Hi, I am new to morphOS and have a question about changing the partition on DH0. Now is 8Gb and like to increase I tried and looks like I will loose all data on that partition. is there any away to change my partition without loose data and not to format that partition. something like Gpart on linux I can increase the size of the partition without loosing my system.
Thanks.
JSReis

Not really, but after a backup you might experiment a bit.

Resize
Reboot from install media
Run SFSDoctor

Never tried, but might work.

@ JSReis - I don't think resizing your HDD partition is possible without affecting (losing) the data formatting of that partition, even with SFSDoctor or by using HDConfig.

I'd suggest copying your partition details to a MicroSD card or similar, or even a spare HDD of at least the same capacity as the HDD you currently have that the data is on, and then taking the plunge and re-installing your new partition with MorphOSBootCD or a USB stick suitably formatted and after the HDD has been installed with MorphOS then copy ALL the files you wanted to preserve back onto the freshly installed HDD from the MicroSD or whatever you decide to use as your salvage/backup media. Also, when you copy it all back use the "replace all" option of copying so that even similar/same files from your backup are replaced so you get all the files on the re-installed system to what they were on your previous HDD.

I don't think that using the cloning option on your HDD system, as your older system was on a smaller HDD will work as easily, but that may be worth a try as well, or alternatively.

Remember if you use the Custom Install in the MorphOSBootCD installation process, you can choose a system partition of 123GB (SFS maximum), which is what I have - if you know what you are doing. It is fairly easy, but you also have to create the 80MB "BOOT" partition - though you can name it differently if you prefer. Also you don't need to keep to the conformity of naming your HDD partition as DH?, as you can name them almost anything you like, such as, SFSHDD0, SFSDH1, HFSB00T, as MorphOS is not like Windows (virtually restricted to C only). As I have quite a few systems I name all my HDDs differently in case I have to swap or use the HDD on a different system, so there is no clash of HDD naming!

If you haven't come across the option of making your MorphOS system a far more efficient multi-threaded OS, you should amend/edit the "Advanced.conf" file which is probably languishing in Prefs/Env-Archive/Ambient, so that the line "donotputrefwindowtosleep - has the "semi-colon (;) removed from the left side of that line of text, and the extra wording added onto the right side of that same line "= true", so that it then reads "donotputrefwindowtosleep = true". If that config file is not actually in the directory I mention then you may need to look in the MorphOS (MOSSYS) directory and go to its Prefs directory and the same directory tree and find the file there and copy/paste it to the System/Prefs directory tree.

This feature makes it possible for you to copy multiple files from the same window without the system displaying a "busy egg-timer" until it copies the initial set or even an individual file(s) and then allows you to copy more files. It is a great improvement over the initial default setup.

Hope this info is of some use to you.

> I don't think resizing your HDD partition is possible
> without affecting (losing) the data formatting of that
> partition, even with SFSDoctor or by using HDConfig.

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=12847&forum=3&start=3 (#4-#8)
https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=7769&forum=3&start=4 (#5-#8)

An alternative solution:

1. Before
- Make sure you have a valid bootable MorphOS CD
- Make a backup of your original System partition and the partition after your System partition (DH2:?)

2. In HDConfig
- Delete DH2:
- Make two new partitions instead of DH2:
- 1. your new System partition (named "NewSys", 8GB)
- 2. your new DH2 (the rest)
- Disabled the "bootable" option in your original System partition.
- Enable the "bootable" option in your new System partition.
- Click on OK, save on HDConfig and quit HDConfig.

3. Copy
- Copy the content of the original System partition on the new System partition.
- Copy the content of the DH2: backup on the new DH2: partition (if it was not full of course)

4. Reboot
- If it works, you will have a new 8GB System partition (+ the old one, usable as a backup if you want).
- If it doesn't work, enable the "bootable" option in your original System partition and disable it on your new System partition.



[ Edited by Daff 21.05.2026 - 11:16 ]

Technically, it is no problem to expand a SFS partition within the generic maximum partition size restrictions, just the related number of bitmap blocks needs to be expanded and the 2nd rootblock on the very end of the partition needs to be rewritten.
We might provide a tool for that in the future, for now you can use SFSDoctor to sort of fix it as a workaround.

MorphOS 3.20 will also introduce a new SFS DosType to get rid of the current 128GB-1 partition and 4GB-1 filesize limitation, so some way to convert old SFS type partitions to the new format might be reasonable in the future as well.
For now, 3.20 will only provide adjustments to the known SFSDoctor tool to deal with checking/scanning partitions using the new SFS DosType and salvage/repair files if required.

@ cyfm - I seem to remember that there was also a download filesize limit, which I think was about 2GB, so what will be the download filesize limit, via Wayfarer (or OWB), with MorphOS v3.20?

As some sites have archives that can be much larger than you have mentioned, so it would be good to know what will not fail (just) before the archive completes!

What is the intended maximum that the newer (v3.20) MorphOS SFS partition size will allow, if it is larger than 128GB?

Quote:

Whatever Wayfarer does, I can't tell right away. The size will be limited by the file system that you write your files to. All the filesystems that typically had been used so far locally (e.g. SFS/PFS3/FFS) limited files to 2GB-1 or 4GB-1 32bit size.
Many legacy archive formats are typically limited to 2GB as well technically, even though formats like zip64 overcome that.
But all that is something that the new filesystem DosType is not going to address, it just provides means to store/load files larger than 4GB-1 based around the 64bit support built into MorphOS' dos.library.

Quote:

Basically 2TB (1024/2048 partition blocksize preferred then), both for partition and files. Obviously a file can't be larger than the partition it resides in ...