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Zdravím,

z ničeho nic mi dnes vytuhnul systém. Musel jsem jej natvrdo vypnout. Pak už nebootoval. Nahodil jsem jiný OS a na EFI pustil fsck.fat. Program mi oznámil, že je tam dirty flag a jestli jej chci smazat. Nesmazal jsem jej, ale protože systém stále nebootoval, tak jsem jej nakonec smazal. Systém stále nebootoval a tak jsem si řekl, že jej obnovím Clonezillou. Ta disk neviděla a psala něco o špatném superbloku. Na disku jsem tedy vytvořil novou tabulku oddílů gpt a naformátoval jej na ext4. Disk ale stále zlobil a tak jsem gpt + ext4 vytvořil znovu, ale stále zlobil. Sám se odpojoval a zase připojoval. Pustil jsem na něj fsck.ext4 a dostal jsem výpis viz. níže, ve kterém stojí, že je něco se superblokem. Zkusil jsem i jiné velikosti dle rady programu, ale se stejným výsledkem. Půjde s tím prosím něco udělat?

~$ sudo fsck.ext4 /dev/sdb
e2fsck 1.45.5 (07-Jan-2020)
ext2fs_open2: Chybné magické číslo v superbloku
fsck.ext4: Neplatný superblok, zkouším záložní bloky…
fsck.ext4: Chybné magické číslo v superbloku při pokusu otevřít /dev/sdb

Superblok nemohl být načten nebo nepopisuje správný systém souborů
ext2/ext3/ext4. Pokud je zařízení platné a opravdu obsahuje systém
souborů ext2/ext3/ext4 (a ne swap nebo UFS nebo něco jiného), pak je
superblok poškozen a můžete zkusit spustit e2fsck s jiným superblokem:
    e2fsck -b 8193 <zařízení>
nebo
    e2fsck -b 32768 <zařízení>

Nalezena tabulka rozdělení disku gpt v /dev/sdb

~$ sudo smartctl -x /dev/sdb
[sudo] heslo pro petr:                     
smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.9.3-050903-generic] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Samsung based SSDs
Device Model:     Samsung SSD 850 EVO 500GB
Serial Number:    S21JNXAGB29850D
LU WWN Device Id: 5 002538 d407c9484
Firmware Version: EMT02B6Q
User Capacity:    500 107 862 016 bytes [500 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4c
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Tue Nov  3 20:46:18 2020 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM feature is:   Unavailable
Rd look-ahead is: Enabled
Write cache is:   Enabled
DSN feature is:   Unavailable
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x00)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0)	The previous self-test routine completed
					without error or no self-test has ever 
					been run.
Total time to complete Offline 
data collection: 		(    0) seconds.
Offline data collection
capabilities: 			 (0x53) SMART execute Offline immediate.
					Auto Offline data collection on/off support.
					Suspend Offline collection upon new
					command.
					No Offline surface scan supported.
					Self-test supported.
					No Conveyance Self-test supported.
					Selective Self-test supported.
SMART capabilities:            (0x0003)	Saves SMART data before entering
					power-saving mode.
					Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
					General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   2) minutes.
Extended self-test routine
recommended polling time: 	 ( 265) minutes.
SCT capabilities: 	       (0x003d)	SCT Status supported.
					SCT Error Recovery Control supported.
					SCT Feature Control supported.
					SCT Data Table supported.

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  5 Reallocated_Sector_Ct   PO--CK   100   100   010    -    0
  9 Power_On_Hours          -O--CK   096   096   000    -    16243
 12 Power_Cycle_Count       -O--CK   094   094   000    -    5252
177 Wear_Leveling_Count     PO--C-   096   096   000    -    75
179 Used_Rsvd_Blk_Cnt_Tot   PO--C-   100   100   010    -    0
181 Program_Fail_Cnt_Total  -O--CK   100   100   010    -    0
182 Erase_Fail_Count_Total  -O--CK   100   100   010    -    0
183 Runtime_Bad_Block       PO--C-   100   099   010    -    0
187 Uncorrectable_Error_Cnt -O--CK   100   100   000    -    0
190 Airflow_Temperature_Cel -O--CK   073   051   000    -    27
195 ECC_Error_Rate          -O-RC-   200   200   000    -    0
199 CRC_Error_Count         -OSRCK   099   099   000    -    53
235 POR_Recovery_Count      -O--C-   099   099   000    -    465
241 Total_LBAs_Written      -O--CK   099   099   000    -    47236120647
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      1  Comprehensive SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x09           SL  R/W      1  Selective self-test log
0x10       GPL     R/O      1  NCQ Command Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xa1           SL  VS      16  Device vendor specific log
0xa5           SL  VS      16  Device vendor specific log
0xce           SL  VS      16  Device vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

Warning! SMART Selective Self-Test Log Structure error: invalid SMART checksum.
SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
  255        0    65535  Read_scanning was never started
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
Device State:                        SCT command executing in background (5)
Current Temperature:                    27 Celsius
Power Cycle Min/Max Temperature:     27/40 Celsius
Lifetime    Min/Max Temperature:      0/70 Celsius
Under/Over Temperature Limit Count:  4294967295/4294901760
SMART Status:                        0xffff (Reserved)

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        10 minutes
Min/Max recommended Temperature:      0/70 Celsius
Min/Max Temperature Limit:            0/70 Celsius
Temperature History Size (Index):    128 (2)

Index    Estimated Time   Temperature Celsius
   3    2020-11-02 23:30     ?  -
 ...    ..(123 skipped).    ..  -
 127    2020-11-03 20:10     ?  -
   0    2020-11-03 20:20    40  *********************
   1    2020-11-03 20:30    27  ********
   2    2020-11-03 20:40    27  ********

SCT Error Recovery Control:
           Read: Disabled
          Write: Disabled

Device Statistics (GP/SMART Log 0x04) not supported

Pending Defects log (GP Log 0x0c) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2           11  Command failed due to ICRC error
0x0002  2            8  R_ERR response for data FIS
0x0003  2            8  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2           14  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2           14  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS
0x000f  2            0  R_ERR response for host-to-device data FIS, CRC
0x0010  2            0  R_ERR response for host-to-device data FIS, non-CRC
0x0012  2            0  R_ERR response for host-to-device non-data FIS, CRC
0x0013  2            0  R_ERR response for host-to-device non-data FIS, non-CRC