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This is not a bug I suspect. The EFI spec states the format should be FAT12, FAT16, or FAT32 as I read https://uefi.org/sites/default/files/resources/UEFI_Spec_2_8_final.pdf#G17.1019485 The bug is more whomever installed your system in a non-EFI specification compatible mode, not with Ubuntu which is following the EFI specifications. The following is quoted from EFI specification link provided :- 13.3 File System Format The file system supported by the Extensible Firmware Interface is based on the FAT file system. EFI defines a specific version of FAT that is explicitly documented and testable. Conformance to the EFI specification and its associate reference documents is the only definition of FAT that needs to be implemented to support EFI. To differentiate the EFI file system from pure FAT, a new partition file system type has been defined. EFI encompasses the use of FAT32 for a system partition, and FAT12 or FAT16 for removable media. The FAT32 system partition is identified by an OSType value other than that used to identify previous versions of FAT. This unique partition type distinguishes an EFI defined file system from a normal FAT file system. The file system supported by EFI includes support for long file names. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1840857 Title: Couldn't run grub-install on created EFI partition. Doesn't like boot on an NTFS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1840857/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
