Re: trouble with fdisk and activate the swap
-BEGIN PGP SIGNED MESSAGE- On Fri, 3 Sep 1999, Michael Konrad wrote: I always set up my swap partition as a primary partition and I don't have that problem. I can never read the blocks right, but it looks like the swap partition is more than 128MB. You can set up multiple swap partitions but they can not be more than 128MB. The new style swap area (you need a recent kernel and mkswap. 2.2.x and potato's are sufficient) can support much larger areas, depending on the arch (sparc64 can use 3TB! i386 can use 2GB) - -- finger for PGP public key. -BEGIN PGP SIGNATURE- Version: 2.6.3ia Charset: noconv iQCVAwUBN9COiL7M/9WKZLW5AQEo6AP8DnY0zbsjAjifJ74EHxnC+LDoVL2XZejn GMUWvdhUN+T/DGjYPUMG2ctfYbyXn5s/b9WmSNHVy9YjrnAx7d6XEOIWkHz93pfr Wh5BxfFHJhwiszzjI0CEY4wVHgp8ndxzXiIhcf0yafXrkfHbYOX/XkYIHI+O3x/3 eanehR4WSEk= =gdla -END PGP SIGNATURE-
Re: trouble with fdisk and activate the swap
I always set up my swap partition as a primary partition and I don't have that problem. I can never read the blocks right, but it looks like the swap partition is more than 128MB. You can set up multiple swap partitions but they can not be more than 128MB. -Michael Michael Konrad Computer Consultant [EMAIL PROTECTED]College of Visual and Performing Arts Syracuse University 315-443-9367 Andrei Ivanov [EMAIL PROTECTED] 08/25/99 09:58PM Device Boot Start End Blocks Id System /dev/hda1 *1 4063 2047720+ 83 Linux native /dev/hda2 4064 8127 2048256 83 Linux native /dev/hda3 8128 8400 137592 82 Linux swap Wrong. You created Swap as a primary partition, but it has to be logical. (/dev/hda4 it will be) Syncing disks. Re-read table failed with error 16: Device or resource busy. Reboot your system to ensure the partition table is updated. My first question: why is it happening? Do I have to reboot?? This is ok. You have to reboot to update the partition table, but dont change the fstab file yet (you can, though) Once you boot it up, do mkswap /dev/hda4 Then swapon Andrew --- Andrei S. Ivanov [EMAIL PROTECTED] [EMAIL PROTECTED] UIN 12402354 http://scorpio.myip.org--All the pages bundled together. --- -- Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] /dev/null
Re: trouble with fdisk and activate the swap
-BEGIN PGP SIGNED MESSAGE- On Wed, 25 Aug 1999, Andrei Ivanov wrote: Device Boot Start End Blocks Id System /dev/hda1 *1 4063 2047720+ 83 Linux native /dev/hda2 4064 8127 2048256 83 Linux native /dev/hda3 8128 8400 137592 82 Linux swap Wrong. You created Swap as a primary partition, but it has to be logical. (/dev/hda4 it will be) No, this is wrong. A swap partition can be either primary or logical, Linux doesn't care. Also, if swap was a logical partition it would be /dev/hda5, not hda4 (hda4 could possibly be the extended partition containing all logical partitions.) Syncing disks. Re-read table failed with error 16: Device or resource busy. Reboot your system to ensure the partition table is updated. My first question: why is it happening? Do I have to reboot?? AFAIK, this is normal. Go ahead and reboot, but see below first. This is ok. You have to reboot to update the partition table, but dont change the fstab file yet (you can, though) YES change the fstab file first! Otherwise, you'll get errors like these: Partition check: hda: hda1 hda2 hda3 VFS: Mounted root (ext2 filesystem) readonly. Freeing unused kernel memory: 36k freed Unable to find swap-space signature Unable to find swap-space signature What you have now in /etc/fstab tells the system that hda1 is root, and hda2 is swap. However, since you repartitioned, hda1 and hda2 are both linux partitions and hda3 is now swap. But since you forgot to change /etc/fstab, it still looks for hda2 to be swap. Right now, your fstab should look something like this: /dev/hda1 / ext2defaults,errors=remount-ro 0 1 /dev/hda2 noneswapsw 0 0 You need to change that to reflect your new setup. For the purposes of this example, i'll assume that hda2 will now be /usr. Change the example to suit. /dev/hda1 / ext2defaults,errors=remount-ro 0 1 /dev/hda2 /usrext2defaults,errors=remount-ro 0 2 /dev/hda3 noneswapsw 0 0 Note that in the far right column that root has a 1, /usr has a 2, and swap has a 0. This tells the system to fsck hda1 in the first pass (before remounting root rw), hda2 in the second pass (just before doing mount -a), and not to fsck hda3 at all. In general, root should be 1, all other linux partitions should be 2, and all non-linux partitions (swap, windows, etc) should be 0. Once you boot it up, do mkswap /dev/hda4 Then swapon Correct except /dev/hda3 instead of hda4. swapon is technically unnecessary if you're going to reboot right away. You should also need to create a filesystem on hda2. mke2fs /dev/hda2 should be sufficient. You may need to reboot after repartitioning before this will work right! Also, make sure hda2 is umounted before you do this. - -- finger for PGP public key. -BEGIN PGP SIGNATURE- Version: 2.6.3ia Charset: noconv iQCVAwUBN8Xobr7M/9WKZLW5AQHw+AQAoA5W4N9R/ahnWGIecmLY6R769Zwh4haa TyQQePGuauTHR5oi5LXybtWLf/7Fdm+iUi8GZhIjqLwkO4h4VRdk/Xuh373Wxr5D Myvm5a/36Z4sC7LtEHN6y6hUfNLtRwAG+n3iGyqpuIUjnYkmPrqmcOTchT+ydq4J YuzHD+sB2V8= =f+Ri -END PGP SIGNATURE-
trouble with fdisk and activate the swap
Hi, Recenltly, I repartitioned my harddisk. What I did is to delete the swap parttion(/dev/hda2), created a 2gig linux partition(/dev/hda2), then created a swap partition(/dev/hda3). My fdisk output looks like this: Command (m for help): p Disk /dev/hda: 16 heads, 63 sectors, 8400 cylinders Units = cylinders of 1008 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 *1 4063 2047720+ 83 Linux native /dev/hda2 4064 8127 2048256 83 Linux native /dev/hda3 8128 8400 137592 82 Linux swap Command (m for help): Now, when I do a w command, I get the following: Syncing disks. Re-read table failed with error 16: Device or resource busy. Reboot your system to ensure the partition table is updated. WARNING: If you have created or modified any DOS 6.x partitions, please see the fdisk manual page for additional information. My first question: why is it happening? Do I have to reboot?? Anyway I did a reboot as suggested. But linux still cannot see the new swap partitions created, dmesg shows the following: Partition check: hda: hda1 hda2 hda3 VFS: Mounted root (ext2 filesystem) readonly. Freeing unused kernel memory: 36k freed Unable to find swap-space signature Unable to find swap-space signature My second question: How do I activate the swap partition?? Thanks for the help. Shao. -- Shao Zhang - Running Debian 2.1 ___ _ _ Department of Communications/ __| |_ __ _ ___ |_ / |_ __ _ _ _ __ _ University of New South Wales \__ \ ' \/ _` / _ \ / /| ' \/ _` | ' \/ _` | Sydney, Australia |___/_||_\__,_\___/ /___|_||_\__,_|_||_\__, | Email: [EMAIL PROTECTED] |___/ _
Re: trouble with fdisk and activate the swap
Device Boot Start End Blocks Id System /dev/hda1 *1 4063 2047720+ 83 Linux native /dev/hda2 4064 8127 2048256 83 Linux native /dev/hda3 8128 8400 137592 82 Linux swap Wrong. You created Swap as a primary partition, but it has to be logical. (/dev/hda4 it will be) Syncing disks. Re-read table failed with error 16: Device or resource busy. Reboot your system to ensure the partition table is updated. My first question: why is it happening? Do I have to reboot?? This is ok. You have to reboot to update the partition table, but dont change the fstab file yet (you can, though) Once you boot it up, do mkswap /dev/hda4 Then swapon Andrew --- Andrei S. Ivanov [EMAIL PROTECTED] [EMAIL PROTECTED] UIN 12402354 http://scorpio.myip.org--All the pages bundled together. ---
Re: trouble with fdisk and activate the swap
Subject: Re: trouble with fdisk and activate the swap Date: Wed, Aug 25, 1999 at 08:57:58PM -0500 In reply to:Andrei Ivanov Quoting Andrei Ivanov([EMAIL PROTECTED]): Device Boot Start End Blocks Id System /dev/hda1 *1 4063 2047720+ 83 Linux native /dev/hda2 4064 8127 2048256 83 Linux native /dev/hda3 8128 8400 137592 82 Linux swap Wrong. You created Swap as a primary partition, but it has to be logical. (/dev/hda4 it will be) Why is this wrong? I have looked at all the swap man pages and find no mention of having to use a logical partition. I also found no reference to that in any of the kernel Doc pages. In fact here is an excerpt from the /usr/src/linux/Documentation/ide.txt /dev/hda1 from cyl1 to 992 dos /dev/hda2 from cyl 993 to 1023 swap /dev/hda3 from cyl 1024 to 2100 linux I was supprised to learn from this search, that the swap partition can be as large as 2 Gig, in the 2.2.x kernels. Could you please point me to some references for your statement? Thanks Wayne -- It works! Now if only I could remember what I did... ___ Wayne T. Topa [EMAIL PROTECTED]
Re: trouble with fdisk and activate the swap
On Thu, 26 Aug, 1999 à 11:49:05AM +1000, Shao Zhang wrote: Hi, Recenltly, I repartitioned my harddisk. What I did is to delete the swap parttion(/dev/hda2), created a 2gig linux partition(/dev/hda2), then created a swap partition(/dev/hda3). [...] Anyway I did a reboot as suggested. But linux still cannot see the new swap partitions created, dmesg shows the following: [...] Unable to find swap-space signature Unable to find swap-space signature My second question: How do I activate the swap partition?? You could have found the answer in two steps : -$ apropos swap would have listed you all the man pages dealing with swap, then -$ man mkswap would have explained to you all that you needed. -- ( - Laurent PICOULEAU - ) /~\ [EMAIL PROTECTED] /~\ | \)Linux : mettez un pingouin dans votre ordinateur !(/ | \_|_Seuls ceux qui ne l'utilisent pas en disent du mal. _|_/
