Re: Hosed Grub with the push of a button

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max bianco wrote:
That sounds reasonable but as you point out the FAT partition now
occupies part of the LVM. I am wondering what kind of problems that
will cause during an upgrade.

I would venture it would probably honor whatever the fstab referenced. unless disk druid was inquisitive by design to perform checks for out of the ordinary problems with the partition table. I don't think the developers of the program counted on some crazy button changing the partition table with one touch.

I will back up the the few critical things, luckily there isn't much
as the laptop is only a month or two(maybe) old, though I would like
to restore F8 to working order at this point simply as a learning
exercise, that parts of the LVM will be unreadable will impact this
certainly but it looks like only the tail end is screwed, which would
explain why I couldn't list the contents of some directories, they
only contain mp3s, easily replaceable, but the rest of the user info
appears to be intact so maybe i will come out ahead after all.

It depends upon what happened when you hit that button. Did it write over that portion of the disk or did it actually format the portion and place information from some storage chip on the mother board. It does sound that it ignored the lvm since I see LVMs as raw disk space in Windows. The magic button probably is as dumb as windows recognition is. I guess since it is a mystery now what that magic button did, it will be a learning experience. Don't be surprised if fdisk is acts out of order since it will encounter a messed up partition table. It might just remove references to the fat and leave the lvm limits untouched.
Interesting problem but not one you would want to happen.


Once I get this mess straightened out, but before I upgrade to
Sulphur, I am going to find out how deeply embedded this stupid Dell
Media Direct Button is  in the system and try to nuke it. The thing
is it should not have survived the installation of Werewolf, could
this thing be linked to the BIOS? or was it a hidden partition? I
used the entire drive to install F8, I explicitly indicated that the
entire drive should be used, that all existing partitions should be
deleted/removed. Looks like I have some homework to do.

My guess would be that the motherboard has a chip inside that has a compressed image of what was originally installed on the computer, like what a install CD would have. hitting that button probably launches the flash image which expands it from the end of the disk on forward. That would explain why it took over the tail end of the LVM partitioned off space. There are probably no safeguards for the routine to check first what is setup before going to town and doing its thing. I think if you had a hidden partition it would be referenced in fdisk as a partition for diagnostics or something. I worked on a sony via where it was visible to fdisk as a compaq partition or something. I restored the computer simply by toggling the type to fat and making it active. It of course reinstalled over the whole disk and wiped out an excellent and fuly functional Fedora setup I had configured. It did put here OS back to factory settings though.

Back to the hidden partition, you removed everything. Storage mediums are getting pretty large capacity and since windows gets taken down by malware frequently the embedded restore facilities favor what was sold with the computer.

I am only guessing since the whole mess I would not have imagined some engineering group would develop. They did however.

Jim


Thanks

Max



--
If only I could be respected without having to be respectable.


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