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choosing between mbr/bios or gpt memes
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1clue
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PostPosted: Wed Aug 08, 2018 2:00 pm    Post subject: Reply with quote

Re: Swap.

I mostly work on server systems, and as such I don't use hibernate. However I use tmpfs anywhere I can, provided I think it will help something. My tmpfs allocations are sometimes over-large, meaning that if they all filled up I would need swap space on the disk.

I consider the act of swapping RAM to disk to be an error condition, a last-ditch attempt to finish the process without crashing. I use swap, but I use it as an indicator that something is broken or needs updating.

If I notice that swap has been used and the system is found to be running correctly, I'll add RAM if possible.

That said, I still make a large swap file, usually on multiple disks, and it often adds up to twice RAM. It usually never gets used. The size is minuscule compared to the size of the disk.
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Tony0945
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PostPosted: Wed Aug 08, 2018 2:10 pm    Post subject: Reply with quote

1clue wrote:
While I haven't installed onto bare metal for awhile now, I decided to only make EFI systems from this point forward, unless hardware prevents it.

Me too. The system I'm working on right now is MBR because the hard drive is from the old box. I'm thinking of getting an SSD. When I do, I'll format it GPT and copy my root partition onto it.
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Anon-E-moose
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PostPosted: Wed Aug 08, 2018 2:18 pm    Post subject: Reply with quote

Interesting read (at least to me as I haven't really gotten into gpt, efi, etc) http://www.system-rescue-cd.org/disk-partitioning/The-new-GPT-disk-layout/
and yes, it's a little dated, as it says windows can't be installed on gpt formatted disks, but still useful info for making decisions.
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NeddySeagoon
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PostPosted: Wed Aug 08, 2018 6:46 pm    Post subject: Reply with quote

1clue,

Thank you for that MBR link.
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1clue
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PostPosted: Wed Aug 08, 2018 7:35 pm    Post subject: Reply with quote

NeddySeagoon wrote:
1clue,

Thank you for that MBR link.


It pointed out that we were both right and both wrong on our statements. It was made for the 10mb hdd, not the 5mb ones like I said. I remember the time but got the details wrong. The <10mb drives were what you said, just big floppies. Which if I remember right was really slow because you wound up with so many files to search.

What surprises me about that is that the original design was built for a 10mb hdd and the limit at that first revision was 32mb. Really poor design decisions IMO.

I remember Mac OS used GPT partition tables and at the time I thought it was a mac-only thing. I remember trying to get an extended partition table set up on a mac and cussing a storm up, not realizing the differences.

What truly blows my mind is that MBR still has the following it has 20 or so years after GPT was introduced into the wild.
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NeddySeagoon
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PostPosted: Wed Aug 08, 2018 8:20 pm    Post subject: Reply with quote

1clue,

Quote:
What surprises me about that is that the original design was built for a 10mb hdd and the limit at that first revision was 32mb. Really poor design decisions IMO.

The original partition table used the CHS addressing mechanisim, that was good to 2GB, from memory.
It was the FAT16 one cluster is one disk sector, of the day that imposed the 32MB limit.
FAT16 has at most, 64K entries. The MSDOS filesystem cluster size increased over the years to allow partitions to be bigger.
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