Error map
grub rescue unknown filesystem error: unknown filesystem. Entering rescue mode... grub rescue>
Linux · layer 6, Platform & cloud
Centre: this error. First ring: errors it is linked with (10). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (10)
EC2 status check failed: Instance reachability check failed (1/2 checks passed)
AWS can reach the host, but the operating system inside the instance isn’t responding — kernel panic, full disk, broken network c…
E: Could not get lock /var/lib/dpkg/lock-frontend — is another process using it?
apt can’t run because another package operation (often automatic updates) holds the dpkg lock.
cannot execute binary file: Exec format error
The program was built for a different CPU architecture or OS — e.g. an x86_64 binary on an ARM machine (Raspberry Pi, Graviton, A…
Your PC needs to be repaired: The Boot Configuration Data file is missing some required information (0xc000000f)
Windows Boot Manager can’t find a valid BCD entry or boot files — after disk changes, failed updates, cloning or dual-boot change…
bash: command not found
The shell can’t find an executable with that name in any directory on your PATH.
bash: /bin/rm: Argument list too long
A glob like * expanded to more file names than the kernel allows in one command (ARG_MAX), so the command never ran.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
The kernel booted but couldn’t mount the root filesystem — usually a missing or broken initramfs after a kernel update.
fork: Cannot allocate memory / ENOMEM
The kernel refused a memory allocation — RAM and swap are exhausted, or overcommit/cgroup limits block it.
Blue screen: INACCESSIBLE_BOOT_DEVICE (0x0000007B)
Windows lost access to the system drive during boot — storage driver/controller mode change, failed update, or disk/BCD problems.
Automatic Repair couldn't repair your PC — Log file: C:\Windows\System32\Logfiles\Srt\SrtTrail.txt
Windows failed to boot repeatedly and Startup Repair couldn’t fix it; SrtTrail.txt records the root cause it found.
Two steps away (26)
An error occurred (UnauthorizedOperation): You are not authorized to perform this operation. Encoded authorization failure message: ...
The IAM identity is missing an EC2 (or related) permission. The encoded message tells you exactly which action and resource were…
InsufficientInstanceCapacity: We currently do not have sufficient capacity in the Availability Zone you requested
AWS has no free capacity for that instance type in that Availability Zone right now.
VcpuLimitExceeded: You have requested more vCPU capacity than your current vCPU limit
Your account’s On-Demand (or Spot) vCPU quota for that instance family and region is used up.
Linux: Permission denied
Your user (or the service user) lacks read/write/execute permission on a file, directory or one of its parents.
user is not in the sudoers file. This incident will be reported.
Your account isn’t allowed to use sudo.
E: Unable to locate package (apt / apt-get install)
apt can’t find the package name in its package lists — the lists are stale, the repository isn’t enabled, or the name is wrong fo…
exec /usr/local/bin/docker-entrypoint.sh: exec format error
The container tried to run a binary built for a different CPU architecture (arm64 vs amd64) — or a script with a broken shebang /…
no matching manifest for linux/arm64/v8 in the manifest list entries
The image has no build for your CPU architecture — typically pulling an amd64-only image on an Apple Silicon Mac or ARM server.
Text file busy (ETXTBSY) when replacing or running a binary
You tried to overwrite an executable that is currently running, or run one that is still open for writing.
Windows Error 0x80070002: The system cannot find the file specified
A file or registry entry Windows expected is missing — common in Windows Update, backups and app installs.
Windows Error 0x80004005 (E_FAIL): Unspecified error
A generic failure code — the operation failed for a reason the component didn’t report precisely. Context decides the fix.
fatal: not a git repository (or any of the parent directories): .git
You ran a Git command outside a Git working tree.
Error: ENOENT: no such file or directory
A file or directory the program tried to open doesn’t exist at that path.
Xcode: Command PhaseScriptExecution failed with a nonzero exit code
A Run Script build phase (CocoaPods, React Native, Flutter, SwiftLint, Crashlytics…) failed. The real error is above this line in…
java.io.FileNotFoundException: config.properties (No such file or directory)
Java couldn’t open the file — wrong path relative to the working directory, missing file, or a classpath resource read as a file.
java.nio.file.NoSuchFileException: /path/file
An NIO Files operation targeted a path that doesn’t exist.
Error: EISDIR: illegal operation on a directory, read
A file API (readFile, writeFile, createReadStream) was given a directory path.
Killed / Out of memory: Killed process (Linux OOM killer)
The kernel ran out of memory and killed a process to recover — the program just prints “Killed” (exit code 137).
mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program
mount couldn’t mount the device — the filesystem type isn’t supported/installed, the partition is wrong, or the filesystem is dam…
Error: listen EADDRINUSE: address already in use :::3000
Another process is already listening on that port.
Kubernetes: OOMKilled (exit code 137)
The container used more memory than its limit, and the kernel killed it.
java.lang.OutOfMemoryError: Java heap space
The JVM ran out of heap memory and garbage collection couldn’t free enough.
Blue Screen: CRITICAL_PROCESS_DIED (Stop code 0x000000EF)
A process Windows can’t run without (csrss, wininit, smss…) stopped unexpectedly, so the system halted.
Blue screen: DPC_WATCHDOG_VIOLATION (0x00000133)
A driver spent too long at high priority (DPC level) — typically SSD/NVMe firmware, storage controller drivers (iaStorA.sys) or g…
Blue screen: WHEA_UNCORRECTABLE_ERROR (0x00000124)
The hardware reported an error Windows couldn’t recover from — CPU, RAM, overclock/undervolt, overheating or power delivery.
The User Profile Service failed the sign-in. User profile cannot be loaded.
Windows can’t load your profile — the profile registry entry or NTUSER.DAT is corrupt, or the Default profile is damaged.
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