Creating a large partition and booting off it
(New page: I found it is possible to add a partition to the internal flash card. WARNING: Using this recipe you will loose MyDocs. umount /home/user/MyDocs /home cannot be umounted, unfortunately...) |
(Rewrote it) |
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I found it is possible to add a partition to the internal flash card. | I found it is possible to add a partition to the internal flash card. | ||
| - | |||
| + | == WARNING: Using this recipe you will loose MyDocs. == | ||
| + | Make a backup of MyDocs! | ||
| + | |||
| + | = Creation of the new partition = | ||
umount /home/user/MyDocs | umount /home/user/MyDocs | ||
| Line 7: | Line 10: | ||
Use parted to shrink the MyDocs partition (on my N900 it was the 1st one) | Use parted to shrink the MyDocs partition (on my N900 it was the 1st one) | ||
| + | parted /dev/mmcblk0 print | ||
| + | parted /dev/mmcblk0 1 resize 1kb 25GB | ||
reboot | reboot | ||
| Line 12: | Line 17: | ||
Use fdisk to | Use fdisk to | ||
# remove the first partition (Because parted makes it not end on a cylinder boundary) | # remove the first partition (Because parted makes it not end on a cylinder boundary) | ||
| - | # recreate the exactly same partition again (this time ending on a cylinder boundary) | + | # recreate the exactly same partition again (this time ending on a cylinder boundary) Make sure to specify "TYPE C" for vfat |
# add the 4th partition right after the 1st one | # add the 4th partition right after the 1st one | ||
reboot | reboot | ||
| - | Enjoy the new partition. | + | Enjoy the new partition. |
| + | The result might look similar to this one | ||
| + | Disk /dev/mmcblk0: 32.0 GB, 32015122432 bytes | ||
| + | 4 heads, 16 sectors/track, 977024 cylinders | ||
| + | Units = cylinders of 64 * 512 = 32768 bytes | ||
| + | Disk identifier: 0x000c260e | ||
| + | |||
| + | Device Boot Start End Blocks Id System | ||
| + | /dev/mmcblk0p1 1 762940 24414072 c W95 F AT32 (LBA) | ||
| + | /dev/mmcblk0p2 884866 950401 2097152 83 Linux | ||
| + | /dev/mmcblk0p3 950402 974977 786432 82 Linux swap / Solaris | ||
| + | /dev/mmcblk0p4 762941 884865 3901600 83 Linux | ||
| + | |||
| + | == Using the new partition == | ||
| + | Using bootmenu.sh you can in fact boot from that partition. | ||
| + | (I got bootmenu.sh via svn from https://garage.maemo.org/plugins/scmsvn/viewcvs.php?view=rev&root=bootmenu&revision=53 using trunk/install_bootmenu) | ||
| + | |||
| + | Copy the stuff of your root dist to the new one | ||
| + | rsync -rlutopgxv / <mountpoint of new partition> | ||
| + | |||
| + | Copy the device tree (Sure this is too much, but not copying it will not work) | ||
| + | cp -af /dev/* <mountpoint>/dev | ||
| + | |||
| + | Using bootmenu.sh and this entry in /etc/bootmenu.d I can now boot into my new 3.7GB root drive | ||
| + | ITEM_NAME="Internal part 4" | ||
| + | ITEM_ID="mmc4" | ||
| + | ITEM_DEVICE="mmcblk0p4" | ||
| + | ITEM_MODULES="mbcache jbd ext2" | ||
| + | ITEM_FSTYPE="ext2" | ||
| + | ITEM_FSOPTIONS="noatime" | ||
| + | ITEM_LINUXRC="" | ||
| + | ITEM_FBMODE="" | ||
| + | |||
| + | == Result == | ||
| + | [root@phon:~/bootmenu]$ df -h | ||
| + | Filesystem Size Used Avail Use% Mounted on | ||
| + | rootfs 3,7G 524M 3,0G 15% / | ||
| + | ubi0:rootfs 228M 192M 33M 86% /mnt/initfs | ||
| + | /dev/mmcblk0p4 3,7G 524M 3,0G 15% / | ||
| + | tmpfs 1,0M 60K 964K 6% /tmp | ||
| + | tmpfs 256K 84K 172K 33% /var/run | ||
| + | none 10M 76K 10M 1% /dev | ||
| + | tmpfs 64M 4,0K 64M 1% /dev/shm | ||
| + | /dev/mmcblk0p2 2,0G 129M 1,8G 7% /home | ||
| + | /dev/mmcblk0p1 24G 7,9G 16G 34% /home/user/MyDocs | ||
Revision as of 20:41, 25 April 2010
I found it is possible to add a partition to the internal flash card.
Contents |
WARNING: Using this recipe you will loose MyDocs.
Make a backup of MyDocs!
Creation of the new partition
umount /home/user/MyDocs
/home cannot be umounted, unfortunately. But this didn't do any harm to /home
Use parted to shrink the MyDocs partition (on my N900 it was the 1st one)
parted /dev/mmcblk0 print parted /dev/mmcblk0 1 resize 1kb 25GB
reboot
Use fdisk to
- remove the first partition (Because parted makes it not end on a cylinder boundary)
- recreate the exactly same partition again (this time ending on a cylinder boundary) Make sure to specify "TYPE C" for vfat
- add the 4th partition right after the 1st one
reboot
Enjoy the new partition.
The result might look similar to this one
Disk /dev/mmcblk0: 32.0 GB, 32015122432 bytes
4 heads, 16 sectors/track, 977024 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Disk identifier: 0x000c260e
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 1 762940 24414072 c W95 F AT32 (LBA)
/dev/mmcblk0p2 884866 950401 2097152 83 Linux
/dev/mmcblk0p3 950402 974977 786432 82 Linux swap / Solaris
/dev/mmcblk0p4 762941 884865 3901600 83 Linux
Using the new partition
Using bootmenu.sh you can in fact boot from that partition. (I got bootmenu.sh via svn from https://garage.maemo.org/plugins/scmsvn/viewcvs.php?view=rev&root=bootmenu&revision=53 using trunk/install_bootmenu)
Copy the stuff of your root dist to the new one
rsync -rlutopgxv / <mountpoint of new partition>
Copy the device tree (Sure this is too much, but not copying it will not work)
cp -af /dev/* <mountpoint>/dev
Using bootmenu.sh and this entry in /etc/bootmenu.d I can now boot into my new 3.7GB root drive
ITEM_NAME="Internal part 4" ITEM_ID="mmc4" ITEM_DEVICE="mmcblk0p4" ITEM_MODULES="mbcache jbd ext2" ITEM_FSTYPE="ext2" ITEM_FSOPTIONS="noatime" ITEM_LINUXRC="" ITEM_FBMODE=""
Result
[root@phon:~/bootmenu]$ df -h Filesystem Size Used Avail Use% Mounted on rootfs 3,7G 524M 3,0G 15% / ubi0:rootfs 228M 192M 33M 86% /mnt/initfs /dev/mmcblk0p4 3,7G 524M 3,0G 15% / tmpfs 1,0M 60K 964K 6% /tmp tmpfs 256K 84K 172K 33% /var/run none 10M 76K 10M 1% /dev tmpfs 64M 4,0K 64M 1% /dev/shm /dev/mmcblk0p2 2,0G 129M 1,8G 7% /home /dev/mmcblk0p1 24G 7,9G 16G 34% /home/user/MyDocs