Grub Error 18 Bios
General support questions Post Reply Print view Search Advanced search 5 posts • Page 1 of 1 Stickybit Posts: 4 Joined: 2011/11/18 09:46:46 Grub Error 18 Quote Postby Stickybit » 2013/03/26 18:48:33 Hi guysAm I in trouble? Yes I am. Got a server error 18 selected cylinder exceeds maximum supported by bios centos that has been running for half a year .. and now .. it just will not grub error 18 selected cylinder exceeds maximum supported by bios boot. Grub complains with this error:Error 18: Selected cylinder exceeds maximum supported by BIOSI havn't changed anything with the hardware. The only thing that has changed is regular updating.Could some Grub update be the problem here - and how do I revert if that is the case?Regards Sticky Top TrevorH Forum Moderator Posts: 16858 Joined: 2009/09/24 10:40:56 Location: Brighton, UK Grub Error 18 Quote Postby TrevorH » 2013/03/26 21:27:40 Can you choose a different kernel from the list in the grub menu and boot that instead? Check your BIOS hard drive mapping and make sure the geometry has not changed - maybe your CMOS battery has reset and lost a bunch of settings? Top Stickybit Posts: 4 Joined: 2011/11/18 09:46:46 Re: Grub Error 18 Quote Postby Stickybit » 2013/03/27 05:56:04 Trying to boot the older kernel's produce the same error, while booting the win7 installation on the same disk (which actually is a raid1) works just fine.Could some strange disk error produce this problem? - and is there a way to check the mirror for errors using rescue-mode with a installation media?Regards Sticky Top TrevorH Forum Moderator Posts: 16858 Joined: 2009/09/24 10:40:56 Location: Brighton, UK Re: Grub Error 18 Quote Postby TrevorH » 2013/03/27 09:16:03 I've seen this before on the forums and it has to do with the RAID 1. Can you post your /boot/grub/grub.conf here? Might have to boot from rescue disk to do so.The problem is that grub asks the device for its geometry and the BIOS for the limits from which it can boot and the RAID 1 "disk" returns some bogus geometry with about a million cylinders and it looks to see where the kernel is on there and gives up. Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Post Reply Print view 5 posts • Page 1 of 1 Return to “CentOS 6 - General Support” Jump to CentOS General Purpose CentOS - FAQ & Readme First Announcements CentOS Social User Comments Website Problems CentOS 7 CentOS 7 - General Support CentOS 7 - Software Support CentOS 7 - Hardware Support CentOS 7 - Networking Support CentOS 7 - Security Support CentO
we highly recommend that you visit our Guide for New Members. Solved: grub error 18; Selected cylinder exceeds maximum supported by BIOS Discussion in 'Linux and Unix' started by jrbuergel, Aug 2, 2011. Thread Status: Not open for further replies. Advertisement jrbuergel Jim Thread Starter Joined: Jan 17, 2004 Messages: 772 The internal Linux and XP do boot fine, but all 5 Linux installed on the external sata drive do not boot, but give grub error 18; "Selected cylinder exceeds maximum supported by BIOS", but the partitions do look okay when viewed from either a windows XP Linux file system tool, http://www.centos.org/forums/viewtopic.php?t=3821 or from booted into one of my internal drive Linux and from that newer disk utility, such as in Fedora 13 or 14. After more google searching I did find out that this issue is caused by a limitation in older motherboards BIOS, which my computer is fairly old as a 5-06 Gateway. This limit is that older BIOS will only search for boot files in the first part of the drive. https://forums.techguy.org/threads/solved-grub-error-18-selected-cylinder-exceeds-maximum-supported-by-bios.1010466/ So the solution is either to flash a update into the BIOS, or create a separate boot partition near the beginning of the hard drive. The weird thing is that all my external drive Linux have been booting up just fine for quite some time now. jrbuergel, Aug 2, 2011 #1 Sponsor saikee Joined: Jun 11, 2004 Messages: 3,782 This error has one cure if your 5 Linux are store at the end of a 2TB external hard disk where Grub1 would not be able to access and the cure is to use Grub2. If this isn't your case read on. However Grub1 has a bug and it is quite common to see this error if you use a Grub1 version newer than the one in the internal hard disk which always boots first. It occurs if you pass the PC control from an older Grub1 to a newer Grub1. Although Grub1 has stopped maintenance after the 0.97 version many distros doctored it for their own purpose and their work may not be thorough. You could overcome this problem by using the latest Grub1 in the internal hard disk. If you see Grub prompt with v0.97 it would be the original older version. Those have been doctored show up without a version number d
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://superuser.com/questions/12820/ubuntu-dual-boot-installation-grub-error-18 Learn more about Stack Overflow the company Business Learn more about hiring developers or https://bbs.archlinux.org/viewtopic.php?id=141745 posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted error 18 up and rise to the top Ubuntu dual-boot installation Grub error 18 up vote 3 down vote favorite 2 I'm trying a dual-boot installation of Ubuntu 9.04 parallel to an exisiting Windows XP. On first Ubuntu boot I get a Grub error 18. As I already found out the reason therefore is a unfortunate combination of problems: The Ubuntu partitions are at the end of the partion table grub error 18 probably too far in the back to get found by the old BIOS. I'm installing on a rather old laptop with a BIOS where I can't set the HDD mode (from LBA to CHS or normal). This was mentioned as a workaround to get Grub boot from drives too large for old BIOS (in my case 250GB). One workaround mentioned was to create a boot partition as a first partition on the drive. But as the Ubuntu installer can't move partions, just resize them I can't make any free space that way. Would there be any problem regarding my existing Windows installation if I used another partitioning tool to resize and move my first Windows partition a bit to the back? If doing so would I still be able to reenable the Windows boot manager with fixboot/fixmbr? ubuntu multi-boot grub share|improve this question asked Jul 25 '09 at 13:47 desolat 5551715 add a comment| 2 Answers 2 active oldest votes up vote 6 down vote accepted Creating a new small first primary Ext2 partition for /boot with GParted did the trick. Then ran the Ubuntu Desktop installation and chose manual partioning. There I set /boot as the mountpoint for the small partition and
PhotonX Member From: Munich Registered: 2008-08-10 Posts: 433 [Solved] Grub errors 18 and 22 when booting from SSD Hello community,recently I purchased an SSD drive and am now having trouble doing an Arch install on it. Before that a 2TB HDD was in use. After building in the SSD I partitioned it (msdos partition table) creating partitions for swap, / and /home. Then I copied the files from the old /home partition on the freshly created one and installed Arch on the new / partition. Here's the partition setup:$ LANG=C sudo fdisk -l Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003a234 Device Boot Start End Blocks Id System /dev/sda1 2048 3907028991 1953513472 5 Extended /dev/sda5 16065 4192964 2088450 82 Linux swap / Solaris /dev/sda6 4196352 65720319 30761984 83 Linux # old / /dev/sda7 65722368 577720319 255998976 83 Linux # old /home /dev/sda8 577722368 3907028991 1664653312 83 Linux Disk /dev/sdb: 128.0 GB, 128035676160 bytes 255 heads, 63 sectors/track, 15566 cylinders, total 250069680 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000a9841 Device Boot Start End Blocks Id System /dev/sdb1 51863552 241582079 94859264 83 Linux # new /home /dev/sdb2 241582080 250068991 4243456 82 Linux swap / Solaris /dev/sdb3 2048 51863551 25930752 83 Linux # new / Partition table entries are not in disk orderThe problem is: booting from the SSD fails as follows: On the first try to select some Grub entry I get an error 22 "No such partition.". On any further try I get error 18 "Selected cylinder exceeds maximum supported by bios". What works is to boot up the new system from the Grub residing on the HDD. So the problem is just the new Grub install in the SSD's MBR. Also it's not a thing of Grub's configuration, since copying the working menu.lst from the HDD install and reinstalling grub via grub-install /dev/sdb gives the correct Grub entries but selecting them results in the same errors.So currently I'm booti