No grub boot so I can't start the computer

mbman88

Honorable
Apr 24, 2012
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10,510
I'm going to be as ridiculous detailed about the problem as possible. First and foremost the computer won't load grub dual boot loader. It has recently been reliable at loading "Checking NVRAM" and that makes it either show "read error" or "grub recovery". It's an Asus computer and so has an Asus motherboard.
Secondly, when I try to live disc boot from a usb-based distro I get the error "No caching mode page present".. which hadn't happened before.
I figure these things are specific enough that a fairly accurate guess could be made by someone familiar with hardware. I hope I'm right.. of course.
Finally, one thing I've been experiencing recently is my Linux Mint 13 operating very slowly, hanging, then returning back to normal speed, then hanging again. I thought it was happening during times of software load on hardware but I eventually had nothing running that used a lot of energy and it was still behaving slowly and/or unresponsively.
I'm attempting to diagnose it myself, assuming it's a harddrive failure or harddrive communication failure, but I was expecting the LIVE boots to work without a problem. Because they didn't I'm worried that it might be a "non-volatile RAM" problem... or some other motherboard issue. This would be disappointing even though it is a 5 year old computer.. and a laptop at that.
I'm going to continue trying to get it to load an OS by trying a LIVE OS again with the failsafe methods and if that doesn't work I will connect by old hard drive up via USB and try to boot Xubuntu... really old version but still runs perfect.. edition.

Update: Failsafe modes on flash usbs didn't work, not surprising. the USB harddisk doesn't seem to work, I think it only worked under grub.
To clarify, I seem to be able to get to "Grub rescue" after it says "unknown filesystem". On the Failsafe usb boots it continues to try booting after the messages (three) "No caching mode page present". But it fails anyways (doing the write-through, i think).
 

mbman88

Honorable
Apr 24, 2012
6
0
10,510


This must have been concluded from the "unknown filesystem" phrase..? Be aware that I also mentioned the LIVE OS's are not booting up, and that is unrelated to a corrupted harddrive. However, a BAD harddrive MIGHT be the problem ONLY if the live OS USB stick relies on harddrive cache. (or harddrive connection). But this small answer that does not explain the reasoning behind is insufficient.
 

mbman88

Honorable
Apr 24, 2012
6
0
10,510


Update and response. The computer apparently can host LIVE OS (install CDs and USB ISOs) but it takes a long time after many errors and timeouts. It indeed might be grub but it's taking me awhile to try and reinstall GRUB, as I do not have the original OS install disc or USB iso., I need to burn a new one and reinstall and that's being an issue in its own right. One of the timeout issues I've come across is a "udevd timeout killing /sbin/blkid" problem which apparently means the harddrive itself could be failing OR a partition has gotten corrupted and/or the root partition/bootloader has been changed or corrupted. So I will be attempting various disk scans for bad blocks.. but before that I'm backing up my filesystem and user files.

Sometimes we want an easy fix, but really it's just taking time to play out this mess. I still don't know what caused it. One forum I read hypothesized that it was a fan causing the harddrive to fail intermittently. So I removed the fan-pad for my laptop. The typical problem is when installing Windows it will write over the MBR data, but I haven't reinstalled Windows.