On 10/11/2020 17:18, Leon Fauster via CentOS wrote: > Hi folks, > > years ago I had no problem installing CentOS7 on my > iMac workstation (iMac Late 2015). The installation > worked out of the box. Today I wanted to upgrade to > CentOS8 and while configuring the partitions I get an > error that the installation can not start because: > "HFS+ ESP needed and mounted on /boot/efi". In fact > they are the same partition as for CentOS7. Is this > a regression of anaconda, implying that the EFI partition > must be HFS based? I can boot CentOS7 with the vfat EFI > partition ... > > -- > Leon > Hi Leon, Same problem for me on my wife's iMac (24" , 2018 model) : running CentOS 7 perfectly fine but I replaced original sata HDD with a SSD some months ago and wanted to reinstall with CentOS 8 and same result, so I finally reinstalled it with 7 again, and put that on my "TODO" list. As you can see, some upstream changes landed in anaconda when detecting Mac/Apple hardware and it works fine with Fedora (tested already) because both hfs/hfs+ support exist in kernel and hfsplus-tools package too. Of course it was removed from RHEL kernel (and packages list) so I have some ideas in mind but never had time to investigate further (as iMac also runs fine with CentOS 7) One idea was to "modify" on the fly anaconda (with updates.img) to *not* use HFS+ part but instead vfat. There are ways to do that but one first need to find which python code to mod in anaconda (and then see if such method still works : https://arrfab.net/posts/2011/Jun/11/modifying-anaconda-behaviour-without-rebuilding-the-whole-install-media/) Other idea : respin an iso/tree that would use different kernel and access to hfsplus-tools pkg and so no need to "hack" anaconda So many ideas, but not enough time to investigate this for now ... -- Fabian Arrotin The CentOS Project | https://www.centos.org gpg key: 17F3B7A1 | twitter: @arrfab -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20201111/26b5d1db/attachment-0004.sig>