Garbz
No longer a newbie, moving up!
- Joined
- Oct 26, 2003
- Messages
- 9,713
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- Location
- Brisbane, Australia
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- Photos NOT OK to edit
Just this morning got a 'boot sector damaged or ....' message so I booted from a Windows Rescue Disk.
I had made a disk image after installing CC apps just 2 weeks ago and was able to restore from that successfully - thanks be to the image.
BUT............... should I take that as sign from the Computer Gods that my hard disk is on its way to hard disk heaven?
Should I press forward even more quickly with the conversion?
Chris, I thought the lack of trim resulted in physical damage to the drive by continually writing to the same "bits" or whatever? My understanding was that every time electrical charge was sent to a "bit" it was degraded in some way and that TRIM distributed that activity across the drive more evenly to avoid that condition.
What you're describing is wear levelling. That is a function of the controller and has nothing to do with the OS. All drives do this otherwise the drive wouldn't last very long. Yes writing to flash degrades the device.
TRIM on the other hand has to do with deletion. Flash can't write to a block that contains data. It needs to wipe that block first, and that is a huge performance hit since it's a very slow operation. Unfortunately computers never actually delete data. They just mark sectors on the disk as not in use (hence data recovery programs work). The TRIM command basically is a proper delete. The OS will mark the data as free, finish writing and then when nothing else is happening and the drive is idle, issue the TRIM command for the previously deleted files.
So without TRIM as the drive fills up because files are never truly deleted and when the drive is full every write operation comes with the overhead of a slow delete first.
