Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(8,7)
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 18/100
- Issue type
- Bug
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- linux
- Domain
- embedded-iot, operating-systems
Research direction
Start with the boot configuration in /boot/cmdline.txt and the reported root device /dev/sda7, then review the kernel panic and the e2fsck command and result described in the update. Done would mean identifying whether the failure is attributable to the external USB root filesystem or boot configuration and documenting a reproducible diagnosis or fix.
Written by the indexing model from the issue text.
Description
Raspbian 10 and RPi4
It happened for several time, that i seen some errors that given me a suggestion like file system disconnected.
But this time after power cycling, it failed to start showing error:
Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(8,7)
as seen on the screenshot:
My system partition is on the external USB drive (made by clonning system SD card using Raspbian built in GUI disk cloner tool and then: sudo sed -i "s/mmcblk0p7/sda7/g" /boot/cmdline.txt
It worked good, numerous reboots, but suddenly fails.
What is the easiest way to discover cause or to likely fix it without clean install please?
>>> UPDATE <<<:
what worked was to unmount root partition and run following command on it: e2fsck -f -y -v -C 0 /dev/sda7
(replace partition path if you have different - command: lsblk)
- Dominant language
- C
- Stars
- 13.2k
- Forks
- 5.5k
- Avg merge
- 2d 21h
- Merged PRs (30d)
- 21
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
More from raspberrypi/linux
-
Difficulty 2/5 1-3 hours Newbie friendliness 68/100
raspberrypi/linux#7415 · 2 comments · 1 reaction ·
-
rp1-cfe doesn't forward V4L2_EVENT_SOURCE_CHANGE event from csi-2 sensor driver to userspace app Open
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
raspberrypi/linux#7399 · 1 comment ·
-
Difficulty 1/5 Under an hour Newbie friendliness 82/100
raspberrypi/linux#7357 · 1 comment ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 68/100
raspberrypi/linux#7054 · 2 comments ·
-
Difficulty 4/5 3-5 days Newbie friendliness 48/100
raspberrypi/linux#7634 · 8 comments · 1 reaction ·
All issues in raspberrypi/linux
Similar issues
-
Difficulty 2/5 1-3 hours Newbie friendliness 88/100
zephyrproject-rtos/zephyr#119726 ·
-
[Bounty proposal] fix(web): memory insights count an evening memory on the next day ($25 proposed) Open
Difficulty 2/5 1-3 hours Newbie friendliness 84/100
BasedHardware/omi#15320 ·
-
[adam] AdamNet network read doesn't cap to MAX_ADAM_PACKET_LEN, overflows client receive buffers Open
Difficulty 2/5 1-3 hours Newbie friendliness 88/100
FujiNetWIFI/fujinet-firmware#1649 · 2 comments ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 68/100
HarbourMasters/Shipwright#7229 ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
riscv-software-src/riscv-isa-sim#2435 · 1 comment ·