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# RumpDisk
The Hurd supports modern SATA devices like SSDs with RumpDisk. If you
successfully installed the Hurd in real hardware, via toggling the
"compatibility" mode in your BIOS, then the Hurd is probably using old
Linux drivers to access your hard drive/SSD. Even more problematic,
those drivers are baked into the GNU Mach kernel! With rumpdisk, you
can use SSDs on the Hurd and enjoy a max partition size of [[2
TiB|faq/2_gib_partition_limit]]!
If you want to test if the Hurd can boot with your SSD, change any
occurence of `hdN` in `/boot/grub/grub.cfg` to `wdN`, where `N` is a
number, and add the `noide` option on the `multiboot` line,
(which disables the old Linux disk drivers). Also change any occurence
of `hdN` in your `/etc/fstab` to `wdN`.
/boot/grub/grub.cfg
# multiboot /boot/gnumach-1.8-486.gz root=part:2:device:hd0 console=com0
multiboot /boot/gnumach-1.8-486.gz root=part:2:device:wd0 console=com0 noide
/etc/fstab
#/dev/hd0s2 / ext2 defaults 0 1
/dev/wd0s2 / ext2 defaults 0 1
#/dev/hd0s1 none swap sw 0 0
/dev/wd0s1 none swap sw 0 0
#/dev/hd2 /media/cdrom0 iso9660 noauto 0 0
/dev/wd2 /media/cdrom0 iso9660 noauto 0 0
Then reboot your machine. Before Grub appears change "compatibility"
in your BIOS to "AHCI" (not "RAID"). If you successfully boot,
congrats! You are now using rumpdisk! You can permanently add in the
"noide" option to grub:
/etc/default/grub
# make sure you add this next line somewhere in the file
GRUB_CMDLINE_GNUMACH="noide"
Now you can run `update-grub`. That way when you update the kernel,
you can be sure to use rumpdisk.
rumpdisk is normally already set up on `/dev/rumpdisk`.
$ showtrans /dev/rumpdisk
/hurd/rumpdisk
[[!inline pages=open_issues/running_rump_for_slash raw=yes feeds=no]]
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