Plop Forum

General Category => Boot Managers => Topic started by: mattrix on January 13, 2017, 04:43:51 AM

Title: plop and logical partitions question
Post by: mattrix on January 13, 2017, 04:43:51 AM
Hi
Thankyou for making plop. Its ability to handle USB/CD is great but I'm having difficulty with logical partitions.
As I understand it, plop recognizes 2 partition tables on a disk.
The one in sector 1, that describes the primary partitions and an extended table that describes L1-L4.

I have tested this layout with freedos and tinycore linux  but both of them could only see the primaries and L1. Neither of them could see L2, L3, L4.

What do I have to do to use all 4 logical partitions?
Which OS can see the 4 logical partitions?
 
The problem is: plop can boot from L3 but I don't have anything that will put files on L3.

Title: Re: plop and logical partitions question
Post by: Elmar on January 13, 2017, 09:58:54 AM
Hello,

nowadays, partition programs are creating "cascaded extended partitions" which are not supported by the 5.0.x versions of the plop boot manager. L2, L3 and L4 are not working. Only classic extended/logical partitions are supported. With those is L2, L3 and L4 working.

The new boot manager will not have this limitation.

Best regards
Elmar
Title: Re: plop and logical partitions question
Post by: mattrix on January 13, 2017, 10:57:00 AM
Hi Elmar,

Thank you for that explanation.

Which classic OS did use flat extended partitions?

Regards,
matt
Title: Re: plop and logical partitions question
Post by: Elmar on January 13, 2017, 11:38:03 AM
fdisk of MS-DOS (maybe from FreeDOS too)
Windows 95 till maybe Windows 2000
maybe Windows XP too


Best regards
Elmar
Title: Re: plop and logical partitions question
Post by: mattrix on January 14, 2017, 06:13:02 AM
Hi Elmar,

I retract what I said in my first mail.

I could not get  freedos or tinycore linux to create a flat partition table.
However it appears that they will use a flat partition table if they find one, provided that it doesn't chain to a third partition table.

I was trying to set up a flat table to use with plop, and chaining another table for the OS to append whatever it wanted to the end of the chain. This did not work.

Regards,
matt