COMP 3000 Lab 4 2010: Difference between revisions
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All of the following should be done with an Ubuntu 10.04 distribution or equivalent. We recommend experimenting in a virtual environment because some of the exercises could make your system unbootable. (In fact, take a snapshot of your working system before starting these exercises so you can easily revert.) | |||
==Questions== | |||
# Change the grub command line at boot to limit the total available RAM to 256M. You'll need to get to select an entry and edit it from within grub. | # Change the grub command line at boot to limit the total available RAM to 256M. You'll need to get to select an entry and edit it from within grub. | ||
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# Mount the standard kernel's initial ram disk (initrd). What program is first run in this environment? What does it do? | # Mount the standard kernel's initial ram disk (initrd). What program is first run in this environment? What does it do? | ||
# What programs does upstart start on boot? | # What programs does upstart start on boot? | ||
==Hints== | |||
Please add your hints below to help your fellow students! | |||
===Kernel command line options=== | |||
===GRUB configuration=== | |||
===How GRUB works=== | |||
===mounting RAM disks=== | |||
*You'll need to use a loopback mount: mount -o loop <device> <mountpoint> | |||
===Upstart/init=== | |||
Revision as of 16:03, 1 November 2010
All of the following should be done with an Ubuntu 10.04 distribution or equivalent. We recommend experimenting in a virtual environment because some of the exercises could make your system unbootable. (In fact, take a snapshot of your working system before starting these exercises so you can easily revert.)
Questions
- Change the grub command line at boot to limit the total available RAM to 256M. You'll need to get to select an entry and edit it from within grub.
- Add a new grub menu item which limits the standard kernel to 256M.
- Add a second virtual disk and make it bootable: put the kernel and initial ram disk on it and then install grub. Can you boot off of this disk? What does it do?
- Mount the standard kernel's initial ram disk (initrd). What program is first run in this environment? What does it do?
- What programs does upstart start on boot?
Hints
Please add your hints below to help your fellow students!
Kernel command line options
GRUB configuration
How GRUB works
mounting RAM disks
- You'll need to use a loopback mount: mount -o loop <device> <mountpoint>