OS/2, eCS & ArcaOS - Technical > Storage

How long is a HPFS CHKDSK?

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Dariusz Piatkowski:

--- Quote from: Roderick Klein on February 15, 2015, 05:43:10 pm ---...As for HPFS and the maxium size of the HPFS partition. In theory its 65 gigabyte but all to often have I seen HPFS volume bigger 15 to 20 GB run into a trouble running a CHKDSK. Simply because it was never that well tested with such large volumes...

--- End quote ---

My only comment on Roderick's post is that I have pretty much maxed out the HPFS386 partitions here on my machine, some 14 of them (so really 7 full-time use and 7 back-up partitions...yes, agree, not ideal but that was what I had available when I organized the install), subsequently the CHKDSK runs are pretty lengthy...but...they do complete each and every time. The partitions are either 60 or 64 Gig in size...all of them.

To the original poster: Erich, I would re-start the VM, let CHKDSK re-start and go from there...that is absolutely much too long of a runtime..my 14 partitions typically take about 10 mins...

Roderick Klein:

--- Quote from: Dariusz Piatkowski on February 15, 2015, 07:41:43 pm ---
--- Quote from: Roderick Klein on February 15, 2015, 05:43:10 pm ---...As for HPFS and the maxium size of the HPFS partition. In theory its 65 gigabyte but all to often have I seen HPFS volume bigger 15 to 20 GB run into a trouble running a CHKDSK. Simply because it was never that well tested with such large volumes...

--- End quote ---

My only comment on Roderick's post is that I have pretty much maxed out the HPFS386 partitions here on my machine, some 14 of them (so really 7 full-time use and 7 back-up partitions...yes, agree, not ideal but that was what I had available when I organized the install), subsequently the CHKDSK runs are pretty lengthy...but...they do complete each and every time. The partitions are either 60 or 64 Gig in size...all of them.

To the original poster: Erich, I would re-start the VM, let CHKDSK re-start and go from there...that is absolutely much too long of a runtime..my 14 partitions typically take about 10 mins...

--- End quote ---

Aaah did I miss it, or did you not write before you where using HPFS 386 ? HPFS 386 might still work better with larger volumes. But then again the chkdsk with HPFS 386 can maybe even be greater DUO to the ACL's on the file system.

Meeko:

--- Quote from: ivan on February 15, 2015, 01:24:18 pm ---The last time I did a chkdsk on a 20GB HPFS partition it took about 90 seconds.

May I ask why you want such a large HPFS partition in the first place?  Our standard partitioning on all our OS/2 machines and VMs is to have a 1GB HPFS boot partition and then several JFS partitions for such things as programs, data and storage.  On our test machine we have several 500GB JFS partitions created using the IBM JFS that appeared in one of the later fixpacks and with WSeB.

--- End quote ---

VirtualBox lets me create dynamic HDD images so I can declare 30 gigs while having a much smaller actual file. GParted does not support HPFS, so I went for a size big enough to essentially guarantee that I would never, ever want to expand it.

Even though my Linux host has a number of partitions, they were set up according to purpose. I don't want to use D: through T: just to overcome filesystem limitations. It's a throwback to MS/PC-DOS 2 users being forced to make numerous partitions to use then-big drives because of the biggest size supported by FAT12. It becomes an endless hassle of deciding where you are going to put something initially and copying/deleting to shuffle things volume to volume. Not to mention the even worse hassle of having to move applications or (heavens forbid) OS/2 itself from one drive letter to another. Shifting CD drive letters are trouble enough. Obviously I like the single tree better than the forest. At least in OS-9 (the Microware product, not the old MacOS version) didn't limit you to the end of the alphabet. I would have filled up the drive letters on my WinXP32 guest if not for NTFS allowing me to mount to a directory instead of a drive letter.

Dave Yeo:

--- Quote ---VirtualBox lets me create dynamic HDD images so I can declare 30 gigs while having a much smaller actual file. GParted does not support HPFS, so I went for a size big enough to essentially guarantee that I would never, ever want to expand it.
--- End quote ---

Might be a good practice to format the HDD image with the /long parameter so the partition is tested for bad blocks and forcing the dynamic HDD image to grow to its correct size.
You should always use OS/2 (or OS/2 aware) tools to partition as it is old enough to still use heads, cylinders, sectors internally and can get upset if partition boundaries are not on cylinder boundaries.
Even when setting up dual boot systems it is best to do the initial partitioning with OS/2 (or dfsee dfsee.com) then using Linux fdisk to change the partition type. By putting grub in /boot you can even use the OS/2 Bootmanager to boot linux.

OS/2 WSEB and eCS come with the LVM manager as well as JFS. The LVM manager allows manipulating drive letters so they can be anywhere and combined with JFS it is possible to grow a volume including having it larger then one partition

Meeko:

--- Quote from: Dave Yeo on February 16, 2015, 08:05:21 am ---OS/2 WSEB and eCS come with the LVM manager as well as JFS. The LVM manager allows manipulating drive letters so they can be anywhere and combined with JFS it is possible to grow a volume including having it larger then one partition

--- End quote ---

I used OS/2's FDISK to make partitions in the .vdi.

I started with Warp 4.0 but now have 4.50 after installing FP15 and a number of other updates. I probably do not have LVM. I am familiar with it since I use LVM on my laptop. The laptop runs Linux and has full disk encryption. I don't use VirtualBox on the laptop at all due to lack of RAM.

I got FreeJFS 1.1 to work, but in another thread you advised me not to trust it. So I made my HPFS volume and XCOPYed everything over.

I am not opposed to getting eCS, but my financial situation has to get better first. Until then everything has to be free.

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