached screenshot). The file system (FAT32) is shown as unknown. I cannot select the mount point /boot/efi and am forced to reformat (which I don’t want to do). The esp marker is well set and recognized.
Can you advise?
Best regards
g.
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### Author:  [@mickleby](https://support.blue-systems.com/u/mickleby)
#### Post date: [January 15, 2017, 7:16pm UTC](https://support.blue-systems.com/t/installer-fails-to-recognize-efi-partition/4193/2 "2017-01-15T19:16:46Z")
Did you try the bottom option in the installer, to manually partition? On that screen select the system partition (i.e. NOT /dev/sda1, /dev/sda3 maybe?). You may need to fiddle with Grub manually after install, but it looks like your multiboot requires this anyway.
This is what I did, and the EFI and Swap partitions were left alone – functioned properly without needing installer intervention.
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### Author:  [@gamez](https://support.blue-systems.com/u/gamez)
#### Post date: [January 16, 2017, 1:53pm UTC](https://support.blue-systems.com/t/installer-fails-to-recognize-efi-partition/4193/3 "2017-01-16T13:53:42Z")
Thanks.
The error disappeared when I re-run the installer. All FAT/NTFS partitions were well recognized then.
Best,
g.
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### Author:  [@starbuck](https://support.blue-systems.com/u/starbuck)
#### Post date: [January 21, 2017, 8:03pm UTC](https://support.blue-systems.com/t/installer-fails-to-recognize-efi-partition/4193/4 "2017-01-21T20:03:17Z")
Today we also updated the ISO to include Calamares 3.0, which could fix those problems.