By default, in windows 7, it automatically fills in the username of the last logged on user. So all that is required to be entered is the password. I would rather the login screen just show an empty username box and password box. Do the following:
Start -> Search -> secpol.msc
Navigate to Local Policies -> Security Options
Interactive logon: Do not display last user name
Change to Enabled.
Using parted to create partitions on 3TB raid on our new server.
[root@server ~]# parted /dev/sdb GNU Parted 1.8.1 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Model: AMCC 9650SE-8LP DISK (scsi) Disk /dev/sdb: 3000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags (parted) mklabel gpt Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost. Do you want to continue? parted: invalid token: gpt Yes/No? Yes New disk label type? [gpt]? (parted) mkpart primary 0 -0 (parted) print Model: AMCC 9650SE-8LP DISK (scsi) Disk /dev/sdb: 3000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 17.4kB 3000GB 3000GB primary (parted) quit Information: Don't forget to update /etc/fstab, if necessary. [root@server ~]# mkfs.ext3 /dev/sdb1 mke2fs 1.39 (29-May-2006) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 366215168 inodes, 732406263 blocks 36620313 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 22352 block groups 32768 blocks per group, 32768 fragments per group 16384 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544 Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 21 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override. [root@server ~]# tune2fs -c0 -i0 /dev/sdb1 tune2fs 1.39 (29-May-2006) Setting maximal mount count to -1 Setting interval between checks to 0 seconds
We got a couple of new Supermicro Superservers (sys-5026t-tb) that I was planning to set up as dual-boot computers. I installed windows xp fine and did a kickstart install of RHEL5. The installation went fine, but after rebooting, every time I tried to boot to linux I would get this error:
Unable to access resume device (LABEL=SWAP-sdb2) mount: could not find filesystem '/dev/root' setuproot: moving /dev/failed: No such file or directory setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory switchroot: mount failed: No such file or directory Kernel panic - no syncing: Attempted to kill init', -12000
The problem was that, even though it installed the operating system, it did not load the sata drivers. I had this problem before and could just go in and edit /etc/modprobe.conf to alias scsihostadapter ahci from ata-piix. But the problem I was having now, is that the ahci drivers were never installed. I got a file from Supermicro that was supposed to fix this, but I was having a problem installing it when I boot into rescue mode.
I did find out that the reason that it was not installing the driver was due to the presence of the dvd drive that I was using to boot. So, my solution was to take out the dvd drive and boot from a usb flash drive. I did the installation that way and things worked just fine. I could probably reconnect the dvd drive and use it now, but I’ve decided that I really don’t need it, as I install most software from the network.
The package ttfonts-zh_CN has been replaced in RHEL5 with fonts-chinese.
gcc vme7700_blocktransfer_dma.c -lvme -o outputfile
I had some problems installing rhel5-client on a few of our machines. First off, it wouldn’t automatically register with our RHEL Satellite Server. I was given a file bootstrap.sh from the guy running it which solved that problem. Next, it wouldn’t upgrade because some packages kept having depsolving errors. This was solved by removing the following packages:
gcc-gfortran-4.1.2-46.el5.x86_64
gcc-c++-4.1.2-46.el5.x86_64
libstdc++-devel-4.1.2-46.el5.x86_64
After that, things could be upgraded ok.
I just installed a new RHEL5 (x64) system and got an error when trying to run virtuoso.
[ ~/oa]$ virtuoso /net/sw/cad.rh/ic/ic61/tools/dfII/bin/32bit/virtuoso: error while loading shared libraries: libelf.so.1: cannot open shared object file: No such file o r directory
Weird that it was complaining about a 32bit version of something when this is a 64bit os.
It was fixed because I didn’t have libelf installed. I also found that I needed to install libXp. Here’s the log of what I did.
[ ~ ]$ yum install elfutils-libelf
Loaded plugins: rhnplugin, security
Setting up Install Process
Package elfutils-libelf-0.137-3.el5.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package elfutils-libelf.i386 0:0.137-3.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
=========================================================================================================================================================================
Package Arch Version Repository
Size
=========================================================================================================================================================================
Installing:
elfutils-libelf i386 0.137-3.el5 rhel-x86_64-client-5
58 k
Transaction Summary
=========================================================================================================================================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 58 k
Is this ok [y/N]: y
Downloading Packages:
elfutils-libelf-0.137-3.el5.i386.rpm | 58 kB 0
0:00
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : elfutils-libelf
1/1
Installed:
elfutils-libelf.i386 0:0.137-3.el5
Complete!
[ ~ ]$ virtuoso
/net/sw/cad.rh/ic/ic61/tools/dfII/bin/32bit/virtuoso: error while loading shared libraries: libXp.so.6: cannot open shared object file: No such file or directory
[ ~ ]$ yum install libXp
Loaded plugins: rhnplugin, security
Setting up Install Process
Package libXp-1.0.0-8.1.el5.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package libXp.i386 0:1.0.0-8.1.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
=========================================================================================================================================================================
Package Arch Version Repository
Size
=========================================================================================================================================================================
Installing:
libXp i386 1.0.0-8.1.el5 rhel-x86_64-client-5
22 k
Transaction Summary
=========================================================================================================================================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 22 k
Is this ok [y/N]: y
Downloading Packages:
libXp-1.0.0-8.1.el5.i386.rpm | 22 kB 0
0:00
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : libXp
1/1
Installed:
libXp.i386 0:1.0.0-8.1.el5
Complete!
[ ~ ]$ virtuoso
Things started just fine.
Edit /etc/sysconfig/rhn/sources and add the following:
### Dag RPM Repository for Red Hat Enterprise Linux yum dag http://apt.sw.be/redhat/el4/en/$ARCH/dag
Now can get perl modules here instead of from cpan (which causes me a lot of problems for some reason).
[root@server ~]$ up2date perl-IO-Socket-SSL
Had a weird problem come up today. I reboot one of our systems and it would not come up. Actually, it apparently was working, just ridiculously slowly. I thought it had hung at the Starting udev line, but letting it run for an hour, got it a few lines further down. Nonetheless, something was definitely wrong. I tried my usual ideas of adding apm=off acpi=off noapci noapmd, but that didn’t help. It seemed like the disk was bad, but not with the usual messages that I would get.
I brought out a RHEL installation disk and boot into rescue mode. I did get an error about it not being able to find all of the current linux installations. I then went into the bios and found that this computer was set up to have its sata disks act like ide ones. I’m pretty sure that I did this when I originally installed because it wouldn’t recognize the drives as ahci. However, I’m also sure that they should be ahci, which is newer, instead of acting like the old ide. So I changed this to ahci, even though I was sure this was going to cause more problems. (I was right about the last part.)
I then again, did a linux rescue. For some reason, I no longer got the error about not finding all my linux installations. I could run chroot /mnt/sysimage to get my installation mounted properly. Then, I copied /etc/modules.conf to /etc/modules.conf.SAVE. I knew that I needed to change the modules that were loaded to reflect ahci drives instead of ide ones. So I edited this line:
alias scsi_hostadapter1 ata_piix
to
alias scsi_hostadapter1 ahci
This would work for after the kernel is loaded, but I needed to make sure the ahci module was loaded at boot. For this, I needed to make a new initrd image. I used the following:
mkinitrc --preload=ahci \\ /boot/initrd-2.6.9-89.0.3.ELhugemem.mary.img \\ 2.6.9-89.0.3.ELhugemem
Then, I edited /etc/grub.conf to take this initrd file instead of the one it had. And lastly, to make sure it was using the proper disk. For some reason, my disk devices would change from /dev/sda and /dev/sdb to /dev/sdb and /dev/sdc. Instead of putting the device names in /etc/grub.conf, I used the labels.
kernel /vmlinuz-2.6.9-89.0.3.ELhugemem ro root=/dev/sda3 rhgb quiet
I also used the labels in /etc/fstab.
LABEL=/1 / ext3 defaults 1 1 LABEL=/boot /boot ext3 defaults 1 2
After I reboot and everything worked, I renamed the initrd file without the mary bit, thus overwriting the original.
One thing I was worried about was whether I would have to do this each time I updated the kernel. Fortunately, there was a kernel update ready, so I installed it. The initrd file that came in worked perfectly. I didn’t have to do anything special.
I had to reinstall a computer with XP. It would boot off the cd ok, but then after the “Setup is inspecting your computer’s hardware configuration” message came up, it wouldn’t do anything. It was just a blank screen. I ran memtest to check the memory and it all came up clean. I did notice that the light for hard drive activity would be constantly lit when the screen was blank. However, I had no problem at all in installing linux on this computer. So, I used a live cd of Damn Small Linux (DSL) to boot. Then I ran the following command:
# sudo fdisk /dev/hda The number of cylinders for this disk is set to 9729. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Command (m for help): o Building a new DOS disklabel. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. Command (m for help): w
After this, the windows installation worked fine.