Machine: RaspberryPi 4; OS: Raspbian

SETUP: SD card for /boot and /root

USB-C SSD for data, partitioned into 1 NTFS for samba, 1 EXT4 for other data

SSH access only (and I don't have a micro HDMI so I can't connect to a monitor to see any boot errors)

I had a power outage and, upon the return of electricity, my rPI (4.0) won't boot properly.

I've localized the issue to the fstab line which (attempts to) mount the SSD/EXT4 partition. If i comment it out, the Pi boots properly. If I run fstab with the line, it hangs up and won't boot properly (I need to then manually edit the fstab file on the SD card on another machine to re comment-out the offending line).

I can re-mount the EXT4 partition manually and it works just fine. fstab entry is:

 PARTUUID=BLAHBLAH-02 /mnt/cloud ext4 default 0 0

(BLAHBLAH-01 is the PARTUUID for the correctly-mounting NTFS partition)

Possible issues:

  1. fdisk reports the ext mount as ID 7 | TYPE HPFS/NTFS/exFAT not EXT 4?

  2. blkid reports the correct partition ID, but lsblk does not (it omits the -01 and -02)?

Any thoughts?

1 Answer 1


I think I figured it out. my fstab entry had "default", but apparently correct syntax is "defaults"

i corrected this and it appeared to boot up properly.

  • Add option "nofail" if you wan it to boot while the SSD is unplugged or non-responsive.
    – svin83
    Commented Feb 3, 2021 at 7:29

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