Hi, I made a mistake today. I upgraded my NetBSD/sandpoint NAS (Synology DS-209j) from two 2TB to two 4TB disks - and completely forgot about the MBR/disklabel limit of 2TB!
The sandpoint boot-loader (altboot(8)) only knows about disklabel, MBR and RAID. No GPT-boot. Which options do I have to use the remaining space (preferably with RAID)? My first Idea was to install the NetBSD-root into a few GBs at the beginning of the disk and then try to mount the rest of it via wedges. But while testing with # dkctl wd0 addwedge testwedge 150000000 1000000 ffs I received a "Device busy" error. Why? I have an MBR with a disklabel for the first 64GB of the disk only. The remaining part of it cannot be busy. Can I greate a GPT with hybrid MBR? gpt(8) shows -H Ignore existing MBR (Hybrid MBR/GPT mode). but has no information how to create such a hybrid table. The info for "gpt create" indicates that the MBR is lost. Thanks in advance! -- Frank Wille
