OK, looks like this might be both very simple & also impossible, at least for me because I'm not good at this... 😂
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RE: https://helvede.net/@jwcph/116345984620453107
OK, looks like this might be both very simple & also impossible, at least for me because I'm not good at this...
As far as I can tell I need to do this: https://gist.github.com/retpolanne/4172cafc108bdfff7084017d1925b74f
In fact I'm half-way through (via another guide), having managed to add the 1st partition, but adding the second one apparently requires that I know the exact size of the free space in blocks or it throws a "no space available" error & I have no idea how to find that
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RE: https://helvede.net/@jwcph/116345984620453107
OK, looks like this might be both very simple & also impossible, at least for me because I'm not good at this...
As far as I can tell I need to do this: https://gist.github.com/retpolanne/4172cafc108bdfff7084017d1925b74f
In fact I'm half-way through (via another guide), having managed to add the 1st partition, but adding the second one apparently requires that I know the exact size of the free space in blocks or it throws a "no space available" error & I have no idea how to find that
@jwcph Macs seem to make this SO hard! The (other) BSD Unixes can use GPT partitions and it's so much easier to deal with. Hope you get it sorted.
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@jwcph Macs seem to make this SO hard! The (other) BSD Unixes can use GPT partitions and it's so much easier to deal with. Hope you get it sorted.
@cybervegan Mac uses GPT partitions too, as far as I can tell - hell, the Terminal command for adding the header I'm missing is "gpt add"
but it still needs the block position & size, which I can't find... -
@cybervegan Mac uses GPT partitions too, as far as I can tell - hell, the Terminal command for adding the header I'm missing is "gpt add"
but it still needs the block position & size, which I can't find...@jwcph Yep known. I don't know how functional the rescue shell is, but if I recall correctly (and my recall is not to good ATM) the BSD got program can tell you the dimensions of the disk, or it may have been a separate utility. Let me see if I can dredge something up with a web search...
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@jwcph Yep known. I don't know how functional the rescue shell is, but if I recall correctly (and my recall is not to good ATM) the BSD got program can tell you the dimensions of the disk, or it may have been a separate utility. Let me see if I can dredge something up with a web search...
@cybervegan Much appreciated!
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@cybervegan Mac uses GPT partitions too, as far as I can tell - hell, the Terminal command for adding the header I'm missing is "gpt add"
but it still needs the block position & size, which I can't find...@jwcph I found the Mac is got manual online, and it's pretty similar to the Free BSD one. Looks like the command:
gpt show devicename
Might give you the info you need. "devicename" will be what the system calls your disk, usually /dev/(something).
You might be lucky, the manuals might be available - try:
man gpt
That might show you the "man page" for the gpt command. Exit with "q".
Edit: forgot to put in the link for the online man page https://www.manpagez.com/man/8/gpt/osx-10.6.php
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@jwcph I found the Mac is got manual online, and it's pretty similar to the Free BSD one. Looks like the command:
gpt show devicename
Might give you the info you need. "devicename" will be what the system calls your disk, usually /dev/(something).
You might be lucky, the manuals might be available - try:
man gpt
That might show you the "man page" for the gpt command. Exit with "q".
Edit: forgot to put in the link for the online man page https://www.manpagez.com/man/8/gpt/osx-10.6.php
@cybervegan Thank you
I found out about gpt show, but unfortunately it doesn't reveal free space for each partition... I've tried various ways to find out how big the partition might be in total, so I can subtract the blocks from gpt show - but it has to be accurate & none of the numbers I've found & tried so far have worked. You can see an example of the math here: https://apple.stackexchange.com/questions/453666/restore-partitions-table - I'm just very, very bad at that sort of thing & haven't worked out the math of my sitch yet... 
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@cybervegan Thank you
I found out about gpt show, but unfortunately it doesn't reveal free space for each partition... I've tried various ways to find out how big the partition might be in total, so I can subtract the blocks from gpt show - but it has to be accurate & none of the numbers I've found & tried so far have worked. You can see an example of the math here: https://apple.stackexchange.com/questions/453666/restore-partitions-table - I'm just very, very bad at that sort of thing & haven't worked out the math of my sitch yet... @jwcph Yes, it's finicky as f... essentially you will have to follow that guide and adjust the figures for your device. Worth using a spreadsheet to calc the numbers and take your time.
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@jwcph Yes, it's finicky as f... essentially you will have to follow that guide and adjust the figures for your device. Worth using a spreadsheet to calc the numbers and take your time.
@cybervegan I'm already trying that - did I mention I'm bad at it?
Oh well, I'll take another look tomorrow...
