July 14Jul 14 Good morning, I'd like to disconnect the NVMe drive that serves as a cache for the ZFS pool: pool: zfs state: ONLINE scan: scrub repaired 0B in 14:11:27 with 0 errors on Wed Jul 1 13:11:28 2026 config: NAME STATE READ WRITE CKSUM zfs ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 /dev/sdf1 ONLINE 0 0 0 /dev/sdg1 ONLINE 0 0 0 /dev/sdh1 ONLINE 0 0 0 /dev/sdi1 ONLINE 0 0 0 /dev/sdj1 ONLINE 0 0 0 /dev/sdk1 ONLINE 0 0 0 /dev/sda1 ONLINE 0 0 0 /dev/sdb1 ONLINE 0 0 0 /dev/sdc1 ONLINE 0 0 0 /dev/sdd1 ONLINE 0 0 0 cache /dev/nvme0n1p1 ONLINE 0 0 0 errors: No known data errorsCan you tell me how to do this? After stopping the pool and trying to detach the disk, I get a "missing" message:Ultimately, I wanted to use the drive as a bootable drive for Unraid. Edited July 14Jul 14 by Kulis
July 14Jul 14 Community Expert GUI doesn't support that, but if you are comfortable using the CLI see https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/4/#findComment-1512308
July 14Jul 14 Author @JorgeB Should I do this on the drives that are currently running, or should I stop them? Edited July 14Jul 14 by Kulis
July 14Jul 14 Community Expert Solution The removal should be done with the array running, since the pool must be imported.
July 14Jul 14 Author Your instructions work!Now the final step is to reimport the pool without that subpool, to do that: stop the arrayon main, click on the first device for that pool and then "remove pool"back on main, create a new pool with the same name and the new number of slotsassign the remaining pool device(s), it can be in any order, they will be sorted at array startleave the filesystem set to autostart the array to import the pool
July 14Jul 14 Community Expert 1 hour ago, Kulis said:Your instructions work!Now the final step is to reimport the pool without that subpool, to do that: stop the arrayon main, click on the first device for that pool and then "remove pool"back on main, create a new pool with the same name and the new number of slotsassign the remaining pool device(s), it can be in any order, they will be sorted at array startleave the filesystem set to autostart the array to import the poolYes that is how you re-import a zfs pool
July 15Jul 15 Author Could you please tell me how I should format this drive now so that it can be used as a boot drive for the Unraid OS?
July 15Jul 15 Community Expert You don't need to, run the wizard; select that device for the boot pool and it will take care of that
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