OS troubleshooting Flashcards
OS not found error?
Implies no hard drive
Bootmgr not found?
Implies OS is there, but mootmgr/bcd is busted
What is bcd
Boot configuration data - holds Bootmanager and boot loader information for each OS in the system. No BCD, no OS.
What is a likely cause for a no boot device found error?
A USB messing up boot order
What is win RE
Windows recovery environment - holds troubleshooting tools to fix your shit
What are two methods to enter win RE
Installation media
Spam restarting
You can’t access bootrec commands in a command prompt while signed into windows. Why?
It’s only available in win RE
What does bootrec cmds do?
Fixes MBR, Bootmanager, bootloader, etc.
What does bootrec /fixboot do?
Rebuilds boot sector
What does bootrec /mbr do?
Fixes mbr
What does bootrec /rebuild mbr do
Searches for any OS installations that aren’t currently within the BCD list and gives you options for adding them manually.
What is a boot sector?
The part of a disk that holds the items necessary to boot an OS. This is what BIOS looks for upon start up.
Bios > Boot sector. Boot sector contains mbr, bootmgr, etc.
What does bcdedit do if typed into cmd
Shows your info on your boot manager and boot loader. Combined, this is your bcd.
How do you export your bcd data in cmd?
bcdedit /export [filename] you import the same way
What dangerous diskpart command will wipe your drive of all partitions and data. A last resort.
diskpart
clean
True or false: Windows refresh in Windows RE will keep your programs and only rebuild windows.
False, it’ll delete all your shit but keep your windows settings after rebuilding.
How do you get to safemode in win 7
Spam f8 after bios but before windows screen
How do you get to safe mode in win 8+
Recovery media or forced restart. OR hold shift while pressing restart in windows.
What is a good method to test faulty video drivers
Low-resolution safemode
What is the hidden admin account that comes with windows?
A powerful account hidden in windows you can’t see. Only use for troubleshooting or when needed.
How do you activate the hidden windows account
net user administrator /active:yes
Why are dll files important?
Many critical windows processes and services rely on them
How do you fix a bad windows dll?
sfc /scannow
Name four windows troubleshooters
Printer
Internet
Network adapter
Audio
If you are having an issue with your PC, what are three of the best places to look for info and fixes.
Device manager
Security and Maintenance
Troubleshooters
What are Two features of Sex and Maint?
Reliability history
Drive status
What program do you run when an a program is likely designed for an older version of windows?
Compatibility troubleshooter
What is the name of the win 7 and 10 individual file recovery system?
System Protection
How do you see your system protection checkpoints on a file?
R.Click, properties, Previous versions
How do you change your System Protection settings?
Right click your pc in file explorer, go to system protection
A computer doesn’t boot and gives a “Invalid boot disk” error. What’s the likely cause?
Hardware issue.
