5.3 Troubleshooting Storage Devices Flashcards
What is the problem likely with if the system cannot find a bootable device?
The problem is likely with the MBR or GPT
Give three error messages that may appear if the system cannot find a bootable device.
- Bootable device not found
- Operating system not found
- Invalid drive specification
Name three possible causes of a boot issue.
- SSD/Hard drive
- Removable media
- Network
What is GUID Partition Table (GPT)?
A specialised boot scheme with modern advantages
How do the UEFI and BIOS set the prioritised boot order?
Based on their configurations
Which storage device spins and moves the read/write head across the platter?
Hard disk drive (HDD)
Which drives have a limit on the amount of time to read and write data?
Solid-state drives
What problem would clicking or grinding noises indicate?
A hard disk drive mechanical problem
How can you stop a disk being used as a swap file or page file?
By adding more physical memory
Define a sector.
A physical spot on a formatted disk that holds information.
Define a block.
The smallest unit of data storage that is used to read or write data from/to a file.
What tool can you use to identify bad sectors and try to recover them?
Disk utility
What does SMART do?
Monitors the hard drive’s health status, monitors input/output operations per second (IOPS) and alerts the OS if there is a failure
Do HDDs or SSDs have a lower IOPS?
HDDs
What could low IOPS indicate?
An issue with the hardware or software
How can the cloud measure performance?
Cloud can measure performance by using IOPS
What causes fragmentation?
Deleting and rewriting.
What can the defragmentation tool do?
Put files back together and reduce read and write times.
What happens if a RAID loses a single disk?
It will continue to operate as normal but at a slower speed.
How do you rebuild a RAID after complete failure?
Restore from backup, reconfigure, and rebuild using new disks
