dual boot – Have 2 extra NTFS partitions (empty, 510 MB each) after installing Ubuntu 20.04 alongside Windows 7

I recently re-installed Ubuntu Focal Fossa 20.04 alongside Windows 7 Home Premium (Service Pack 1, 64 bit) as a dual-boot system; upgrade from Eoan Ermine 19.10 had failed, so used an ISO installation DVD for the task. Success! Both operating systems are working, but now there are 2 additional NTFS partitions on the Windows “My Computer” screen; each one is 510 megabytes in size, with only 12 kilobytes used for a Recycle bin. Why were these folders created? This didn’t happen when I originally split the drive for the dual-boot installation of Ubuntu 19.10 and I used that partition this time for Ubuntu 20.04; may those empty partitions be safely deleted and the space given to the main Windows volume? I am running an ASUS laptop, octa-core, with a terabyte hard drive that is split evenly between the two operating systems.

Thanks in advance for your help. Aloha!

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This post has been edited by REENAFX: Yesterday, 07:55 PM

linux – MYSQL restarts every 5-10 minutes

Server configurations is CentOS, RAM: 40GB, 16 Cores.

We have even tried re-installing MYSQL Server.

5.7.34 – MySQL

PHP version: 7.3.27

My mysql_error.log :

       2021-05-28T09:54:43.155971Z 0 (Note) Skipping generation of SSL certificates as certificate files are present in data directory.
2021-05-28T09:54:43.156581Z 0 (Warning) CA certificate ca.pem is self signed.
2021-05-28T09:54:43.156623Z 0 (Note) Skipping generation of RSA key pair as key files are present in data directory.
2021-05-28T09:54:43.156714Z 0 (Note) Server hostname (bind-address): '*'; port: 3306
2021-05-28T09:54:43.156745Z 0 (Note) IPv6 is available.
2021-05-28T09:54:43.156754Z 0 (Note)   - '::' resolves to '::';
2021-05-28T09:54:43.156762Z 0 (Note) Server socket created on IP: '::'.
2021-05-28T09:54:43.175386Z 0 (Note) Event Scheduler: Loaded 0 events
2021-05-28T09:54:43.175546Z 0 (Note) /usr/sbin/mysqld: ready for connections.
Version: '5.7.34'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL)
2021-05-28T09:54:43.214578Z 2 (Warning) IP address '192.168.1.54' could not be resolved: Name or service not known
2021-05-28T09:54:43.222613Z 3 (Note) Access denied for user 'Cpanel::MysqlUtils::Unprivileged'@'localhost' (using password: NO)
2021-05-28T09:54:43.629749Z 7 (Warning) Host name 'abts-mp-dynamic-085.253.70.182.airtelbroadband.in' could not be resolved: Name or service not known
2021-05-28T09:54:43.725291Z 8 (Warning) IP address '157.34.61.0' could not be resolved: Name or service not known
2021-05-28T09:54:43.769081Z 0 (Note) InnoDB: Buffer pool(s) load completed at 210528 15:24:43
2021-05-28T09:54:43.863610Z 10 (Warning) IP address '157.34.2.178' could not be resolved: Name or service not known
2021-05-28T09:54:43.926723Z 11 (Warning) IP address '157.34.213.66' could not be resolved: Name or service not known
2021-05-28T09:54:44.032514Z 12 (Warning) IP address '157.34.213.66' could not be resolved: Name or service not known
2021-05-28T09:54:45.316688Z 18 (Warning) IP address '157.34.57.161' could not be resolved: Name or service not known
2021-05-28T09:54:46.390635Z 24 (Warning) IP address '27.97.227.251' could not be resolved: Name or service not known
2021-05-28T09:54:58.454797Z 78 (Warning) IP address '47.247.220.170' could not be resolved: Name or service not known
2021-05-28T09:55:01.532038Z 99 (Note) Access denied for user 'root'@'localhost' (using password: YES)
2021-05-28T09:56:35.109571Z 518 (Warning) IP address '192.168.1.9' could not be resolved: Name or service not known
2021-05-28T10:00:01.420118Z 2002 (Note) Access denied for user 'root'@'localhost' (using password: YES)
2021-05-28T10:00:01.447711Z 2004 (Note) Access denied for user 'root'@'localhost' (using password: YES)
2021-05-28T10:00:01.612727Z 2005 (Note) Access denied for user 'root'@'localhost' (using password: YES)
2021-05-28T10:00:01.647162Z 2006 (Note) Access denied for user 'root'@'localhost' (using password: YES)
2021-05-28T10:00:01.648602Z 0 (Note) Giving 12 client threads a chance to die gracefully
2021-05-28T10:00:01.648631Z 0 (Note) Shutting down slave threads
2021-05-28T10:00:03.648737Z 0 (Note) Forcefully disconnecting 8 remaining clients
2021-05-28T10:00:03.648777Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 145  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648811Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 39  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648837Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 78  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648855Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 23  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648888Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 24  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648915Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 10  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648936Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 11  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648958Z 0 (Warning) /usr/sbin/mysqld: Forcing close of thread 18  user: 'wa2nukec_demo'

2021-05-28T10:00:03.648988Z 0 (Note) Event Scheduler: Purging the queue. 0 events
2021-05-28T10:00:03.649158Z 0 (Note) Binlog end
2021-05-28T10:00:03.650855Z 0 (Note) Shutting down plugin 'ngram'
2021-05-28T10:00:03.650870Z 0 (Note) Shutting down plugin 'partition'
2021-05-28T10:00:03.650874Z 0 (Note) Shutting down plugin 'BLACKHOLE'
2021-05-28T10:00:03.650877Z 0 (Note) Shutting down plugin 'ARCHIVE'
2021-05-28T10:00:03.650880Z 0 (Note) Shutting down plugin 'PERFORMANCE_SCHEMA'
2021-05-28T10:00:03.650896Z 0 (Note) Shutting down plugin 'MRG_MYISAM'
2021-05-28T10:00:03.650943Z 0 (Note) Shutting down plugin 'MyISAM'
2021-05-28T10:00:03.650960Z 0 (Note) Shutting down plugin 'INNODB_SYS_VIRTUAL'
2021-05-28T10:00:03.650965Z 0 (Note) Shutting down plugin 'INNODB_SYS_DATAFILES'
2021-05-28T10:00:03.650969Z 0 (Note) Shutting down plugin 'INNODB_SYS_TABLESPACES'
2021-05-28T10:00:03.650973Z 0 (Note) Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2021-05-28T10:00:03.650976Z 0 (Note) Shutting down plugin 'INNODB_SYS_FOREIGN'
2021-05-28T10:00:03.650983Z 0 (Note) Shutting down plugin 'INNODB_SYS_FIELDS'
2021-05-28T10:00:03.650995Z 0 (Note) Shutting down plugin 'INNODB_SYS_COLUMNS'
2021-05-28T10:00:03.651013Z 0 (Note) Shutting down plugin 'INNODB_SYS_INDEXES'
2021-05-28T10:00:03.651021Z 0 (Note) Shutting down plugin 'INNODB_SYS_TABLESTATS'
2021-05-28T10:00:03.651034Z 0 (Note) Shutting down plugin 'INNODB_SYS_TABLES'
2021-05-28T10:00:03.651043Z 0 (Note) Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2021-05-28T10:00:03.651049Z 0 (Note) Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2021-05-28T10:00:03.651061Z 0 (Note) Shutting down plugin 'INNODB_FT_CONFIG'
2021-05-28T10:00:03.651065Z 0 (Note) Shutting down plugin 'INNODB_FT_BEING_DELETED'
2021-05-28T10:00:03.651070Z 0 (Note) Shutting down plugin 'INNODB_FT_DELETED'
2021-05-28T10:00:03.651081Z 0 (Note) Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2021-05-28T10:00:03.651092Z 0 (Note) Shutting down plugin 'INNODB_METRICS'
2021-05-28T10:00:03.651095Z 0 (Note) Shutting down plugin 'INNODB_TEMP_TABLE_INFO'
2021-05-28T10:00:03.651100Z 0 (Note) Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2021-05-28T10:00:03.651111Z 0 (Note) Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2021-05-28T10:00:03.651122Z 0 (Note) Shutting down plugin 'INNODB_BUFFER_PAGE'
2021-05-28T10:00:03.651125Z 0 (Note) Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2021-05-28T10:00:03.651128Z 0 (Note) Shutting down plugin 'INNODB_CMP_PER_INDEX'
2021-05-28T10:00:03.651133Z 0 (Note) Shutting down plugin 'INNODB_CMPMEM_RESET'
2021-05-28T10:00:03.651141Z 0 (Note) Shutting down plugin 'INNODB_CMPMEM'
2021-05-28T10:00:03.651146Z 0 (Note) Shutting down plugin 'INNODB_CMP_RESET'
2021-05-28T10:00:03.651153Z 0 (Note) Shutting down plugin 'INNODB_CMP'
2021-05-28T10:00:03.651158Z 0 (Note) Shutting down plugin 'INNODB_LOCK_WAITS'
2021-05-28T10:00:03.651161Z 0 (Note) Shutting down plugin 'INNODB_LOCKS'
2021-05-28T10:00:03.651165Z 0 (Note) Shutting down plugin 'INNODB_TRX'
2021-05-28T10:00:03.651172Z 0 (Note) Shutting down plugin 'InnoDB'
2021-05-28T10:00:03.651228Z 0 (Note) InnoDB: FTS optimize thread exiting.
2021-05-28T10:00:03.651298Z 0 (Note) InnoDB: Starting shutdown...
2021-05-28T10:00:03.751412Z 0 (Note) InnoDB: Dumping buffer pool(s) to /home/mysql/mysql/ib_buffer_pool
2021-05-28T10:00:03.759679Z 0 (Note) InnoDB: Buffer pool(s) dump completed at 210528 15:30:03
2021-05-28T10:00:07.921158Z 0 (Note) InnoDB: Shutdown completed; log sequence number 25652060862711
2021-05-28T10:00:07.922788Z 0 (Note) InnoDB: Removed temporary tablespace data file: "ibtmp1"
2021-05-28T10:00:07.922803Z 0 (Note) Shutting down plugin 'MEMORY'
2021-05-28T10:00:07.922809Z 0 (Note) Shutting down plugin 'CSV'
2021-05-28T10:00:07.922836Z 0 (Note) Shutting down plugin 'sha256_password'
2021-05-28T10:00:07.922838Z 0 (Note) Shutting down plugin 'mysql_native_password'
2021-05-28T10:00:07.922935Z 0 (Note) Shutting down plugin 'binlog'
2021-05-28T10:00:07.951529Z 0 (Note) /usr/sbin/mysqld: Shutdown complete

2021-05-28T10:00:09.097619Z 0 (Warning) TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2021-05-28T10:00:09.097714Z 0 (Warning) 'NO_AUTO_CREATE_USER' sql mode was not set.
2021-05-28T10:00:09.097859Z 0 (Note) /usr/sbin/mysqld (mysqld 5.7.34) starting as process 19839 ...
2021-05-28T10:00:09.229060Z 0 (Note) InnoDB: PUNCH HOLE support available
2021-05-28T10:00:09.229109Z 0 (Note) InnoDB: Mutexes and rw_locks use GCC atomic builtins
2021-05-28T10:00:09.229113Z 0 (Note) InnoDB: Uses event mutexes
2021-05-28T10:00:09.229116Z 0 (Note) InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2021-05-28T10:00:09.229119Z 0 (Note) InnoDB: Compressed tables use zlib 1.2.11
2021-05-28T10:00:09.229130Z 0 (Note) InnoDB: Using Linux native AIO
2021-05-28T10:00:09.230206Z 0 (Note) InnoDB: Number of pools: 1
2021-05-28T10:00:09.230301Z 0 (Note) InnoDB: Using CPU crc32 instructions
2021-05-28T10:00:09.236964Z 0 (Note) InnoDB: Initializing buffer pool, total size = 68G, instances = 32, chunk size = 128M
2021-05-28T10:00:12.172317Z 0 (Note) InnoDB: Completed initialization of buffer pool
2021-05-28T10:00:12.633187Z 0 (Note) InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2021-05-28T10:00:12.644614Z 0 (Note) InnoDB: Highest supported file format is Barracuda.
2021-05-28T10:00:13.944852Z 0 (Note) InnoDB: Creating shared tablespace for temporary tables
2021-05-28T10:00:13.944945Z 0 (Note) InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2021-05-28T10:00:14.332308Z 0 (Note) InnoDB: File './ibtmp1' size is now 12 MB.
2021-05-28T10:00:14.333329Z 0 (Note) InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2021-05-28T10:00:14.333346Z 0 (Note) InnoDB: 32 non-redo rollback segment(s) are active.
2021-05-28T10:00:14.333658Z 0 (Note) InnoDB: Waiting for purge to start
2021-05-28T10:00:14.383804Z 0 (Note) InnoDB: 5.7.34 started; log sequence number 25652060862711
2021-05-28T10:00:14.383962Z 0 (Note) InnoDB: Loading buffer pool(s) from /home/mysql/mysql/ib_buffer_pool
2021-05-28T10:00:14.384093Z 0 (Note) Plugin 'FEDERATED' is disabled.
2021-05-28T10:00:14.386753Z 0 (Note) Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
2021-05-28T10:00:14.386772Z 0 (Note) Skipping generation of SSL certificates as certificate files are present in data directory.
2021-05-28T10:00:14.387703Z 0 (Warning) CA certificate ca.pem is self signed.
2021-05-28T10:00:14.387762Z 0 (Note) Skipping generation of RSA key pair as key files are present in data directory.
2021-05-28T10:00:14.387900Z 0 (Note) Server hostname (bind-address): '*'; port: 3306
2021-05-28T10:00:14.387943Z 0 (Note) IPv6 is available.
2021-05-28T10:00:14.387956Z 0 (Note)   - '::' resolves to '::';
2021-05-28T10:00:14.387965Z 0 (Note) Server socket created on IP: '::'.
2021-05-28T10:00:14.412269Z 0 (Note) Event Scheduler: Loaded 0 events
2021-05-28T10:00:14.412407Z 0 (Note) /usr/sbin/mysqld: ready for connections.
Version: '5.7.34'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL)
2021-05-28T10:00:14.453360Z 3 (Note) Access denied for user 'Cpanel::MysqlUtils::Unprivileged'@'localhost' (using password: NO)
2021-05-28T10:00:14.769372Z 5 (Warning) IP address '192.168.1.54' could not be resolved: Name or service not known
2021-05-28T10:00:14.816631Z 6 (Warning) IP address '47.247.220.170' could not be resolved: Name or service not known
2021-05-28T10:00:14.944144Z 8 (Warning) IP address '157.34.61.0' could not be resolved: Name or service not known
2021-05-28T10:00:15.150894Z 11 (Warning) IP address '157.34.213.66' could not be resolved: Name or service not known
2021-05-28T10:00:15.466660Z 12 (Warning) IP address '27.97.227.251' could not be resolved: Name or service not known
2021-05-28T10:00:15.707301Z 0 (Note) InnoDB: Buffer pool(s) load completed at 210528 15:30:15
2021-05-28T10:00:16.097762Z 2 (Warning) Host name 'abts-mp-dynamic-085.253.70.182.airtelbroadband.in' could not be resolved: Name or service not known
2021-05-28T10:00:22.149749Z 46 (Warning) IP address '157.34.2.178' could not be resolved: Name or service not known
2021-05-28T10:00:35.547443Z 113 (Warning) IP address '157.34.57.161' could not be resolved: Name or service not known
2021-05-28T10:00:37.329999Z 124 (Warning) IP address '192.168.1.9' could not be resolved: Name or service not known

My /etc/my.cnf file:

#(mysqld_safe)
#log-error=/var/log/mysql/mysql_error.log

(mysqld)
performance-schema=0
port=3306
#datadir=/data/mysql
datadir=/home/mysql/mysql
socket=/var/lib/mysql/mysql.sock

innodb_file_per_table=1
max_allowed_packet = 256M
max_connect_errors = 1000000 
symbolic-links=0

key_buffer_size=2G
log-error=/var/log/mysql/mysql_error.log
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1


#pid-file=/var/run/mysqld/mysqld.pid
#innodb_buffer_pool_size=134217728
innodb_buffer_pool_size=65G
open_files_limit=30000
#default-storage-engine=MyISAM

sql_mode = ""
max_connections=3000
innodb_rollback_on_timeout=1
query_cache_size=0
query_cache_type=0
query_cache_limit=1M
#tmp_table_size=15M
max_heap_table_size=48M
innodb_buffer_pool_instances=32
wait_timeout = 28800
innodb_log_file_size=12G

#bind-address    = 0.0.0.0


back_log = 512
thread_cache_size = 500
thread_stack = 192k
interactive_timeout = 180
#wait_timeout = 382


#server-id=6305508
#log_bin=mysql-bin
#log_error=mysql-bin.err
#binlog_ignore_db=wa2nukec_adminlite

#(client)
#port=3306
#socket=/var/lib/mysql/mysql.sock

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imac – My mac’s UI is randomly freezing for 5-10 seconds throughout the day. How can I figure out what’s going wrong?

I have a 2017 27″ iMac running macOS 10.14.6. Throughout the day the entire screen will freeze for a period of 5-10 seconds. This happens sporadically and there’s no consistent way to trigger it, but toggling Exposé and opening tabs in Safari seem to be the two biggest triggers.

While the screen is frozen, I can still move the cursor around, but I can’t interact with anything on screen. All clicks and keystrokes will be delayed until the screen unfreezes, and then they’ll all haphazardly fire at once. I’ll still be able to hear audio from any application that’s running, including music, videos, voice calls, or video calls.

I tried reinstalling macOS 10.14.6 to fix the issue, but sadly that didn’t help. I read somewhere that one of the security updates released by Apple for 10.14.6 could introduce this issue, but I don’t have any security updates installed currently and the issue is still there, so that’s not it. I also have a 2019 MacBook Pro with 10.14.6 and much of the same software loaded on to it as my iMac, and it’s not experiencing this issue.

Is there anything I can do to debug this, or some other solution I can try?

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MacBook Pro doesn’t detect boot drive if turned off for ~5-10 minutes

I’m repairing a 13″ MacBook Pro Early 2011 (A1278). This will seem like a duplicate issue, but stick with me and you’ll see something odd is going on.

TDLR; Fixed missing/undetected boot drive issue with new SSD and SATA cable, or so I thought. The issue still persists, but I’ve discovered it only happens when the MacBook Pro is left shut off for more than ~5 minutes! If I shutdown, then reboot within a few seconds or 2-3 minutes it works. If I leave it much longer the boot fails with the folder and question mark icon!

This MacBook Pro has the “question mark on folder” boot issue – here’s a picture. This usually indicates a corrupt/failed boot drive or faulty SATA cable. I had the same issue on my own 2012 MacBook Pro a few years ago, and did the same repair (replace the cable and SSD upgrade) so I thought it would be easy.

The repair went smoothly. I got High Sierra installed on the new SSD by creating a bootable USB. Rebooted a few times afterwards to confirm all was well and considered it a job well done.

Unfortunately, when I tried to boot the MacBook Pro later in the day it displayed the error again on boot! I performed an SMC and PRAM reset and then it booted up. I assumed all was well.

I decided to verify my work a little later, and it failed to boot again!

It seems as though the issue occurs if the MacBook is left sitting without power for a while. If I leave it sit on the boot failure screen for a few minutes, then reboot, all is fine. I assume the original issue was never the old HDD or SATA cable, but something power related maybe?

I appreciate any ideas you have.