Super User Asked by erik on January 10, 2021
I’m running pop_OS, and I have a folder on an old laptop hard drive in which I store my music. They weren’t organized, it was a mess, so a couple days ago I organized them in the following format, by creating new folders in the same folder and dragging and dropping the music files (using the default file manager):
artist folder
┗ album folder
┗ song file 1
song file 2
...
However, there is a problem. The last parts of most songs are overwritten with a completely different song. For example, say song x1 from artist y1 has a duration of 3:50, but when listening to the file, at around 3:00, song x2 from artist y2 starts playing (in the same MP3 file).
What could the problem be? Is there an easy fix or are my files screwed? I have very important files on that hard drive (the music I can download again though so it’s not a big problem), is the hard drive dying? SMART says "Disk is OK" and all the attributes are not even close to the threshold. The partition is NTFS
fsck exits with code 0, ntfsfix output is
Mounting volume... OK
Processing of $MFT and $MFTMirr completed successfully.
Checking the alternate boot sector... OK
NTFS volume version is 3.1.
NTFS partition /dev/sdb2 was processed successfully.
SMART attributes:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 100 100 051 Pre-fail Always - 2940
2 Throughput_Performance 0x0027 252 252 000 Pre-fail Always - 0
3 Spin_Up_Time 0x0023 094 090 025 Pre-fail Always - 1997
4 Start_Stop_Count 0x0032 086 086 000 Old_age Always - 14915
5 Reallocated_Sector_Ct 0x0033 252 252 010 Pre-fail Always - 0
7 Seek_Error_Rate 0x002f 252 252 051 Pre-fail Always - 0
8 Seek_Time_Performance 0x0025 252 252 015 Pre-fail Offline - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 9321
10 Spin_Retry_Count 0x0033 252 252 051 Pre-fail Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 815
12 Power_Cycle_Count 0x0032 096 096 000 Old_age Always - 4910
181 Program_Fail_Cnt_Total 0x0022 100 100 000 Old_age Always - 5116091
183 Runtime_Bad_Block 0x0032 252 252 010 Old_age Always - 0
184 End-to-End_Error 0x0033 252 252 048 Pre-fail Always - 0
186 Unknown_Attribute 0x0032 252 252 000 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 2808
188 Command_Timeout 0x0032 252 252 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0002 079 052 040 Old_age Always - 21 (Min/Max 13/50)
191 G-Sense_Error_Rate 0x0022 100 100 000 Old_age Always - 1079
192 Power-Off_Retract_Count 0x0022 100 100 000 Old_age Always - 9
193 Load_Cycle_Count 0x0032 068 068 000 Old_age Always - 331255
194 Temperature_Celsius 0x0002 064 052 000 Old_age Always - 21 (Min/Max 13/50)
195 Hardware_ECC_Recovered 0x003a 100 100 000 Old_age Always - 0
196 Reallocated_Event_Count 0x0032 252 252 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 252 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 252 252 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0036 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x002a 100 100 000 Old_age Always - 30369
The disk is old and not recommended for irreplaceable data, although its SMART attributes still seem healthy. At 10 years old, it has already lasted more than most such disks. I wouldn't recommend keeping on it irreplaceable data, at least not without another backup device.
As all tests of the file-system tests have succeeded, there is no reason to assume a hardware error. Certainly an error that systematically overwrites the last parts of most songs seems much too far-fetched.
The only reasonable explanation of such problem is software. I can't say which, since I don't know your installed applications and the history of this disk.
I would suggest to download again the music, which you say is not a big problem. I would also suggest to get a backup disk, and to keep a list of hash-values of the files on your disk, which you can check before syncing with the backup. This way, although much slower, you will detect corruption before it's written to the backup device, and could perhaps guess at its cause.
Correct answer by harrymc on January 10, 2021
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